Emerson ROC827 Troubleshooting Discrete Output Modules, Select Configuration I/O DI Points

ROC827 Instruction Manual

2.Connect to ROCLINK 800 software.

3.Select Configuration > I/O > DI Points.

4.Select the correct Discrete Input Point Number.

5.Place a jumper across a channel input terminal (1-8) and COM.

6.The Status should change to On. With no jumper on the channel terminal and COM, the Status should change to Off.

7.Remove the test equipment, and reconnect the field device.

6.3.6Troubleshooting Discrete Output Modules

Equipment Required:

ƒMultimeter

ƒPC running ROCLINK 800 software

Caution	Failure to exercise proper electrostatic discharge precautions, such as
	wearing a grounded wrist strap may reset the processor or damage
	electronic components, resulting in interrupted operations.

1.Verify the load current requirement does not exceed the current limit value of the module.

2.Verify the module is wired correctly.

3.Remove all wiring from the DO module.

4.Connect the multimeter set up to measure ohms to the channel that you are testing.

5.Measure the resistance with the DO Status OFF. It should be over 2 megohms.

6.Measure the resistance with the DO Status ON. It should be approximately 1 ohm.

6.3.7Troubleshooting Discrete Output Relay Modules

Equipment Required:

ƒMultimeter

ƒPC running ROCLINK 800 software

Caution	Failure to exercise proper electrostatic discharge precautions, such as
	wearing a grounded wrist strap may reset the processor or damage
	electronic components, resulting in interrupted operations.

1.Connect the multimeter set up to measure ohms to the channel that you are testing.

2.Set the Status to On and click Apply.

Issued Mar-06 Troubleshooting 6-8