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6
Functions
Festo – GDCP-CMMP-M3-FW-EN – 1203NH
59
6.7.2
Brake control and automatic brake
Function
The motor controller CMMP-AS-...-M3 can directly control a 24V holding brake integrated into the motor
Caution
If the maximum permissible connected loads are not complied with:
–
The controller can be destroyed
–
The functioning of the holding brake is not reliable.
•
For correct connection and reliable control of the brake (safe stop, emergency stop),
observe the instructions in the hardware description
•
In the case of higher current needs, the brake must be switched via a coupling relay,
if necessary with interference suppression.
Note
The holding brake must not be used to brake moving masses. Braking masses in move-
ment leads to increased wear and the functional failure of the holding brake:
–
The brake must be opened before a new positioning motion begins.
–
The drive must stand still before the brake is closed.
•
Pay attention to the required time delays (brake delay time), in particular for holding
brakes with high mechanical inertia.
With longer time delays between command records, the automatic function of the holding brake closes
the brake and switches off the controller output stage (less temperature rise).
Note
In certain applications (e.g in synchronous mode), the automatic function can damage
the brake and/or the system.
In the case of parameterisation via the FCT software, the automatic brake can therefore
not be activated for synchronous operation.
•
Check the operating conditions in your application before you activate the automatic
brake.
If no command record is executed in the specified time, for axes under load:
–
The current setpoint value is set to zero
–
The brake is engaged
–
The controller end stage is switched off.
Example
In this example, the activation time of the automatic brake starts to run after the completion of a posi-
tioning record (MC). After the activation time has expired, the brake is closed and the switch-off delay
runs simultaneously. After the switch-off delay has expired, the controller end stage is switched off
(less warming).
Содержание CMMP-AS-***-M3 Series
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