6.5.4 XG3, motor temperature monitoring and motor holding brake
Dangerous movements! Danger to persons
from falling or dropping axes!
The standard motor holding brake provided or an external motor holding
brake controlled directly by the drive controller are not sufficient on their own
to guarantee personal safety!
Personal safety must be achieved using higher-level, fail-safe measures:
● Block off danger zones with safety fences or safety guards
● Additionally secure vertical axes against falling or dropping after
switching off the motor power by, for example,
– mechanically securing the vertical axes
– adding external braking/arrester/clamping mechanisms
– ensuring sufficient equilibration of the vertical axes
Lethal electric shock from live parts with more
than 50 V!
The input of the motor temperature evaluation is not galvanically isolated
from the housing. Excess voltage at the input (e.g., by the motor winding
voltage flashing over) can get to the housing. Make sure that the temperature
sensor of the connected motor is double-insulated from the motor winding.
Risk of damage to device from excess
voltage at motor temperature evaluation
input!
Only the allowed control voltage for the device is allowed at the motor
temperature evaluation input. Excess voltage at the input can damage the
device.
Function
Connection point XG3 contains the connections for
● Monitoring the motor temperature
● Controlling the motor holding brake
Via an integrated contact element (BR), the power section
switches the voltage of the external 24 V supply to the output for
controlling the motor holding brake.
View Connection Signal name Function
1 MotTemp+ Motor temperature
evaluation input
2 MotTemp-
3 +24VBr Output for controlling the
motor holding brake
4 0VBr
Tab. 6-42: Pin assignment
192/407
Connection points
IndraDrive Mi Drive Systems with KCU02, KSM02,
KMS02/03, KMV03, KNK03, KLC03
Bosch Rexroth AG R911335703_Edition 04
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