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8
Service functions and diagnostic messages
78
Festo – GDCP-CMMP-M3-FW-EN – 1203NH
8.1.9
Commissioning status
Motor controllers sent to Festo for servicing are loaded with other firmware and parameters for testing
purposes.
Before it is commissioned again at the location of the final customer, the motor controller
CMMP-AS-...-M3 must be parametrised. The parametrisation software queries the commissioning
status and prompts the user to parameterise the motor controller. At the same time, the device signals
that it is ready for operation but has not yet been parametrised by displaying “A” on the seven-segment
display.
8.1.10
Rapid discharge of the intermediate circuit
When a mains supply failure is detected, the intermediate circuit is quickly discharged within the safety
time specified in EN 60204-1.
Delayed connection of the brake chopper by power class in parallel operation and when a mains failure
occurs ensures that the main energy during rapid discharge of the intermediate circuit is taken over
through the braking resistors of the higher power classes.
But the rapid discharge can be ineffective in certain device constellations, especially
when several motor controllers are connected in parallel in the intermediate circuit or a
brake resistance is not connected. The motor controllers may carry dangerous voltage for
up to 5 minutes after being switched off (capacitor residual charge).
8.2
Operating mode and error messages
8.2.1
Operating mode and error display
The motor controller CMMP-AS-...-M3 has three LEDs and one seven-segment display on the front for
showing the operating statuses.
Element
LED col-
our
Function
Seven-segment display
–
Displays the operating mode and a coded error number in
case of error.
LED1
Green
Operating status
Red
Error
LED2
Green
Controller enable
LED3
Yellow
CAN bus status display
RESET button
–
Hardware reset for the processor
Tab. 8.2
Display components and RESET pushbutton
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