User Manual

Publicatio n 1000-UM001B-US-P - July 20 00
Troubleshootin g G ui de 5-3
SLS Test Procedure
If an SLS box needs to be remo ved from the main co ntrol panel , it can be
tested as follows.
Wiring diagram: Y-155798 Rev. M = SLS box
Y-156328 Rev. B = SLS switch
Y-156386 Rev. B = test procedure control panel
In addition to the normal Allen-Bradley test procedure, the following should
also be done:
1. Conn ect tes t cont rol pan el per Y-1 56 38 6 Rev . B at PLC connecto r and
power tes t pa nel with 24V DC separa te con trol .
2. Connect four SLS swi tches wired per Y- 156328 Rev. B.
3. Apply 480V or 400V three-phase to line side of isolation contactor.
4. Turn the four SLS switches to ON positi on.
5. Energize 1SR with selector switch on test control panel.
6. Observe all LEDs in SLS box for condition. Observe pilot lights on test
control panel for condition. SR, 1SR, IC, and 1CR should be energized.
7. A ll SLS switch SAFE li ghts should b e o f f .
8. Measure DC voltage on power supply output. If necessary, adjust to
27V.
9. Check voltage on secondary of CCT.
Table 5.B SLS Switch
Problem Component Possible Cause Check Suggested Action Repairable?
Does not
illuminate with all
other circuitry
checking OK
Pilo t light Burn ed out bulb
Loose
connections
Connections Replace bulb.
Tig hten connections.
Yes
Contacts do not
operate proper ly
SLS switch Bad switch Continuity and operation Replace. No
Handle
mechanism
For operation Replace. No
Contacts do not
operate proper ly
SLS switch
auxi liary contact
Bad contact Continuity and operation Replace. No