BRAUN布朗说明书

Post Office Box 29, Mount Holly, N.C. 28120 USA Phone (704) 822-2993 Fax (704) 822-1292E-mail: BRAUNINST @ https://www.360docs.net/doc/846118870.html,

Post O Ph E-ffice Box 1106, D71301 Waiblingen

one (+49) 07151/956230 Fax (+49) 07151/956250 mail: info @ braun-tacho.de ernet: www.braun-tacho.de

Int

Manual

E16A323 (with RS232-Interface, Board Mounting) E16E323 (with RS232-Interface, 19" Rack)

E16A324 (with Profibus-Interface, Board Mounting) E16E324 (with Profibus-Interface, 19" Rack)

Turbine Overspeed Protection System

with SIL3/IEC61508 Approval

Generator E1696.31 Monitor E1655.41Monitor E1655.41 Monitor E1655.41

Note: Shown is model E16E323

Contents page Characteristics (3)

Function

Structure (3)

System

Speed Sensors (3)

Electronics (3)

System

Monitor E1655 (4)

Test Generator E1696 (4)

Alarms provided by the system (4)

Alarms (4)

Trip

Overspeed

Warning Alarms (4)

Channel

System Failure Alarms (4)

Modules (5)

E1655

Overspeed Setpoint (SP1) (5)

Sensor Failure Monitor (5)

Sensor Pulse Train Comparison (5)

Low Speed Check (SP2) (5)

External Trip Input (6)

Input (6)

Signal

Sensor

Sensor Signal Repeater (6)

Testing (7)

E1696 Generator (7)

Automatic test routine (7)

function (8)

Watchdog

Failure signals (8)

Display and Keys of E1696 (9)

Error-Messages of E1696 (10)

Display and Keys of E1655 (11)

Error-Messages of E1655 (11)

Programming of the modules (12)

parameters (12)

to

Access

Listing of E1655 (13)

Parameter

Parameters of E1655 (14)

Listing of E1696 (19)

Parameter

Parameters of E1696 (19)

Function Diagram (24)

Diagram (25)

Wiring

Rear View of 19"Rack (E-Version) (26)

Electrical

Specifications (27)

Dimensions of E-Version (19" Rack) (28)

A-Version (Board Mounting) (30)

Dimensions

of

Summary of Versions and Spare Part Recommendation (31)

Function Characteristics

Turbine Speed Monitoring against overspeed with redundancy by 3 independent channels with trip relay outputs 1 each per channel.

Function Test Facility with discrete selection by external signals, or automatic test routine with watchdog and system failure warning. 3 channel structure with independent monitoring modules

options for externally controlled test or automatic test routine

Each channel has its own comprehensive measurement and alarm section,

realized by a Monitor Module in each channel. Measurement is based on the

fast responding digital pulse interval principle with automatic floating number

of periods. Inputs include sensor monitoring. Each of the three Monitor

Modules ends up to an alarm outputs (breaking overspeed trip circuit). Any

failure of sensor or measuring function detected also sets the trip output of the

monitor to overspeed position. Further, each channel releases its own failure

warning signal, free available to the periphery as N/O contact.

The overall response to an overspeed condition is shorter than 15 millisec

(plus 1 pulse interval of the input pulse train).

fast response to overspeed

Each module within the system has its own data port at the front, usable for

the configuration of the module, and also for data calling. Available as RS232

(standard) or as PROFIBUS DP Interface.

Data interface facility

System Structure

(see also function diagram)

Speed Sensors

3 Hall-Effect based speed sensors series A5S... are placed at the turbine shaft

for a non-contact sensing of its rotational speed. Milled slots in the shaft, or a

pole wheel, form a profile to generate a pulse frequency corresponding to the

speed. The sensors have an incorporated signal amplifier providing an

adequate signal level for the transmission to the E16 Electronics.

Non-contact speed sensing

System Electronics

The E16 Electronics includes 3 Monitor Modules E1655, one each for each channel A, B, C. Further, 1 Test Generator Module E1696.

