HEIDENHAIN 681046 Series Operating Instructions Manual page 6

Amplifier for servo motors
Operating Instructions
Interface connections
Warning! Risk of personal injury or death
A risk of personal injury or death exists if Limit Enable inputs are not properly
connected. Limit Enable inputs are available on the Axis Motor connector and
the Limit Switch connector.
To avoid the hazard use only one pair of Limit Enable inputs per axis. Never use
the Limit Enable inputs from both connectors. If both are used, limit switch
function is severely impaired.
Notice
This product contains components that can be damaged by electrostatic
discharge (ESD). Observe precautions for handling ESD sensitive devices and
never touch connector pins unless properly grounded.
Notice
Do not overtighten interface cable connection screws to avoid damage to the
product.
Connecting an axis motor cable
This product provides interface connections for axis motor input/output. A label is provided
near each connector.
To connect an axis motor cable:
Verify that the power switch is in the off position
X X
Connect the cable to it's connector
X X
Tighten the cable connector screws until they are snug
X X
Pin Signal Description
1 GND Power supply return. Connect to system ground at this pin.
2 Motor + Amplifier output to motor (+) winding
3 Motor - Amplifier output to motor (-) winding
4 Tach - Negative terminal of brush tachometer
5 GND / Tach + Signal ground, or positive terminal of brush tachometer
6 Limit GND to enable output current in one polarity, open or DC 5 V
/Pos Enab to inhibit. Typically used with grounded, normally closed limit
switches.
7 Limit GND to enable output current in opposite polarity, open or DC 5 V
/Neg Enab to inhibit. Typically used with grounded, normally closed limit
switches.
8 Limit Signal ground
GND
6
Observe ESD handling precautions
A
1 2 3 4 5 6 7 8
Axis motor connector