Parker Hannifin Corporation
Pneumatic Division Europe
www.parker.com/pde
7
Integration Guide
P33 Safety Exhaust Valve
FRL-SIF-120
_EU
Parker Pneumatic
General Operation Guide (LED Status Lights)
FAULT (FLT):
Flashing Red:
Sensors are in different states. The P33 unit will automatically fail to a mechanical safe state
(no downstream pressure). The monitoring logic should automatically shut off power to both solenoids.
• If FLT light is flashing and either or both solenoid lights are ON it indicates the monitoring logic is not
properly detecting this fault. The P33 unit should be powered down and monitoring logic reviewed and re-
tested before putting into operation again.
• If FLT light is flashing and both solenoid lights are OFF it indicates the unit has an internal malfunction and
should be replaced before continuing operation.
OFF :
Sensors in same state – no issue
Solenoid Power
(SOL 1/2):
Green:
Power is
properly applied to
solenoid 1 and/or
solenoid 2
OFF:
No power
is applied to the
solenoids. Check
connection from
Solenoid M12 to
output device
Sensor Power
(SEN PWR):
Green:
Power is
properly applied to
the sensors
OFF:
No power to
the sensors. Check
connection from
Sensor M12 to input
