ABB ETL600, Instruction Manual

Page: 224 / 382

ABB Switzerland Ltd
1KHW001489-EN ETL600
Caution
The 'RESET' button on the module G4AI should
not
be pressed while executing routine tests during
normal operation, as this causes re-initialization of
the module and blocks it for some seconds.
During this time no commands can be transferred.
Caution
During routine tests with the ETL600 in operation
the "
Reset
" item in the
Equipment
menu of the
HMI600 should not be activated, as this causes the
equipment to be re-initialized and thus be blocked
for some seconds.
During this time no commands can be transmitted.
If the loop test fails in at least two consecutive attempts, the equipment
must be taken out of service and tested according to
b)
below.
Caution
Tuning & testing procedures - refer to
b)
below – will
interrupt the normal operation of the equipment.
b) Removing the equipment from service for testing:
1. Switch off the equipment and open all the isolating terminals to the
protection afterwards.
2. Switch on the equipment again by closing the circuit breakers.
3. Choose the menu
Equipment / Tuning & testing
, click the
Test
NSD600
button and set the local test mode by clicking
Set local
loop
.
4. Check that the unit is indeed in the local test mode (corresponding
Warning message after uploading status 'Warning: local loop
active').
5. Inject commands at the local terminal blocks and check the local
command outputs for correct operation (to be done in relation to
the Programming and Testing Instructions in the annex).
6. Choose the menu
Equipment / Tuning & testing
, click the
Test
NSD600
button and set the local test mode to off by clicking
Normal operation
.
7. Check that the unit is indeed in the normal operation mode (no
alarm and warning messages after uploading equipment status
'No alarm'; if alarm messages appear refer to section
9.6
).
8. Initiate a manual loop test: from the
Equipment
menu point to
Commissioning and maintenance
and click
NSD600 send
looptest
.
9. Providing no failure has been observed and all the alarm signals
have reset, close the isolating terminals again.
8-8 November 2005 Operation and Maintenance