PendoTECH PressureMAT PMAT2, Руководство пользователя

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PressureMAT User Guide
Revision 8
Page 42/48
APPENDIX F: Pinch Valve Box Accessory (PDKT-PVE)
Overview
One to four pinch valves can be in each device. The cable to the associated PressureMAT relays must
be wired the normally OPEN configuration (wired to S and T as shown in Section 1.2.1). The valves
are normally closed and when there is NO POWER to the valve box or to the PressureMAT, the valves
will be closed. When power is supplied to the valve box the green LED will illuminate. When there is
an alarm condition on the PressureMAT, the PressureMAT relay will close and the valve will open.
Each valve is in the following configuration relative to the alarm signal on the PressureMAT System.
PressureMAT
Condition
Position
LED
(AMBER) Normally
Closed
Pinch Valve
No Alarm Signal OFF CLOSED
Alarm Signal ON OPEN
Note: When the power supply is removed from the power inlet connector or the power
supply is unplugged from the wall, the valve will be in the “No Alarm Signal” position
independent of PressureMAT condition.
Device
Component Specifications
Enclosure Material: ABS Plastic, top and bottom pieces of box sealed with gasket seal rated
to IP66.
Note: Hole where the valve is mounted is not water tight.
Pinch
Valves - BioChem Valve Series 100P ( http://www.bio-chemvalve.com/Pinch_Valves.pdf )
- Pinch valve catalog number set for specific size tubing and noted on device
Relay
Signal
Input Connexal PN 6282-2SG-3XX supplied with mating connector and 12 foot cable
with two wire leads for connection to PressureMAT. Connexal pin 1 power (plus,
pin with raised dot) for connection to PressureMAT pin “S”; Connexal pin 2 (minus)
connected to PressureMAT pin “T”.
Power Input - 24 Volts DC
- 0.5 amp max per valve
WARNING- THE PINCH VALVE WILL CLOSE WHEN THE ALARM SIGNAL IS REMOVED FROM
THE VALVE. MAKE SURE NO FINGERS OR OBJECTS EXCEPT TUBING ARE INSERTED
INTO THE PINCH VALVE WHEN THE VALVE CLOSES.
WARNING: IF A PRESSURE SENSOR IS NOT CONNECTED WHEN POWER IS SUPPLIED TO
THE SYSTEM, THE PRESSURE WILL GO TO A VALUE GREATER THAN 77 PSI / 5.3 BAR AND
A HIGH PRESSURE ALARM CONDITION WILL OCCUR ON THE RESPECTIVE CHANNEL(S)
AND THE RELAY WILL SWITCH TO THE ALARM SIGNAL. IF A SENSOR IS INADVERTENTLY
DISCONNECTED DURING A PROCESS AND STOPS MONITORING PRESSURE, THERE WILL
BE AN ALARM SIGNAL. ALSO, A NEW SENSOR THAT HAS NOT BEEN ZERO-CALIBRATED
CAN BYPASS AN ALARM SET-POINT TRIGGERING AN ALARM SIGNAL.