Installation manual

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 — 1Ω
OFF State
Voltage
Voltage across the contacts when the relay is open —
120V ac
24V dc
Maximum switched load — 1A Inductive