ABB ETL600 Instruction Manual page 243

ETL600
HMI600 Alarm Text
• +12 V overvoltage
• -12 V overvoltage
• +5 V overvoltage
• +3.3 V undervoltage
• +3.3 V overvoltage
• +1.8 V undervoltage
• +1.8 V overvoltage
• Event recorder not
operational
• RF receiver input
overdriven
• No valid license key
• RF hybrid missing
Troubleshooting
1KHW001489-EN
Explanation and corrective actions
(the latter in italics)
Overvoltage detected on the +12 V / –12 V / +5 V rails
supplied by the DC-DC converter B4LE.
Replace the DC-DC converter B4LE. If the error persists,
replace P4LT.
Over- or undervoltage detected on the +3.3 V / 1.8 V rails
on P4LT.
Disconnect all cables to P4LT. Switch off the power to
ETL600 and switch it on again after some seconds. If the
error persists, replace P4LT.
Storing of events to the nonvolatile flash memory wasn't
successful.
Check if a valid license key is mounted on P4LT. Make
sure that no firmware download is in progress. Switch off
the power to ETL600 and switch it on again after some
seconds. If the error persists, replace P4LT.
The RF receive signal to P4LT exceeds the maximum
allowed level. The reasons can be
- Excessive noise on the power line,
- Distortion produced by parallel PLC transmitters,
- Distortion produced by the own transmitter,
- Poor return loss seen into the coupling device,
- Insufficient selectivity of the Rx filter or – if no Rx filter
is used – of the Tx filter.
Twist the Rx level potentiometer on the RF hybrid slowly
anticlockwise until the alarm disappears. If the alarm
persists or if the link performance (SNR, datarates) is not
satisfying, repeat the following Tuning and Testing
procedures:
- Tune Tx RF filter,
- Adjust Tx RF level,
- Adjust Tx alarm level,
- Tune Rx RF filter,
- Adjust Rx RF level,
Then repeat the commissioning procedure as described in
chapter 7.
The license key is missing or it doesn't cover the
configured services of ETL600.
Insert a license key onto P4LT that covers the configured
services.
RF hybrid or dummy load in the power rack P7LA has
been removed, interrupting the link .
Reinsert RF hybrid or dummy load.
November 2005
ABB Switzerland Ltd
9-17