4. Indications and Controls
4.1 Indicators
When the detector is switched on the LED indicator flashes briefly to signify power-up. During the first 10-seconds the detector
will latch the fault condition and the Detector/P-UIM will require resetting once the beam path is clear.
4.1.1 DETECTOR
DETECTOR – Red LED: Low Level Alarm - The LED pulses 0.5 sec ON, 0.5 sec OFF for 30 seconds.
High Level Alarm - The LED pulses 0.25 sec ON, 0.25 sec OFF for 2 minutes.
Life Fault – The LED is ON if the beam is blocked on power-up or reset and the detector fails to calibrate.
4.1.2 P-UIM
OUTPUT ON - Green LED: Indicates the supply is healthy. It extinguishes during the reset period.
OPEN – Red LED: Is lit when the detector connection is open circuit.
SHORT – Red LED: Is lit when the detector connection is short circuit.
LIFE – Red LED: Is lit flashing to indicate the P-UIM and Detector are both healthy.
Is lit steady to indicate a life fault
Is off for all other fault and alarm conditions.
CLEAN – Red LED: Is lit when a cleaning fault condition has been detected.
BEAM BLOCKED – Red LED: Is lit when a beam-blocked condition has been detected.
LOW – Red LED: Is lit when a Low Level Alarm has been detected.
HIGH – Red LED: Is lit when a High Level Alarm has been detected.
4.2 Controls
4.2.1 P-UIM
RESET (Top Panel): Pressing the RESET pushbutton will cause the system to restart.
RESET (Remote Input): The RESET input should be connected to the 24 V supply via a normally closed contact.
Open the reset contact for <1 sec will cause the P-UIM to reset.
Open the reset contact for >1 sec and <4 sec will cause the P-UIM and the IR Detector to
reset.
Open the reset contact for >4 sec will cause a fault.
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