Bosch Rexroth IndraDrive Series Applications Manual page 124

Integrated safety technology 'safe torque off' (as of mpx-16)
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DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
Function
View
Spring terminal (connector)
Connection cable
Stranded wire
Stripped length
Current carrying capacity of outputs X6
Time constant of load
Number of switching operations at
maximum time constant of load
Switching frequency
Short circuit protection
Overload protection
Motor holding brake: selection
Motor holding brake: installation
instructions
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
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.
Connectio
Signal name
n
1
2
3
4
Unit
mm
2
AWG
mm
A
ms
Hz
X6.3 against X6.4 (output for controlling the motor holding brake)
X6.3 against X6.4 (output for controlling the motor holding brake)
Tab. 12-3:
Function, pin assignment
Maximum current carrying capacity of outputs X6: 1.25 A
⇒ R
= U
/ 1.25 A
br (min)
br (max)
R
: Minimum allowed resistance of the motor holding brake
br (min)
U
: Maximum supply voltage of the motor holding brake
br (max)
If U
= 24 V +5% = 25.2 V, this results in:
br (max)
R
= 20.16 Ω (applicable to all operating and ambient conditions)
br (min)
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
Bosch Rexroth AG
MotTemp+
Motor temperature evaluation
MotTemp-
+24VBr
Output for controlling the motor
0VBr
Min.
0,25
24
10
-
-
Wear-free electronic contact
-
121/149
Project planning
Function
input
holding brake
Max.
1,5
16
1,25
50
0,5
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