2
Product description
18
Festo – GDCP-CMMO-ST-EA-SY-EN – 2017-05c – English
Write cycles to the permanent data memory
A flash memory is integrated in the motor controller as a non-volatile memory element. With the fol
lowing procedures, entries are written to the flash memory:
–
Download of a parameter file
–
Firmware update
–
Teaching with automatic storage
–
Backing up of parameters via FCT
–
Configuration of fault properties / error responses
–
Recording of movements with the trace function in FCT
The number of usable sectors declines with flash storage in terms of write/delete operations. The
FLASH memory used by the CMMO-ST is designed for 100,000 write cycles.
Note
Damage to the FLASH memory
In positioning mode, the target positions for absolute sets of commands can be taught
and saved automatically via the I/O interface.
Do
not
use the TEACH function in combination with “automatic storage” in continu
ous operation. This would otherwise rapidly use up the permitted number of write
cycles.
Disable automatic saving after saving via FCT
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FCT [...][Controller][I/O Configura
tion]
2.2.5
Supported motor configurations
Step motor and holding brake
The motor controller supports
–
Motors without a holding brake
–
Motors with an integrated holding brake (electrically actuated spring accumulator brake)
The holding brake is not suitable for braking moving masses or loads.
The holding brake is actuated automatically by the controller enable of the motor controller.
Motor configuration
Function
Without holding brake
The actuator can move freely once the controller has been inhibited.
With holding brake
After inhibiting the controller, the actuator is maintained in position by the
holding brake.
Tab. 2.7
Motor configuration: holding brake