Fuses; Alarms; Table 9-1 Fuses In The Equipment - ABB ETL600 Instruction Manual

ABB Switzerland Ltd
Caution
•
Fault-finding may only be conducted by properly trained personnel
that have been authorized to do so.
•
It is not permitted to insert or withdraw modules during operation;
the power supply must be switched off first.
•
The modules contain CMOS integrated circuits that can be
damaged by electrostatic discharge. It is important to take certain
precautions to prevent electrostatic discharge before removing the
packing or withdrawing them from the racks. Indispensable
precautions to avoid ESD damage are earthing of people working
on the modules and a working surface that is protected against
electrostatic discharge. Only transport modules in their original
packing or installed in racks.
•
The modules are manufactured according to the latest SMD
technology. Repair at the component level is therefore neither
intended nor recommended. As a rule, corrective action is confined
to locating and replacing defective modules.
•
Dangerous voltages can occur on the connections to the modules
RF-Converter P4LT/P4LU, Alarm relay Module R1BC and
Teleprotection Interface G4AI. Take care not to touch these
connections under any circumstances.
•
It is not permitted to modify the equipment in any way.
9.2.

Fuses

Module
B5LC (115 VAC)
B5LC (230 VAC)
Table 9-1
9.3.

Alarms

The alarm concept of the ETL600 system is designed to
•
detect and locate the sources responsible for abnormal operation
of the system,
•
provide information about the kind of problems detected.
Fig. 9-1 shows the six major fault locations of a PLC link. By combining
the alarm information of both terminals of the link, it is possible to
locate the source of a problem (Table 9-2).
9-4
1KHW001489-EN
Read the following safety instructions carefully
before attempting to locate faults.
Type of Fuse
B5LA T 6.3 A/250 V
T 4 A/250 V
T 2 A/250 V
B4LE T 6.3 A/250 V
Fuses in the equipment
November 2005
ETL600
Troubleshooting