32 Rockwell Automation Publication 440R-UM012E-EN-P - November 2018
Chapter 5 Diagnostic Status Indicators and Troubleshooting
Status Indicators During
Diagnostics
The flashing of the status indicators indicate diagnostics. The PWR/Fault
indicator shows the major fault. The IN1 indicator shows more detail.
The flashing rate pauses and then repeats itself.
Table 7 - Diagnostic Status Indicators
IMPORTANT For accurate diagnostics, always start counting after the first pause. The first
cycle may not be accurate.
Power/Status Indicator Status/Faults
Solid red An undeclared fault has occurred.
Cycle power to clear the fault and return the GLP safety relay to an operational state.
Flashing red one time The GLP safety relay is in configuration mode.
When the Logic Switch is set to 0 or 9 and the power is cycled, the PWR/Fault status indicator blinks at a 1X rate. The GLP safety relay is in
configuration mode. Rotate the switches to the desired positions and cycle power.
Green with flashing red two times The configuration does not agree with the EPROM.
One or more of the rotary switches have changed during operation.
The GLP safety relay continues to operate, and the switch or switches can be returned to their original position.
Green with flashing red three times A lock request was made on terminal S44 but the gate remains open.
Close the gate (the voltage at terminals S12 and S22 should be 24V DC), press the unlock request, and then press the lock request.
Green with Flashing red four times Overspeed - the speed exceeded the SLS2/Time setting.
Reduce the speed and press Reset.
Green with flashing red five times Over Safe Speed Limit (SLS1).
Reduce the speed.
Green with flashing red six times Gate appears open when it should be closed and locked.
Try reclosing the gate.
Check voltage at S12 and S22 – they should be 24V.
Flashing red two times Upon power-up, one or more of the rotary switch settings do not agree the value that is stored in the EEPROM.
Return the switches to their proper settings and cycle power or reconfigure the GLP safety relay.
Flashing red three times Proximity Position Fault (In Logic Settings 1…4, both proximity sensors are low).
Flashing red four times The input at S12 and S22 opened while the safety gate was locked.
Flashing red five times Logic Link output or L61 fault.
Correct the fault and cycle power to the GLP safety relay.
Flashing red six times S12 or S22 may be open.
X14 or X24 fault.
Check for short circuit from X14 to X24.
Cycle gate. Check voltage at S12 and S22 – they should be 24V.
Correct the fault and cycle power to the GLP safety relay.
Flashing red seven times With a Logic setting of 1 or 2, the proximity sensors detected speed exceeding the SLS1 setting for more than four pulses on each proximity
sensor when the GLP outputs (X14/X24/L11/Y32) are OFF.
Note: This covers two cases:
1. On power-up, the gate is locked and the outputs are OFF.
2. After pressing unlock, the gate is unlocked and the outputs are OFF.
Prevent excessive machine movement or set the SLS1 setting to a higher level.
Flashing red eight times Proximity Sensor input fault.
IN1 flashing 5 times: P12 ON and P22 changing state.
IN1 flashing 5 times: P22 ON and P12 changing state. In Rev A 100, IN1 flashes 5 times whether it is P12 or P22. This fault occurs whether
the GLP safety outputs are ON or OFF - the output state is irrelevant. In Rev A 202 and later, the IN1 indicator does not flash. Only the
PWR/Fault indicator flashes 8 times.
Check the proximity sensor connections and sensing distance. Check the voltages at P12 and P22. The voltage is 24V when the proximity
sensor is ON and 0V when the proximity sensor is Off. Cycle power after fixing.
Flashing red nine times 51 or L61 fault.
Check the voltages at terminals 51 and L61. They are less than 3V when OFF and greater than 15V when ON.
Flashing red ten times Overvoltage – The supply voltage exceeded 28V DC.
Reduce the power supply to 24V +10/-15% and cycle the power.
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