真空压力开关

• Span is is 10ms until switch output perform soon after auto shift input. • When corrected set value exceed the accepted set range with auto
shift input, corrected value is not memorized. The case exceeding high limit displays " UUU ", the case exceeding low limit displays " LLL". • Corrected value" C_5" after auto shift input vanish when off the power. • Corrected value "C_5" for auto shift function is reset as zero (initial value) when re-supplied power.
Without Auto shift Change of pressure source can not bring correct decision.
Normal pressure Lower pressure Increased pressure
source
source
source
^ •yw" - w . ' Switch outout ON
Measure mode
l(SET)S,4s
Conditions and explanations for auto shift function
• Keep constant pressure for is 5ms from the fallen signal of auto shift input.
9 . Auto shift function
While measured pressure becomes standard pressure value when auto shift input is received, this function correct set value ( P _ l ) or ( n _ l ) and (P_2) or (n__2) of switch output I , and set value (P_3) or (n_3) and (P_4) or(n_4) of switch output2.
the set response lime.
11 . Coutions for operation
When this switch is used in the place where water and dust splashes on. insert tube in the air-relieving port, and provide piping of the opposite side up to the sale position to keep from water and dust. (Refer to below)
u 1'2
OFF
\J \
Using with auto shift input, accepted set range is like below.
Set pressure range
Accepted set range
-100.0 to 100.0 kPa
-100.0to100.0kPa
10.0to-101.3kPa
ims
T^
fRespon
^S
I Orns <-
switch c Lauto sh
For the safe position to keep ^|_ | from water and dust
•K Concerning tube, insert it in the air-relieving port at the root. ;8 SMC TU0425 (material: Polyurethane, l.D. ^ 2.5 ) suits to this
Normal pressure Lower pressure Increased pressure
source
source
source
^ \ /- \ P1
J t^J sJ P2
"'*."-, \
?V
J

^ ~u Switch outout ON
1-2
OFF
^ LT
Hi Auto shift input Lo
o - 5. Bottom display mode While measuring, displayed value of mil), pressure can he held. Keep pressing V button for over Isec. in order to change into peak display mode, so that displayed value turn on and off. In order to release the hold, keep pressing V button (or over I sec. once more. Measure mode recovers.
-101.3 to 101.3 kPa
-0.1 to -I.OOOMPa
-1.000 to I.OOOMPa
10 . Preventive function for chattering
Pressure source bring sudden change at performance of large bore cylinder. Wrong operation such as chattering cun he prevented by varying response time of switch output. Response time can he selected among 4 types. Switch output is performed with average of measured pressure value for
Air-roliving port
With Auto shift Set auto shift input as Lo at the time pressure source change, in order to memori?,e the pressure change and to correct pressure set value, so that correct decision emerge.
• At auto shift input, display indicates " ooo" for approx. 1sec. Pressure value at that time is memorized as corrected value " C_5".
• With corrected value which is memorized, set value " P _ 1 " to"P_4" or "n_1 "to"n,4" are corrected.
8 - 3. Key lock mode In measure mode, this can prevent from wrong operation indicated by operation button on the front of switch in advance. Set lock mode in order not to accept button operation.
( notei ) no EEPROM in the memory of corrected value.
S - 4 . Peak display mode While measuring, displayed value of max. pressure can be held. Keep pressing A button for over I sec. in order to change into peak display mode. so that displayed value turn on and off. In order to release the hold, keep pressing A button for over I sec. once more. Measure mode recovers.
8 - 6. Zero reset
For measured pressure in ambient pressure and within the range of ' 7()digit, displayed value can be adjusted as /.cro. Keep pushing " A + V " buttons simultaneously in order to reset displayed value as y.ero. Release these buttons in order to finish z.ero reset operation and recover measure mode.
product.