They are plugged into a card file, which is ready wired to perform the monitoring function. Terminal strips connect to the periphery. The System and its Modules

Monitor E1655

This module provides:

Sensor circuit monitoring and sensor signal lead monitoring, sensors pulse train comparison.

Sensor signal repeating output.

Digital speed measurement with display in RPM terms.

Overspeed trip setpoint (SP1) 2 alarm signal outputs,

also offering the facility of an external alarm control.

Low end setpoint (SP2) to perform the plausibility check,

with starter facility.

“channel warning alarm” relay output

"sensor failure alarm" relay output.

All functions are digital, with 5 digits resolution and accuracy of

+ 0.01% + 1 in the last digit.

Parameters are programmable from the front keys (with access lock), or via data interface.Functions included into the Monitor module E1655. Detailed description on following pages

Test Generator E1696

This module provides:

Adjustable frequency generator to substitute the sensor signal under test condition, with display in RPM terms.

Channel test selection by external control, or automatic test cycle with “System Failure” outputs. Functions included into the Test Module E1696

Detailed Description on following pages

Alarms provided by the System Overspeed Trip Alarms

The trip alarm of the monitor module E1655 within each channel will be released under one or more of these conditions:

1.overspeed setpoint (SP1) exceeded,

2.sensor failure detected (supply and signal lead monitor),

3.sensor signal voltage failure detected (only at zero speed)

4.sensor pulse train discrepancy detected,

5.low end setpoint (SP2) not exceeded after starter phase,

6.external alarm control actuated

7.self test failure conditions for channel trip alarm

Channel warning alarm

This signal contact, available from each channel to the periphery, breaks under one or more of these conditions:

1.overspeed setpoint (SP1) exceeded (if programmed).

2.external trip control actuated,

3.low end setpoint (SP2) not exceeded after starter phase

4.sensor pulse train discrepancy detected

5.self test failure of a neighbor channel. conditions for channel warning alarm

Sensor failure alarm

This signal contact, available from each channel to the periphery, breaks under one or more of these conditions:

1.sensor failure detected (supply and signal lead monitor),

2.sensor signal level failure detected. conditions for sensor failure alarm

System Failure warnings

The System Failure Alarms 1 and 2 , available as (N/O) contact will be signalized if one of the channels does not duly respond to the test procedure. see section Automatic Test Cycle for details of System failure warnings

The E1655 Modules

Alarms and Checks performed

Overspeed Setpoint (SP1)

The overspeed setpoint SP1 can be programmed to any speed level, in terms of RPM. Its setting can be called to display. Further programmable are the hysteresis width, and the event memory. If not memorized, the signal returns to “no excess” with the measurement decreasing below setpoint (minus hysteresis), otherwise it must be cancelled by an external acknowledge signal.

details of the overspeed alarm (SP1)

Sensor Failure Monitor

This function includes 2 sections, the sensor supply monitor and the sensor signal lead monitor. Both have certain preconditions, as explained below. They are met by all BRAUN sensors of series A5S... with push/pull output stage, possibly not by others. Check the sensor data sheet for validity. If not applicable, disengage the function.

The supply monitor checks the current drain, and the voltage of the sensor supply lead. Thereby it detects a break as well as a short circuit in the sensor connection. Obviously, this requires a sensor with adequate power consumption (>7ma).

The sensor signal lead monitor checks the level of this input to be either definitely on high or on low level, as a push/pull output is, if not broken. As primarily intended to monitor the signal lead in standstill state, the function automatically disengages when the sensor supplies a signal frequency. A failure thus detected will be memorized or not, as programmed.

Sensor Failure Monitor Sensor Pulse Train Comparison

This function checks for proper sensor signals during run of the machine. Each monitor Module E1655 compares the pulse train delivered from its own sensor to those of its both neighbor channels. If they differ, the monitor finds its own sensor to be faulty. This checks performs at any frequency, and does not depend on a speed measurement.

Active sensor signal check

Low Speed Check (SP2)

If the speed measurement drops below the (programmable) setpoint SP2 of the Monitor Module during operation, from whatever reason, a failure will be signalized. A very comprehensive check, including sensor and measurement function.

