Emerson PACSystems RSTi-EP - Page 515

User Manual Section 12
GFK-2958L May 2021
LED Indicators and Troubleshooting 501
Module
LED
Status
Recommended action
—
Check channel error
—
Overload at the OSSD output level
—
– Remove cross connection at
OSSD
—
External feed-in recognized from field
side
—
Measure voltage at OSSD pin (4.3)
vs. GND (4.4).
—
If a voltage is present, check the
wiring.
—
Attention: safety hazard! Shut
down the system and prevent it
from switching on again.
—
Internal error detected
—
Module might have switched off
caused by overtemperature; check
the temperature inside the switch
cabinet
—
Perform a cold start within 24
hours
—
If the error has not been fixed,
send the module to Emersonfor a
technical examination.
—
Interruption in one of the two safety
loops of a safety circuit for at least 3
seconds.
—
Check safety circuit for
interruptions if an interruption of
the safety channel is not part of
the application.
—
Cross connection between the safety
loops for at least 3 seconds.
—
Check safety circuit for cross
connections.
1.1
Off: Safety circuit 1 interrupted
Yellow: Safety circuit 1 OK
—
Check safety circuit 1
1.2
Off: Safety circuit 2 interrupted
Yellow: Safety circuit 2 OK
—
Check safety circuit 2
4.1
(DELAY only)
Off: SS1 not active
Yellow: SS1 active, 24Vdc at output
4.2
Off: OSSD not active
Yellow: OSSD active, 24Vdc at output
4.3
Green: Feed-in voltage in valid range