Bosch Rexroth CS351 - Motor OFF Interface (XDN1)

70/108 Bosch Rexroth AG CS351 | 3609929B45/2014-09
Product description
1 motor OFF interface XDN1
Two independent motor stop circuits are
available:
• motor off circuit 1 (NH1) is implemented
via a contactor installed in the Compact
System. This separates the motor from
the servo amplifier (motor is braked).
• motor off circuit 2 (NH2) prevents the de-
velopment of a motor rotating field (motor
is not braked).
Both connections are bridged in the deli-
very state.
Fig. 7: Delivery state with bridged motor off
circuits (NH1 and NH2)
Fig. 8: XDN1
Boundary conditions:
• The maximum cable length for the motor
OFF circuit is 30 m.
• Always design the motor OFF circuits se-
parately and with potential-free contacts.
Do not mix up the motor OFF circuits un-
der any circumstances.
• Both motor OFF interfaces must be led
back. If only one is used, the other one
must be provided with a wire jumper.
• If you are only using one motor OFF con-
nection option, we recommend imple-
menting the motor OFF function via motor
OFF circuit NH1 (see Fig. 9, page 72).
CAUTION
Risk of damage to persons and pro-
perty!
 Make sure the emergency OFF equip-
ment is accessible and effective. Re-
leasing the emergency OFF equip-
ment must not result in an
uncontrolled system restart!!
The motor off interface is used to
integrate the tightening control-
ler into an emergency stop me-
chanism. For information about
the category and performance
level of the motor off interface,
refer to the technical information
TIe_197 or the project planning
manual.
NH1
NH2
Tab.5: XDN1 assignment
Pin
Signal as-
signment
Descrip-tion/
function
Voltage/
current
1 VEE NH1 motor off 2
supply voltage
24 V/0.3 A
2NH1 motor off 1 re-
turn (motor con-
tactor)
24 V/0.1A
3 VEE NH2 motor off 2
supply voltage
24 V/0.3 A
4NH2 motor off 2 re-
turn (end step)
24 V/0.1A
XDN1
1
23
4
CS351_zweispaltig - D.book Seite 70 Donnerstag, 2. Oktober 2014 8:36 08