Trouble Shooting - Leds - YASKAWA CP 040 RS422/485 Manual

Basics and mounting

Trouble shooting - LEDs

2.8 Trouble shooting - LEDs
General
Sum current of the elec-
tronic power supply
exceeded
Error in configuration
Module failure
28
Each module has the LEDs RUN and MF on its front side. Errors or incorrect modules
may be located by means of these LEDs.
In the following illustrations flashing LEDs are marked by ☼.
Behaviour: After PowerON the RUN LED of each module is off and the MF LED of each
module is sporadically on.
Reason: The maximum current for the electronic power supply is exceeded.
Remedy: As soon as the sum current of the electronic power supply is exceeded, always
place the power module 007-1AB10.
Behaviour: After PowerON the MF LED of one module respectively more modules
flashes. The RUN LED remains off.
Reason: At this position a module is placed, which does not correspond to the configured
module.
Remedy: Match configuration and hardware structure.
Behaviour: After PowerON all of the RUN LEDs up to the defective module are flashing.
With all following modules the MF LED is on and the RUN LED is off.
Reason: The module on the right of the flashing modules is defective.
Remedy: Replace the defective module.
Ä Chapter 2.6 'Wiring power modules' on page 21
HB300 | CP | 040-1CA00 | en | 18-28
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