The level SP2 will be set at the low speed end, to 30 % for instance. For start-up, it will be overrun by the starter function of the E1655 module, activated by an auxiliary contact from the machine control, and held for a programmable period of time (0...999 sec) after its end.

This alarm is programmable to be memorized or not, or to be disengaged.

Low speed alarm checks for full performance

Display

The numerical display of the E1655 module serves as a programming aid (if not programmed by the data interface), indicating the program group number, the step number, and the parameter addressed.

When not in the programming phase, the display reads the actually measured speed, in terms of RPM or any other desired unit (also during the test phase). By pushbuttons, the setpoints SP1 and SP2 can be called (but not modified that way).

By red and green LEDs, the module indicates its alarm conditions for SP1 and SP2.

External Trip Input

In addition to the alarm and failure conditions as described before, the trip alarm may also be released by an external binary signal. This feature allows to include a condition from outside the speed monitor into the trip release, maybe a temperature signal, or a pressure contact. The high/low level for the response of this control input is adjustable. Trip release by external signal

Sensor Signal Input

The input accepts and feeds preferably 3-leads sensors, as BRAUN sensor

series A5S.. with p/p output. Others may give restrictions, in frequency range,

transmission distance, and the safety checks that can be performed.

By a control signal from the Test Generator Module, the monitor input is

switched to a second input, which receives the test frequency as emitted from

the Test Generator.

Sensor signal input

Sensor Signal Repeater

This isolated output repeats the signal as received from the sensor to the periphery. Feeds for instance a speed controller, or external display. The output is firmly tied to the sensor signal of the specific channel, not affected when the monitor is switched to the test frequency. Isolated sensor signal repetition

Testing with E1696 Test Generator Module Externally controlled test procedure

The E1696 provides a test frequency to be switched to the channels A, B, C of the system, one after the other, by means of external (DC) control signals. This frequency can be set (in terms of RPM) at the test generator, and then tuned up and down by pushbutton. The front display reads the actual frequency.

3 control inputs to the system are assigned to the 3 channels A,B,C. The one input held high switches its channel to test, substituting the sensor signal by the frequency of the test generator. Note: the repeater output of the module remains with the sensor input, not affected by the test procedure. The control inputs are locked against each other, to prevent of inadvertently switching 2 or 3 channel to test at the same time (this protection can be disengaged by program).

The channel under test reads the test frequency as received and measured at its numerical display (by RPM). If it exceeds its setpoint, it will signalize o-verspeed by its alarm relay and LED display.

A contact set of an external voter must signalize the correct response to the test generator. externally controlled test procedure

system reaction to externally controlled test

Automatic Test Routine

The Test Module repeats the automatic test routine with an adjustable time interval (1 ... 9 999 min).

The test routine itself is performed in three steps. With each step, the three monitors are tested subsequently.

Step one:

Simulated test speed 1 (n >SP1, feedback of tested channel must be trip), Step two:

Simulated test speed 2 (n

Forced trip (n

During step three, the monitor receives test speed 2.

If measurement and alarming serve duly, the Monitor Module under test must release its trip alarm with step 1 at simulated test speed 1, but must not with step 2 at simulated test speed 2.

With step 3 the forced trip input of the monitor is tested. At step 3 each monitor is switched to simulated test speed 2 (below overspeed) but the tested channel must feed back the trip signal.

The Test Module checks for a corresponding response. It is returned from a contact set of an external device (magnetic valve).

With an incorrect response from a channel, the routine immediately interrupts (to prevent the entire system of an unfounded overspeed trip alarm to the machine) and a system failure signal is released.

The Test Module throws the faulty channel into its overspeed condition (by means of the forced trip input). Thus, the overspeed safety is maintained – the system now responds with a 1 of 2 characteristics, in other words, if just one other channel detects overspeed or an internal fault, the turbine will be shut down. regularly performed automatic test routine: checking the response of all channels to 2 test frequencies safety maintained after failure in one channel

Watchdog Function

The watchdog section on the E1696 module performs an identical test step sequence, independent from the above but in close synchronism. If both, test routine and watchdog are not at the same step at the same moment, system failure is signalized. But more, the above mentioned measure of forcing a faulty channel to its overspeed condition also requires the said coincidence between routine cycle and watch dog. In other words, the measure is taken only if the stepping sequence up to this moment was correct. This prevents the system from an unfounded overspeed alarming, and thus further increases the reliability, and the availability of the machine.

