Emerson PACSystems RSTi-EP User Manual page 427

User Manual
GFK-2958J
1.1
4.2
4.3
EP-1902 Status LED
EP-1922
LED Indicators and Troubleshooting
Interruption in one of the two safety
—
loops of a safety circuit for at least 3
seconds.
Cross connection between the safety
—
loops for at least 3 seconds.
Off: Safety circuit 1 interrupted
Yellow: Safety circuit 1 OK
Off: OSSD not active
Yellow: OSSD active, 24Vdc at output
Green: Feed-in voltage in valid range
Red:
—
Module has not been snapped properly
—
Error in the supply voltage
—
Channel error
—
Overload at the OSSD output level
—
External feed-in recognized from field
—
side
Internal error detected
—
Interruption in one of the two safety
—
loops of a safety circuit for at least 3
seconds.
Cross connection between the safety
—
loops for at least 3 seconds.
Check safety circuit for
—
interruptions if an interruption of
the safety channel is not part of
the application.
Check safety circuit for cross
—
connections.
Check safety circuit 1
—
—
—
Check that the module has been
—
snapped into place properly
Check the supply voltage
—
check +24 V input current path
—
Check voltage on plug 4.3; in
—
case of cascading 0 V might be
properly, therefore this is not an
error
Check channel error
—
– Remove cross connection at
—
OSSD
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.
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.
Check safety circuit for
—
interruptions if an interruption of
the safety channel is not part of
the application.
Check safety circuit for cross
—
connections.
Chapter 12
Oct 2019
412