Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System Installation Manual - Manual (Page 51)

Publication 1394-IN002B-EN-P — February 2004
1394 SERCOS Interface Connector Data 2-19
Motor Brake Relay Specifications
The connections are rated for +24V, 1A operation. An active signal
releases the motor brake. The brake signal uses the turn-on and
turn-off delays specified by the brake active delay and brake inactive
delay. The delay times are software configurable in RSLogix 5000. For
the list of motors rated for 1A operation, the delay times and example
diagram, refer to Brake Interconnect Diagrams on page B-15.
Figure 2.13
Relay Outputs
The following table provides a description of the relay output
specifications.
Refer to Brake Interconnect Diagrams beginning on page B-14 for
wiring examples.
IMPORTANT
For motors requiring more than 1A, a relay must be
added. For the list of motors rated at greater than 1A
operation, the delay times and example diagram,
refer to Brake Interconnect Diagrams on page B-16.
3
Axis 3
4
5
Axis 2
6
7
Axis 1
8
9
Axis 0
10
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
Ω
OFF State
Voltage
Voltage across the contacts when the relay is open — 30V
Maximum switched load — 1A Inductive