Functions
8.9 Application-specific functions
SINAMICS G110M Operating Instructions
222 Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
p0219
Braking power of the braking resistor
(factory setting: 0 kW)
Set the braking power of the braking resistor.
: In
your particular application, the motor brakes every 10 seconds. In so doing,
the braking resistor must handle a braking power of 1 kW for 2 s. Use a braking resistor
with a continuous rating of 1 kW × 2 s / 10 s = 0.2 kW, and set the maximum braking
power to: p0219 = 1 (kW).
Under certain circumstances, for low braking power ratings, the inverter extends the
ramp-down time of the motor.
For p0219 > 0, the inverter deactivates the VDC_max controller.
p0844
No coast down/coast down (OFF2) signal source 1
p0844 = 722.x Monitor the overtemperature of the braking resistor with digital input x
The motor holding brake holds the motor in position when it is switched off. If the setting is
correct, the motor will produce an electrical holding torque before the inverter opens the
brake. The inverter does not close the motor holding brake until the motor is at a standstill.
Connecting the motor holding brake
The Motor Holding Brake (MHB) function of the Control Units comprise dedicated hardware
and software to control the actions of the MHB on the motor which is connected to the
Inverter.
The MHB is connected to the Inverter using the EMB- and EMB+ terminals of the mains
connectors in the Control Unit housing. The Power Module must be removed to access
these terminals.
When the motor holding brake is connected to the Inverter , 180 V DC (at 400 VAC mains
voltage) is supplied to the motor holding brake and the software within the Inverter monitors
the correct functioning of the brake.
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