Bosch Rexroth Tightening System 350, Manual

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94 /641 Bosch Rexroth AG | Tightening Technology 3 608 878 300
System 350 | 3 608 878 300/2019-03
Motor-breaker circuit with ErgoSpin or tightening spindle
Cut-out via the internal motor contactors
After a cut-out via the motor contactor, the motor phases are electromechanically isolated from the power
supply.
Fig. 4–20: Connection motor breaker circuit 1 (NH1) to the compact system
Motor-breaker switch connected directly to the contacts fro motor breaker
If the S1 motor breaker switch is actuated, the motor of the hand-held nutrunner/tightening spindle will
be decelerated by the servo amplifier and the internal contactor in the compact system will be opened.
This tightening job abort leads to an error message in the controller. The system can restart after switch
S1 has been closed.
Cut-out via the end step
In addition, the motor breaker can be switched via the end step or together with the cut-out via the motor
contactors (double protection).
Fig. 4–21: Connection motor breaker circuit 2 (NH2) to the compact system
Actuating the S1 motor-breaker switch switches off the end step. The motor coasts down, but is not
decelerated.
XDN1
1 2 3 4
S1
1 mm
2
NH1
VEE NH1
Use
emergency OFF switch
direct
XDN1
1 2 3 4
S1
1 mm
2
VEE NH2
NH2
Use
emergency OFF switch
direct