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
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 [email protected] (+34) 960 62 43 01
