IM30-CV
Doc. N° MO-0150-ING
Rev.
1
Date
14.07.2003
Copyright 2010 - Microener
Firmware:
1.0X
Pag
16
di
24
13. MANUAL AND AUTOMATIC TEST OPERATION
13.1 Mode "TESTPROG" subprogram "W/O TRIP"
Operation of the yellow key activates a complete test of the electronics and the process routines.
All the leds are lit-on and the display shows (TEST RUN).
If the test routine is successfully completed the display switches-over to the default reading (I/Inxxx%).
If an internal fault is detected, the display shows the fault identification code and the relay R5 is deenergized.
This test can be carried-out even during the operation of the relay without affecting the relay tripping in case a
fault takes place during the test itself.
13.2 Mode "TESTPROG" subprogram "WithTRIP"
Access to this program is enabled only if the current detected is zero (breaker open).
Pressing the yellow key the display shows "TEST RUN?". A second operation of the yellow key
starts a
complete test which also includes the activation of all the output relays.
The display shows (TEST RUN) with the same procedure as for the test with
W/O TRIP
. Every 15 min during
the normal operation the relay automatically initiates an auto test procedure (duration
10ms).
If any internal fault is detected during the auto test, the relay R5 is deenergized, the relevant led is activated
and the fault code is displayed.
WARNING
Running the
WithTRIP
test will operate all of the output relays. Care must be taken to ensure that no unexpected or
harmful equipment operations will occur as a result of running this test.
It is generally recommended that this test be run only in a bench test environment or after all dangerous output
connections are removed.
14. MAINTENANCE
No maintenance is required. Periodically a functional check-out can be made with the test procedures described
under MANUAL TEST chapter. In case of malfunctioning please contact
Microelettrica Scientifica Service or the local Authorised Dealer mentioning the relay's Serial No reported in the label
on relays enclosure.
WARNING
In case of Internal Relay Fault detection, proceed as here-below indicated :
If the error message displayed is one of the following “DSP Err”, “ALU Err” ,”KBD Err” ,”ADC Err”, switch-off
power supply and switch-on again. If the message does not disappear send the relay to Microelettrica
Scientifica (or its local dealer) for repair.
If the error message displayed is “E2P Err”, try to program any parameter and then run “W/OTRIP”.
If message disappear please check all the parameters.
If message remains send the relay to Microelettrica Scientifica (or its local dealer) for repair.
15. POWER FREQUENCY INSULATION TEST
Every relay individually undergoes a factory insulation test according to IEC255-5 standard at
2 kV, 50 Hz 1min. Insulation test should not be repeated as it unusefully stresses the dielectrics.
When doing the insulation test, the terminals relevant to serial output must always be short circuited to ground.
When relays are mounted in switchboards or relay boards that have to undergo the insulation tests, the relay
modules must be drawn-out of their enclosures and the test must only include the fixed part of the relay with its
terminals and the relevant connections. This is extremely important as discharges eventually tacking place in
other
parts or components of the board can severely damage the relays or cause damages, not immediately evident to the
electronic components.
