Rockwell-automation 1746-HSRV SLC Servo Control Module User Manual Manual do Utilizador descarregar pdf (Página 49)

Publication 1746-6.1.2 - July 2000

5-6

Wiring the SLC Servo Module

backplane input. Though the exact position of home is not important,

it is important that the home position is:

• A repeatable resting place for the axis when it is not used.

• Free of obstruction from another moving axis.

To connect a home limit switch:

1. Place the limit switch near the home position that you want.

2. Adjust the encoder so that the marker is approximately 1/2

revolution from the limit switch closure.

Wiring Estop Connections

The SLC Servo Module detects and controls Estop conditions. Each

SLC Servo Module has a separate and independent Estop circuit. Refer

to the documentation that came with your drive for recommendations

on correctly wiring your external Estop string.

A hardware Estop is caused by the following:

• Broken wire in the user power cable.

• Power-fail signal from chassis backplane.

• Watch-dog time-out on SLC Servo Module.

• Software Estop conditions.

• A contact in the external Estop string or a broken/missing wire

opens the string (e.g., when someone pushes the Estop push

button).

Specifications for Estop relay on the SLC Servo Module appear in the

table below.

IMPORTANT

If you do not adjust the encoder, home can be off by

one encoder revolution.

Specification Rating

Maximum contact voltage rating 80V DC max

Operate time 500µs average

Contact bounce less than 200µs average

Contact resistance 150 milliohms average

Contact rating 5.0VA @ 0.35A max

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Rockwell-automation 1746-HSRV SLC Servo Control Module User Manual Manual do Utilizador Página 49