Yokogawa digitalYEWFLO (DY) - Manual (Page 88)

MAINTENANCE
IM 1F2B4-01-YIA
Page 83
4.5.3 Pulse output test
Before beginning this section, perform the amplifier checkout procedure, steps a-d above.
a. Check the PULSE/ANALOG jumpers on the front of the amplifier to be sure they are in the
correct position (pulse). Access parameter B02 (OUTPUT) and confirm the setting agrees
with the jumper position. Access parameter C02 (PULSE RATE) and set it to “UNSC*1”.
b. With the frequency generator connected and injecting the frequency per Step 4.5.1b, connect
a frequency counter across the “-” and “P” output screw terminals.
c. Check to be sure the frequency counter reads the frequency specified in Step 4.5.1b above
(±0.1%).
d. Remove the frequency generator and replace it with a jumper. Check to be sure the
frequency counter reads 0 Hz.
e. If there is a discrepancy in the outputs measured in Steps c and d, contact the Yokogawa
Industrial Automation Service Department for assistance at 1-800-524-7378. Otherwise,
remove the jumper, return parameter H06 to “ACTIVE”, and return parameter C02 to your
required pulse rate setting. Testing is complete.