Incorrect stepping however generates a warning, by the System Failure alarm output, which should immediately be observed. watchdog checks for correct stepping sequence

and crosschecks trip signals

Failure signals to the periphery

The Test Generator Module E1696 provides failure signals (1) and (2), as N/O relay contacts, de-energized to announce a failure, also with power supply missing.

Both respond to an alarm from one or more of the channels A, B, C, and to a failure detected in the testing sequence, or to an incorrect performance of one of the Monitor Modules during test. system failure signals from test and watchdog section

Display and Keys of E1696

During auto test sequence

Generator E1696

LED2: flashing = channel B is tested

On = channel B signalizes trip

LED3: flashing = channel C is tested

channel C signalizes trip

LED4: On = Auto-Test-Mode active

Off = Manual-Test-Mode active

In normal operation the display reads:

With key the value of test speed 1,

with key the value of test speed 2.

With keys and depressed : the remaining time (XXXX.X minutes) until the next auto test sequence is started Start of an auto test sequence

An auto test sequence can be manually started by depressing keys and .

Reset of latched alarms with key .

Display (error) messages refer to next page.

Error-messages of test generator E1696

During normal operation:

C0-E1 : channel A signalizes trip, B and C not

C0-E2 : channel B signalizes trip, A and C not

C0-E3 : channel A and B signalize trip, C not

C0-E4 : channel C signalizes trip, A and B not

C0-E5 : channel A and C signalize trip, B not

C0-E6 : channel B and C signalize trip, A not

During an auto-test-sequence:

C1-E1 : incorrect feedback of channel A at simulated test speed 1 C2-E1 : incorrect feedback of channel B at simulated test speed 1 C3-E1 : incorrect feedback of channel C at simulated test speed 1 C1-E2 : incorrect feedback of channel A at simulated test speed 2 C2-E2 : incorrect feedback of channel B at simulated test speed 2 C3-E2 : incorrect feedback of channel C at simulated test speed 2 C1-E3 : incorrect feedback of channel A at test of forced trip

C2-E3 : incorrect feedback of channel B at test of forced trip

C3-E3 : incorrect feedback of channel C at test of forced trip

C9-E1 : channel A not ready for test

C9-E2 : channel B not ready for test

C9-E3 : channel A and B not ready for test

C9-E4 : channel C not ready for test

C9-E5 : channel A and C not ready for test

C9-E6 : channel B and C not ready for test

C9-E7 : channel A, B and C not ready for test Error-Messages from E1696 (C = Check, E = Error)

Other display-messages

FC-1 : test of forced trip

SELF : E1696 performs a self test routine (subsequent to each auto test

sequence)

FC = Function Check

Display and keys of E1655

Monitor E1655

In normal operation the display reads

With key the value of SP1,

with key the value of SP2.

Error messages

(SE = Selftest-Error, CE = Check-Error)

SE-01: sensor supply failure or sensor lead failure,

SE-02: pulse train difference,

SE-03: SE-01 and SE-02 simultaneously,

SE-04: low end failure,

SE-05: SE-01 and SE-04 simultaneously,

SE-06: SE-02 and SE-04 simultaneously,

SE-07: SE-01, SE-02 and SE-04 simultaneously.

SE-10 : test speed of generator = zero (= failure of test generator)

or

test time exceeds 10 minutes (= failure of test generator)

or

neighbour

channel

signalizes permanent self test (= failure of neighbor channel)

SE-20 : neighbour channel fails to produce self test within 5 hours time of operation (= failure of neighbor channel) CE-1 : monitor switched to forced trip by E1696

Reset of latched alarms with keys and .

