Emerson ROC827 Troubleshooting Analog Output Modules, Troubleshooting Discrete Input Modules

ROC827 Instruction Manual

9.Remove the test equipment.

6.3.4Troubleshooting Analog 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.

To calibrate the module:

1.Connect a multimeter between the + and – channel terminals of the module and set the multimeter to measure current in milliamps.

2.Connect to ROCLINK 800 software.

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

4.Select the correct Analog Output Point Number.

5.Select Scanning Manual and click Apply.

6.Set the output to the High Reading EU value.

7.Verify a 20 mA reading on the multimeter.

8.Set the output to the Low Reading EU value and click Apply.

9.Verify a 4 mA reading on the multimeter.

10.Calibrate the Low Reading EU value by increasing or decreasing the Adjusted D/A 0% units value.

11.Select Scanning Enabled and click Apply.

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

13.If possible, verify the correct operation of the AO module by setting the High Reading EU and Low Reading EU values as before (Scanning Disabled) and observing the field device.

6.3.5Troubleshooting Discrete Input Modules

Equipment Required:

ƒJumper wire

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.Disconnect the field wiring at the DI module terminations.

Issued Mar-06 Troubleshooting 6-7