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HR6S Safety Relay Module
LED Display (Example for HR6S-AT)
LED
State
Power supply on
POWER
No power supply
Safety-related input activated
Snn
Safety-related input deactivated
Valid start condition
START
No valid start condition
Waiting for valid start condition
Normally open safety-related outputs activated
STATEn (*3)
Normally open safety-related outputs
deactivated
ERROR
Synchronization time alert
Snn (*1)
Other LEDs retain normal behavior
Snn (*1)
ERROR
Interlock alert
Snn (*2)
Other LEDs retain normal behavior
Snn (*2)
ERROR
General error detected
Module in defined safe state
LEDs (*4)
ERROR
Configuration error detected
LEDs (*4)
ERROR
Power supply error detected
POWER
30
Explanation
ERROR
Snn (*2)
Snn (*2)
ERROR
START
ERROR
STATEn (*3)
ERROR
START
STATEn (*3)
LEDs
: LED flashing
*1: Snn: n = number off LED of affected input, LEDs flashing alternatingly
*2: Snn: n = number off LED of affected input, LEDs flashing synchronously
*3: STATEn: n = 1 = Instantaneous
*4: LEDs: All LEDs except POWER
* For details, refer to the instruction sheet.
LED
State
Cross circuit detected at safety-related input
Cross circuit detected at Start input
Error detected at safety-related output
Error detected at safety-related output of
expansion module
All LEDs light up during power-up for
diagnostsics purposes.
: LED solid on
: LED off
n = 2 = Delay
Explanation
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