Function
Connection point X6 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 Connectio
n
Signal name Function
1 MotTemp+ Motor temperature evaluation
input
2 MotTemp-
3 +24VBr Output for controlling the motor
holding brake
4 0VBr
Spring terminal (connector) Unit Min. Max.
Connection cable
Stranded wire
mm
2
0,25 1,5
AWG 24 16
Stripped length mm 10
Current carrying capacity of outputs X6 A - 1,25
Time constant of load ms - 50
Number of switching operations at
maximum time constant of load
Wear-free electronic contact
Switching frequency Hz - 0,5
Short circuit protection X6.3 against X6.4 (output for controlling the motor holding brake)
Overload protection X6.3 against X6.4 (output for controlling the motor holding brake)
Tab. 12-3: Function, pin assignment
Motor holding brake: selection
Maximum current carrying capacity of outputs X6: 1.25 A
⇒ R
br (min)
= U
br (max)
/ 1.25 A
R
br (min)
: Minimum allowed resistance of the motor holding brake
U
br (max)
: Maximum supply voltage of the motor holding brake
If U
br (max)
= 24 V +5% = 25.2 V, this results in:
R
br (min)
= 20.16 Ω (applicable to all operating and ambient conditions)
Motor holding brake: installation
instructions
Make sure the power supply for the motor holding brake at the motor is
sufficient. You have to take into account that voltage drops on the supply line.
Use connection lines with the highest possible cross section of the single
strands.
Use an external contact element in accordance with the required safety
category, if you wish to supply motor holding brakes with higher currents than
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
Bosch Rexroth AG 121/149
Project planning
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
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