Bosch Rexroth CS351 Operating Instructions Manual page 62

62/96 Bosch Rexroth AG
Product description
X D N 1
1 2 3 4
Fig. 7: XDN1
Tab.6: XDN1 assignment
Signal as- Descrip-tion/
Pin
signment function
1 VEE NH1 motor off 2
supply voltage
2 NH1 motor off 1
return (motor
contactor)
3 VEE NH2 motor off 2
supply voltage
4 NH2 motor off 2
return (end
step)
Boundary conditions:
• The maximum cable length for the motor OFF
circuit is 30 m.
• Always design the motor OFF circuits
separately and with potentialfree contacts. Do
not mix up the motor OFF circuits under 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
•
connection option, we recommend
implementing the motor OFF function via motor
OFF circuit NH1 (see Fig. 8, page 63).
The maximum torque at the bolted
connections of the terminals at
XDN1 must not exceed 0.3 Nm.
CS351/CC-CS351 | 3 609 929 B45-12
Risk of damage to persons and property!
The user is obliged to maintain the

systemspecific requirements for an
emergency OFF system.
When using external power supply

contactors in higher-level emergency OFF
circuits, observe the restarting time of 10
Voltage/
seconds for single switching and 30
current
seconds for repeated switching.
24 V/0.3 A
Check that the emergency OFF circuits

are functioning properly before
24 V/0.1A
commissioning the tightening system.
Observe the local, systemspecific

regulations and requirements; proper use
24 V/0.3 A
of tools, lifting, and transport equipment;
as well as the pertinent standards,
24 V/0.1A
provisions, and occupational safety
regulations.
Risk of damage to persons and property!
Dangerous shock currents due to
inadequate PE wire connections!
Protective conductor connections must

not be affected by mechanical, chemical,
or electrochemical influences. The
connection must be permanent.
NOTE
The voltage circuits at terminal XDN1 are

safely isolated from the power supply
circuits (safe isolation in accordance with
EN50178). The requirements for safe
isolation of electric circuits must be
observed when using the connection
options on this terminal.
CAUTION
CAUTION