Rockwell Automation 1756-HYD02 ControlLogix Hydraulic Servo Module - Manual (Page 20)

20 Publication 1756-UM525A-EN-P - June 2003
Chapter 2 Installing the 1756-HYD02 Module
Wiring the Home Limit Switch Input
The home limit switch inputs to the servo module are designed for 24V
nominal operation. These inputs should be wired for current sourcing
operation.
Wiring the OK Contacts
A set of isolated solid- state OK relay contacts is provided for optional
interface to an E- stop string, which controls power to the associated pumps.
The OK contacts are rated to drive an external 24V pilot relay, for example,
Allen-Bradley 700-HA32Z24, whose contacts can be incorporated into the
E-Stop string.
From 1756-HYD02
HOME
IN_COM
+ –
43396
24V dc
Field Power
Supply
General cable
C0720
From 1756-HYD02
+OK
-OK
24V dc
Field Power
Supply
+ –
43397
OK Pilot
Relay
43398
OK Pilot
Relay
Contacts
Start
Stop
CR1
CR1
CR1
M1
24V AC/DC
or 120VAC
typical
General cable
C0720