HEIDENHAIN ND 522 Installation - Manual (Page 10)

10
ND 500
Installation Instructions
Complete Operating Instructions available at www.heidenhain.de
6. Installation
The safety of any system incorporating the use of this product is the
responsibility of the assembler or installer of the system.
Interfaces
Rear
1
Power switch
2
Power connector
3
Replaceable fuse holder
4
USB (type B) interface: for
PC communication
5
Encoder inputs: X1, X2, X3 axis for
linear and rotary « TTL interface
encoders. The number of axes varies
by product.
6
Earth (ground) terminal
see warning below
Power cord
L:
Line voltage (brown)
N: Neutral (blue)
Protective conductor (ground)
terminal(green/yellow)
3-conductor (grounded)
Min. cable cross section: 0.75 mm
2
Max. cable length: 3 m
Power cord
Notice
Do not engage, or disengage any connections while the product is under
power. Damage to internal components may result.
Notice
It is necessary to connect the earth (ground) terminal on the rear of the product
to the star point of machine ground. Minimum cross section of the connecting
wire: 6 mm
2
. Never use this equipment without proper grounding.
Electrical connection
Warning! Risk of electrical shock
A risk of electrical shock exists if this product is not properly grounded.
To avoid the hazard, always use a 3-conductor (grounded) power cord and
ensure the ground is properly wired to the building installation.
Warning! Risk of fire
A risk of fire exists if a power cord not meeting minimum specifications is
used.
To avoid the hazard, always use power cords that meet or exceed the minimum
listed specifications.
Connecting a power cord
To connect a power cord:
X X Verify that the power switch is in the off position.
X X Verify that the power cord is not plugged into the main power supply.
X X Insert the female end of the power cord into the power connector on the rear of the
product.