Other display-messages :

(FC = Function Check)

FC-1 : test of forced trip by E1696

FC-2 : external trip control actuated

SELF : self test of monitor (periodically repeated after each 2 hours)

Programming of the modules

Access to parameters

Principle: Select a Parameter by it's "Name" Pgg.ss,

where gg = Parameter- Group-No. and

ss = Step-No. within Group,

then verify the value and change it according the application Programming:

To enter the programming phase, press both keys and simultaneously; instead

of normal display, P00.00 will be shown.

Select group- or. step-no. with keys , .

Toggle between group- and step-range with key .

Show parameter's value with key .

Select (move ) active digit with key .

Adjust figure in active digit with keys , .

Acknowledge with key , Cancel (old value still valid) with key .

Return to normal operation with key

Example: change value of parameter P01.01 from 2386 to 2387 or 2385:

Enter = new, changed value is valid

Parameter listing of Monitors E1655:

Summary of programming steps and their initial parameters (default values) as set on delivery

program- data set on delivery Step No. parameter function (initial data)

P00 .00 access code request 0000 .01 new code figure 0000

.02 lock status (1 = unlocked, 0 = locked) 1 = unlocked

P01 .00 input: scaling decimals of input signal frequency 0 = none .01 value of nominal input frequency (Hz) 10000

.02 decimals of corresponding speed 0 = none

.03 corresponding speed (unit as desired) 10000

.04 low end of speed range 00001

P02 .00 zeroed LSDs in display 0 = none .01 display updating sequence (X.X sec) 0.3 (sec)

.02 time elapse of starter phase (XXX sec) 000 (sec)

.03 truth-level of external trip signal (0 = low, 1 = high) 1 = high

.04 sensor monitoring (0=off,1=on,2=on,latched) 1 = on

.05 mode of sensor monitoring (0=none,1=current,2=voltage,3=both) 1 = current

.06 lowspeed monitoring (0=off,1=on,2=on,latched) 1 = on

.07 sensor signal deviation monitoring (0=off,1=on) 0 = off

.08 reset interval of deviation counters (1....9999 pulses) 1000

.09 allowable deviation between counters (0...99 pulses) 50

.10 limit of error counter (1...99 deviation detections) 5

.11 warning alarm at overspeed (0=no,1=yes,2=yes and at test overspeed) 1 = yes

P03 .00 setpoint (SP1) in unit as programmed for display 10000 .01 hysteresis bandwidth SP1 (XX.X % of SP1) 05.0 (%)

.02 alarm to be latched (0=no, 1=yes) 0 = no

P04 .00 setpoint (SP2) in unit as programmed for display 00100 .01 hysteresis bandwidth SP2 (XX.X % of SP2) 05.0 (%)

.02 alarm to be latched (0=no, 1=yes) 0 = no

P05 .00 hardware address added to device address (0=no,1=yes) 0 = no .01 device address (range 1...125) 001

Parameter Group P00.xx of E1655:

Data Access, Password

Key figure to access

Programming access to all parameters can be locked by a password number.

If not properly served, the parameters may be called to display but not varied. If not properly served, the display reads -E1-,and any programming in a later program step will be rejected.

Note:

If the knowledge of the password number went lost it may be recalled to display by a procedure, as described in a separate sheet K0-095 (not included into these instructions). The code figure then appears by 4 digits.

In a subsequent program step, a new code may be established, substituting the one previously valid.

The key function may be disengaged by a next program step. With authorized access, set parameter to 1 in step No .02, to generally unlock the key. This may prove practical during the installation phase to facilitate the adjustments. Once installed, the key function should be reactivated, by programming parameter 0 in this step. Step P00.00:

Code figure to access Step P00.01:

new code figure Step P00.02: unlock access key

Parameter Group P01.xx of E1655: Measurement Configuration, Scaling I nput

Scaling defines the relation between the input signal frequency (in terms of Hz), and the corresponding display (in terms of RPM). Both values are freely programmable by their decimals and numerical amount. Of course, they must refer to the same operation level. This reference point is recommended close to the high end of the intended operation range. In later operation however, it may be overrun without error.

Scaling Example

The speed is measured by a contactless probe scanning a gear wheel on the turbine shaft with 90 teeth.

