Operation Timing Of Sequence Control Signals - Allen-Bradley 8720MC-RPS065 User Manual

Chapter 5 Connect the 8720MC-RPS Unit
Operation Timing of
Sequence Control Signals
DC Bus Voltage
Main Magnetic
Contactor (MC)
PWR Input
RDY Output
68
The following timing diagrams describe the sequence of operations for
precharge, discharge, error detection, error resetting, and power loss.
Figure 33 - Sequence Operation of Precharging
DC Bus Voltage
Main Magnetic
On
Contactor (MC)
Off
On
PWR Input
Off
On
RST Input
Off
Open
RDY Output
Close
Open
FR Output
Close
Open
IP Output
Close
Figure 34 - Sequence Operation of Discharging
On
Off
On
Off
On
RST Input
Off
Open
Close
Open
FR Output
Close
Open
IP Output
Close
Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018