Emerson ROC364 Manuál s instrukcemi stáhnout pdf (Strana 17)

ROC364 Instruction Manual

Rev 5/00 6-13

6.5.4 Discrete Output Channels

Equipment Required: Multimeter

Personal Computer running ROCLINK Software

Place the Discrete Output in manual mode using the ROCLINK configuration software. Set the output

status to “0” and measure the resistance across terminals B and C. A reading of 0 ohms should be

obtained. Set the output status to “1” and measure the resistance across terminals B and C. No

continuity should be indicated.

6.5.5 Pulse Input Channels

Equipment Required: Pulse Generator

Voltage Generator

Frequency Counter

Jumper wire

For both types of channels, there are two methods of testing. One method tests high-speed operation,

and the other method tests low-speed operation.

NOTE

When checking the operation of the Pulse Input channels, ensure the scan rate for

the pulse input is once every 6.5 seconds or less as set by the ROCLINK software.

To verify high-speed operation, connect a pulse generator having sufficient output to drive the channel

to terminals B and C. Connect a frequency counter across terminals B and C. Set the pulse generator

to a value equal to, or less than 10 KHz, and set the frequency counter to count pulses. Verify the count

read by the counter and the count read by the ROC are the same using the ROCLINK software.

To verify low-speed operation, alternately jumper across terminals B and C. The channel LED should

cycle on and off, and the accumulated count should increase.

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Emerson ROC364 Manuál s instrukcemi Strana 17