Rockwell Automation 193-EDN E1Plus Overload Relays - DeviceNet Module - Manual (Page 45)

Publication 193-UM006A-EN-P – October 2005
Troubleshooting 5-5
Input and Output
Troubleshooting
Procedures
ATTENTION
If the outputs are to be commanded via an explicit
message, ensure that there can never be an established I/O
connection that can actively control them, and that the
explicit message connection has a non-zero expected
packet rate (EPR) setting.
Table 5.2 Input and Output Troubleshooting Procedures
Failure Type Failure Description Corrective Action
Input 1, 2 Input 1 or 2 does not
appear to recognize a
contact closure 1. Check the supply voltage on the DeviceNet connector.
2. If the applicable contact closed but the E1 Plus DeviceNet Module Input does not
recognize the closure, check the continuity and wiring to the connected contact.
3. Check the IN 1 and 2 status LEDs. If the appropriate LED does not illuminate,
measure the voltage across and current through the applicable input. Verify they
are within the ratings of the E1 Plus DeviceNet Module (See Appendix A).
4. If the appropriate Input LED does illuminate, but the input status is not reported
properly over the DeviceNet network, check the programmable controller ladder
logic and I/O mapping.
Input 1, 2 Trip reset operation Check the programming of Parameter 40, IN1 Assignment or Parameter 41, IN2
Assignment.