Sps No Response - LNS QUICK LOAD SERVO S3 Troubleshooting And Spare Parts Manual

Chapter 1: Alarms

SPS No Response

S P S
N O
R e s p o n s e
X A t t a c h e d
Description:
The SPS No Response alarm occurs when there is a communication problem between the remote control station and the LNS PLC.
Solution:
Cause
Bad connection
PLC program loss
Low voltage
• Check the connectors between the PLC and the remote control station,
located inside the cross piece to make sure they are attached correctly.
• Check for continuity between the PLC and the remote control station and
also at the connectors.
• If the battery voltage in the PLC is low the Battery LED (red) will illuminate.
If the bar feed is powered off during this time the PLC will lose its memory.
Replace the PLC battery (3VDC Lithium/CD2032). Download the PLC
program from the Smart Media Card; refer to
• Check the incoming voltage to the PLC. Fluctuation in the DC voltage can
cause the PLC as well as the remote control station to function improperly.
Solution
PLC fault.
QUICK LOAD SERVO S3
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