Thus, a speed of 3000 rpm results in a signal frequency of 3000x90:60 (Hz) = 4500 (Hz). With this as the reference level, the following parameters are to be set:

Step P01.00 parameter 0 (= no decimals)

P01.01 parameter 04500

P01.02 parameter 0 (= no decimals)

P01.03 parameter 03000 scaling input

signal frequency (Hz):

Step P01.00 =

number of decimals,

Step P01.01= value. corresponding value of rpm: Step P01.02 =

number of decimals,

Step P01.03 = value

Low end for shut-off

If the speed falls lower than this level, the measurement will be cancelled to zero.

The low end is programmed by the same terms, as defined for the speed by steps P01.02 and P01.03. Step P01.04 low end of operating range

Parameter Group P02.xx of E1655: Display, Starter time, Failure Monitoring LSDs on zero

If the display of the speed uses 4 or more digits, for application reasons, the lesser significant digits (LSD) may appear fluctuating. To avoid irritations by not significant digits, a number of them may be permanently kept at zero. Set the parameter to the number of LSDs to be kept on zero. Step P02.00: zeroing LSDs

Display updating sequence

Independent from the response time used for other functions, the display may have its own up-dating sequence - again in the interest of stabilized and well legible readings. Set the parameter to the time in steps of 0.1 sec.

A recommended value is 0.3 sec. Step P02.01: display updating

Starter time period

This step sets the starter time period (elapse). Starter phase state for SP2 lasts from the beginning of the external starter signal plus the programmed time elapse following its end. Range 000...999 sec. Step

P02.02:

starter time elapse

Truth level of External Trip Signal

To match the control source, and specific safety aspects, the parameter of this step defines either high or low signal level to make the condition true. Step

P02.03:

Truth level of

External Trip Signal

parameter

0 : high = control true

1 : low = control true

Enable/Disable of sensor failure detection

Sensors without power supply (for example inductive sensors) cannot be monitored against failure.

If the sensor is monitored, it is possible to latch a failure alarm until it is reset. Step

P02.04:

Monitoring of sensor

parameter

0 : off

1 : on, alarm not latched

2 : on, alarm latched

Mode of sensor monitoring

The sensor can be monitored versus current drain (alarm if current drops below 7 mamps or exceeds 150 mamps) and/or signal voltage level during zerospeed of the turbine.

Note:

Signal voltage level monitoring only possible with BRAUN sensors with incorporated push/pull output (series A5S...). Step

P02.05:

Mode of sensor monitoring

parameter

0 : no monitoring

1 : current monitoring

2 : voltage monitoring

3 : current and voltage

Lowspeed monitoring (n < SP2)

The lowspeed monitoring can be switched off. If the lowspeed monitoring is enabled, the speed of the turbine must exceed SP2 (after starter time has elapsed). Step

P02.06:

lowspeed monitoring

parameter

0 : off

1 : on, alarm not latched

2 : on, alarm latched

Sensor Pulse Train Comparison

Purpose of this function:

?Detection of a faulty position of the sensor (cleareance to big or wrong angular position) during starter phase of the turbine (nSP2).

Function principle:

The pulses of all three sensors are counted in each monitor. The main sensor of the monitor is detected as faulty if the main counter deviates from both neighbour counters. The allowable deviation between the counters is adjustable.

The counters are periodically reset after an adjustable number of pulses or if a fault is detected.

Subsequent counter evaluations that indicate a faulty sensor increase an error counter. This counter is reset by an evaluation that indicates a proper working sensor. If the error counter exceeds an adjustable limit, the alarm is released.

