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ROC800-Series Instruction Manual

6-14

Inputs and Outputs

Revised Jul-14

8.

Finally, connect a thermocouple of the same type directly to the

ROC800. If it reads correctly, the problem is likely to be in the wiring

to the field or may be related to a ground loop.

6.3.11Troubleshooting Advanced Pulse Modules

Equipment Required

:

Pulse Generator

Voltage Generator

Frequency Counter

Jumper wire

PC 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 verify high-speed operation:

1.

Disconnect the field wiring at the APM module terminations.

2.

Connect to ROCLINK 800 software.

3.

Select

Configure

>

I/O

>

Advanced Pulse Module

. The Advanced

Pulse Module screen displays.

4.

Select the correct Pulse Input Point Number.

5.

Connect a pulse generator having sufficient output to drive the

module to terminals PI1 through PI4 and COM. The pulse generator

must synthesize a square wave signal of 50% for every cycle.

6.

Connect a frequency counter across terminals PI1 through PI4 and

COM.

7.

Set the pulse generator to a value equal to, or less than 10 kHz.

8.

Set the frequency counter to count pulses.

9.

Verify (using ROCLINK 800 software) that the count read by the

counter and the ROC800 are the same.

10.

Remove the test equipment and reconnect the field device.

6.3.12Network Radio Modules

To verify connectivity of the Network Radio Module:

1.

Check the module status and LEDs if you are already configured and

joined to a network.

2.

Verify COM status for the commissioned devices by looking at the

RL800 RTU commission list.