77l_Fehlersuche-en.fm, 06.09.2011 P2077SB/EN 2011-09 65
Troubleshooting
15
15.3 Tightening module CPS3 in power distribution box PDB-CPS…
15.3.1 "Ready" LED
15.3.2 "EM stop" LED (emergency stop)
Error
Description
Possible causes Measures and remedies
"Ready" LED does not light up 24 V supply is unavailable ➔ Check the 26 V voltage at
"XS3" terminals 1 and 4
PDB-CPS… is disconnected from
the power supply
➔ Check the mains supply
24 V power adapter is discon-
nected from the power supply
➔ Check the fuse
Fuse in the CPS3 is
high-resistance
➔ Check the 26 V voltage at
"XS4" terminals 1 and 4
➔ Switch off the PDB-CPS…
and switch back on again
after a minute.
➔ Replace the CPS3
Error
Description
Possible causes Measures and remedies
"EM stop" lights up
CPS3
is in
Emergency stop status.
Intermediate power circuit (380
VDC) is deactivated.
No signals at the inputs Emer-
gency stop "XS4", terminal 2 or
Control on "XS5", terminals 3
and 4.
➔ Check voltage 24 V at CPS3:
Plug connector "XS4"
Terminals 2 and 4;
Plug connector "XS5"
Terminals 3 and 4
➔ Check voltage 24 V at CP:
Plug connector "XS3"
Terminals 2 and 6;
Plug connector "XS2"
Terminals 5 and 6
Conclusion: the signals are not
generated by external controls.
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