Programming steps for deviation monitoring:

Step P02.07 : monitoring on/off

Step P02.08 : number of pulses for periodically reset of counters

(range from 1 to 9999 pulses)

Step P02.09 : allowable deviation between counters (range 1 to 99 pulses) Step P02.10 : limit of error counter

(range from 1 to 99)

Example:

P02.07 set to 1 (monitoring on)

P02.08 set to 1000 (counters will be reset after 1000 pulses, of any sensor)

P02.09 set to 50 (allowable deviation of 50 pulses within 1000 pulses)

P02.10 set to 5 (5 subsequent error detections until alarm is released)

With above settings a non operational main sensor will be detected after 250 pulses of the other two sensors (5 error detections after 50 pulses). Step

P02.07:

sensor pulse train comparison

on/off

parameter

0 : off

1 : on

Step P02.08:

number of pulses for reset of

pulse counters

range 0001 to 9999 pulses

Step P02.09:

allowable deviation between

counters until error counter is

increased

range 01 to 99 pulses

Step P02.10:

limit of error counter until alarm

is released

range 01 to 99

Warning alarm at overspeed condition

It can be programmed whether the warning alarm will be released at a real overspeed condition or additionally at a test overspeed condition. Step

P02.11:

warning alarm at overspeed

parameter

0 : no

1 : yes, only at real overspeed

2 : yes, at real and test over-

speed

Program Range P03.xx of E1655: Defining the Overspeed Alarm SP1

Overspeed setpoint

The setpoint SP1 is programmed in the same terms (rpm) as selected for the display of the speed (in step P01.03).

Alarm Hysteresis

The hysteresis is the margin between condition "excess" (>) and "no excess" (<), defined by its bandwidth.. The hysteresis bandwidth is set as a percentage of the setpoint. Setting in step P03.01.

The position of the hysteresis is firm at below the setpoint.

Example:

At a setpoint of 10000 rpm and a hysteresis of 5%, an overspeed alarm is released at a speed exceeding 10000 rpm and is reset at a speed less than 9500 rpm.

Overspeed alarm latched

An overspeed alarm can be latched Step

P03.00:

overspeed setpoint

Step P03.01:

band width of hysteresis of SP1

Step P03.02:

overspeed alarm latched

parameter

0 : no

1 : yes

Program Range P04.xx of E1655: Defining the Lowspeed Alarm SP2

Lowspeed setpoint

The setpoint SP2 is programmed in the same terms (rpm) as selected for the display of the speed (in step P01.03).

Alarm Hysteresis

The hysteresis is the margin between condition "excess" (>) and "no excess" (<), defined by its bandwidth.. The hysteresis bandwidth is set as a percentage of the setpoint. Setting in step P04.01.

The position of the hysteresis is firm above the setpoint.

Example:

At a setpoint of 100 rpm and a hysteresis of 5%, a lowspeed alarm is released at a speed of less than 100 rpm (not in starter state) and is reset at speed exceeding 105 rpm

Lowspeed alarm latched

A lowspeed alarm can be latched Step

P04.00:

lowspeed setpoint

Step P04.01:

band width of hysteresis of SP2

Step P04.02:

lowspeed alarm latched

parameter

0 : no

1 : yes

Parameter Group P05.xx of E1655:

Defining Data Interface Parameters (only relevant for PROFIBUS) Further details of Profibus-Interface see instructions I E16Pro1e.

Slot position address added/not added to device address

Each slot for the monitors has a hardware wired address adder on the backplane:

L09 (monitor channel A) : address 1

L17 (monitor channel B) : address 2

L25 (monitor channel C) : address 3

It is programmable that the programmed address in step P05.01 automatically increases by this channel specific adder No.

Thus, the entire system with all monitors and the testgenerator of one rack (including the spare parts) can be set to the same basic address.

Example:

P05.01 system address set to 92

Test generator has address 92

Monitor channel A (slot L09) has address 93

Monitor channel B (slot L17) has address 94

Monitor channel C (slot L25) has address 95

For the operation of the Profibus-Interface each device must have an address, range from 001 to 125. The address is set in step P05.01. Step P05.00:

hardware address added to P05.01

parameter

0 : no

1 : yes

step P05.01:

device No

Parameter listing of Test Generator E1696:

Summary of programming steps and their initial parameters as set on delivery

program- data set on

delivery

Step No. parameter function (initial data)

