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Drive system ok relay specifications, Drive system ok relay specifications -18 – Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System Installation Manual User Manual

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Publication 1394-IN002B-EN-P — February 2004

2-18

1394 SERCOS Interface Connector Data

Drive System OK Relay Specifications

The Drive System OK output is intended to be wired into the drive’s
start/stop string to open the main power contactor if a drive system
fault occurs. This configuration will cause the Drive System OK
contacts to close after 24V logic power is applied and no system faults
are detected. It is capable of handling 120V ac at 1A or less. An active
state indicates the drive is operational and does not have a fault.

Figure 2.12
Drive System OK Relay

The following table provides a description of the relay output
specifications.

DRIVE SYSTEM OK_1

DRIVE SYSTEM OK_2

Normally

Open

Relay

1394 System Module

Parameter

Description

Minimum

Maximum

ON State
Current

Current flow when the relay is closed

1A

ON State
Resistance

Contact resistance when the relay is closed

1

OFF State
Voltage

Voltage across the contacts when the relay is open

120V ac

24V dc

Maximum switched load

1A Inductive