艾默生DCS系统Deltav培训课程7009-6

Course 7009 - Rev 5 - 8/15/02
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6-2
Objectives
Upon completion of this module you will be able to Determine DST license requirements Define a Regulatory Control module using the PID_LOOP template Define modes and fields
6-11
Regulatory Control Module FIC-102
FIC-102
0-100 GPM
FT-2 PV
SP
Gain = .5 Reset = 3 Rate= 0
P I Reverse Act
CTLR
FY-2 Increase to Open
AI AO
FT-2
FY-2
=
=
EMERSON Process Management – Educational Services
Permitted — List of valid mode choices.
EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
EMERSON Process Management – Educational Services
Note: DSTs can be substituted for less functional DSTs. Example, an Analog Output DST License could be used for an Analog Input DST.
EMERSON Process Management – Educational Services
IMAN = MAN = CAS = AUTO = OOS = RCAS = ROUT = LO =
2.0 8.0 48.0 (Target); 32.0 (Actual) 16.0 1.0 80.0 144.0 4.0
EMERSON Process Management – Educational Services
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6-9
Modes
Remote Cascade (RCAS) — Similar to Cascade except that the setpoint is supplied by an external control program through the RCAS_IN parameter.
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
6-12
Workshop - Creating a Regulatory Loop
This workshop requires you to perform the following tasks: Task 1. Record DST usage prior to configuring FIC-102. Task 2. Configure the regulatory loop FIC-102 using the PID_LOOP module template. Task 3. Display loop parameters using Datalinks. Task 4. Display PipesAnim Dynamos. Task 5. Record DST usage after configuring FIC-102.
DeltaV Regulatory Control
TM
EMERSON Process Management Educational Services
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EMERSON Process Management – Educational Services
EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
6-5
Loading Licenses
Licenses are provided on a disk and are loaded into your DeltaV database as shown below. The file number must match the number on your system identifier.
EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
6-6
Assigning Licenses to Nodes
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
6-4
Total System DSTs
For a system summary of DST usage, the ProfessionalPLUS Station licensing properties can be viewed from the DeltaV Explorer. The example below indicates a total of 6 DSTs have been configured. Each type of DST shows 0 DSTs which means this system hasn’t been licensed and nothing can be downloaded.
Cascade (CAS) — The setpoint is adjusted by another function block through the Cascade input parameter and the loop calculates the output based on the algorithm.
DST licensing is based on the number of inputs and outputs as follows:
Analog Output
Analog Input
Discrete Output
Discrete Input
DeltaV will keep track of DST usage for you. LI-101 references 1 Analog Input channel, as a result it uses 1 DST.
EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
6-3
Device Signal Tag (DST) Licensing
Actual — This is the block’s current mode. This may differ from the target based on operating conditions.
Normal — This is the mode the block should be set to during normal operating conditions. May be configured and read but is not used by the block algorithm.
Course 7009 - Rev 5 - 8/15/02
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6-10
Mode Fields
DeltaV Mode Fields include:
Target — Mode is requested by the operator. Only modes from the permitted list may be requested.
Baidu Nhomakorabea
Local Override (LO) — The block is put into this mode when tracking is activated. When tracking is deactivated, the block returns to its target mode.
Note:
Licenses can be assigned to the appropriate node using drag n’ drop.
EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
6-8
Modes
DeltaV Modes include:
Manual (MAN) — The output is set by the operator.
Automatic (AUTO) — The setpoint is adjusted by an external source and the loop calculates the output based on the algorithm.
Out of Service (OOS) — The block does not perform the algorithm. The status is set to bad.
EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Remote Out (ROUT) — Similar to Manual except that the OUT value is supplied by an external control program rather than directly by the operator. OUT is supplied through the ROUT_IN parameter.
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Modes
BKCAL_IN
TANK
IN
OUT
LEVEL
CAS_IN BKCAL_OUT
IN FLOW OUT
MOTOR
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EMERSON Process Management – Educational Services
Course 7009 - Rev 5 - 8/15/02
Copyrighted Material / Duplication Prohibited
Initialize Manual (IMAN) — The block output is being set in response to the back-calculation input parameter status. For example, when the secondary loop is not in Cascade, the primary loop goes to IMAN to prevent windup.