P00 .00 access code request 0000

.01 new code figure 0000

.02 lock status (1 = unlocked, 0 = locked) 1 = unlocked

P01 .00 scaling: decimals of signal frequency 0 = none

.01 value of nominal signal frequency (Hz) 10000

.02 decimals of corresponding variable 0 = none

.03 corresponding speed (RPM) 10000

P02 .00 simultaneous test of two channels possible (0=yes,1=no) 0 = yes

.01 automatic resume of auto-test after sensor failure alarm (0=no,1=yes) 0 = no

.02 repeating time period of auto-test-sequence (1...9999minutes) 10

.03 test mode (0 = automatic, 1= external) 0 = automatic

.04 simulated test speed 1 (RPM) 11000

.05 simulated test speed 2 (RPM) 09000

P03 .00 device No (for Profibus-Interface) 001 Parameter Group P00.xx of E1696:

Data Access, Password (identical to Monitors E1655)

Key figure to access

Programming access to all parameters can be locked by a password number.

If not properly served, the parameters may be called to display but not varied. If not properly served, the display reads -E1-,and any programming in a later program step will be rejected.

Note:

If the knowledge of the password number went lost it may be recalled to display by a procedure, as described in a separate sheet K0-095 (not included into these instructions). The code figure then appears by 4 digits.

In a subsequent program step, a new code may be established, substituting the one previously valid.

The key function may be disengaged by a next program step. With authorized access, set parameter to 1 in step No .02, to generally unlock the key. This may prove practical during the installation phase to facilitate the adjustments. Once installed, the key function should be reactivated, by programming parameter 0 in this step. Step P00.00:

Code figure to access Step P00.01:

new code figure Step P00.02: unlock access key

Group P01.xx of E1696:

Scaling the Generator

Scaling defines the relation between the signal frequency (in terms of Hz),

and the corresponding display (in terms of rpm). The values for the steps P01.00 through P01.03 have to be set identical to the steps P01.00 through P01.03 of modules E1655.

Example:

A signal frequency of 4500 Hz corresponds to a speed of 3000 RPM. Program as follows:

in step P01.00 parameter 0

in step P01.01 parameter 04500

in step P01.02 parameter 0

in step P01.03 parameter 03000 Step P01.00:

Decimals for input frequency Step P01.01.

Signal frequency at reference Step P01.02:

decimals for display

Step P01.03:

speed value at reference

Group P02.xx of E1696: Adjustments for test mode

Protection against inadvertent overspeed trip during manual test phase If two or three channels are switched to test simultanously, the system will release an overspeed trip alarm. As a protection against an inadvertent release the channels can be locked against each other. If the lock is enabled, it is not possible to switch more than one channel to test at the same time. If two or three channels are selected at the same time, no test occurs at all. Setting in step P02.00:

Parameter 0 : simultanous test of two channels possible (overspeed trip) Parameter 1 : simultanous test not possible Step P02.00:

Protection against inadvertent overspeed trip during manual test phase

Automatic resume of auto-test after failure alarm of monitor

If an monitor alarm occurs, the auto-test is inhibited and the system failure alarms 1 and 2 are released. With parameter 0 in step P02.01 the system failure alarm must be externally canceled, with parameter 1 it resets automatically (as soon as the monitor alarm is no longer present) and the auto- test performance is resumed. Step

P02.01:

Automatic resume of auto-test

0 = no

1 = yes

Time repeating period inbetween auto-test –sequences The time is adjustable from 1 to 9999 minutes. Step P02.02:

Time repeating period

inbetween auto-test-sequences

Range 1 to 9999 minutes

Manual external or automatic test mode

On manual test mode the channels are selected to test by an external control signal. The simulated test speed is adjustable at the generator by the front keys.

On auto test mode the programmed simulated test speed 1 and simulated test speed 2 are active. Step

P02.03:

Manual or automatic test mode

Parameter

0 : automatic test mode

1 : manual external test mode

Simulated test speed 1 and simulated test speed 2

Simulated test speed 1 must be set to a value above the trip setpoint (SP1 of E1655), simulated test speed 2 must be set to a value below the trip setpoint SP1.

Example:

SP1 of E1655 is set to 3300 RPM

Simulated test speed 1 is set to 3350 RPM,

Simulated test speed 2 is set to 3250 RPM. Step

P02.04:

Simulated test speed 1

Step P02.05:

Simulated test speed 2