Siemens SIMATIC ET 200pro - 10.4 Current limits

Setting functions
8.7 Application-specific functions
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
151
Commissioning a motor holding brake
DANGER
Danger to life due to falling loads
For applications such as lifting equipment, cranes or elevators, there is a danger to life if
the "Motor holding brake" function is incorrectly set.
• When commissioning the "Motor holding brake" function, secure any dangerous loads,
e.g. by applying the following measures:
– Lower the load down to the floor
–
Cordon off the hazardous area so that nobody can enter it
Precondition
The motor holding brake is connected to the inverter.
Procedure
Proceed as follows to commission the "Motor holding brake" function using an operator
panel.
1. Set p1215 = 1.
The "Motor holding brake" function" is enabled.
2. Check the magnetizing time p0346; the magnetizing time is pre-assigned during
commissioning and must be greater than zero.
3. Take the opening and closing times of the connected brake from the technical data for the
motor holding brake.
– Depending on the brake size, brake opening times lie between 25 ms and 500 ms.
– Depending on the brake size, brake closing times lie between 15 ms and 300 ms.
4. Set the following parameters in the inverter to match the opening and closing times of the
brake:
– Opening time ≤ p1216.
– Closing time ≤ p1217.
5. Switch on the motor.
6. Check the acceleration behavior of the drive immediately after the motor has been
switched on:
– If the brake opens too late, the inverter accelerates the motor against the closed brake
which results in a jerky motion.
In this case, increase the opening time p1216.
– After opening the brake, if the motor waits too long before it accelerates the motor,
then reduce the opening time p1216.