Bosch Rexroth IndraControl XM21, Руководство по эксплуатации

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Fig. 12-24: Initialization and cyclic monitoring of the CPU load
This program section has to be called cyclically. Once the value "TRUE" was de-
tected for the variable "gboOverload", the PLC user program should respond ac-
cordingly, e.g. by switching off program parts or executing a minimal program.
13 Error causes and troubleshooting
The following table describes the LEDs on the power connector.
LED LED display Error causes and troubleshooting
U
L
LED is off 24 V voltage error
24 V supply voltage is not connected
24 V supply voltage is connected with reverse polarity
ON LED is off Error when loading the programmable logic
Initiate fallback mode (see
chapter 12.5 "Fallback and recovery" on
page 54 )
T LED is red Temperature error
Control was switched off due to overheating.
●
Ensure a lower ambient temperature
●
Check the control installation
●
Avoid heat accumulation impeding the natural convection
Tab. 13-1: LEDs in the voltage power connector
Further operating displays and error displays are located on the individual mod-
ules and terminals. For information on the other displays, refer to the manual of
the IndraControl S20 component (see also chapter 1.3 "Related documents" on
page 2 ).
IndraControl XM21, XM22 Controls 59/69
Error causes and troubleshooting
R911340667_Edition 04 Bosch Rexroth AG