Eaton IQ 200, Инструкция по установке, эксплуатации и обслуживанию

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TD 17558
Page 43
Effective 3/98
5.3 GENERAL TROUBLESHOOTING PROCEDURES
These procedures cover the IQ 200 only, and can only indicate or eliminate the
IQ 200 as a cause of the malfunction. Because these procedures are not
exhaustive, the user must be aware that other system components may be causing
or contributing to system malfunctions.
To use the following troubleshooting guide, first identify the symptom of the
malfunction in the first column. Then note the corresponding probable cause listed
in the second column. Attempt one or more of the corresponding possible solutions
in the third column. If following this general troubleshooting guide fails to correct the
malfunction, contact the plant maintenance department or contact Cutler-Hammer
Power Management Applications Support at 1-800-809-2772, option 1.
IQ 200 Troubleshooting Guide
Symptom
Probable Cause Possible Solution
One or more
voltage phases read
incorrectly
Incorrect PT ratio Check PT ratio using the View
Setpoints screen of the display module.
Adjust if incorrect using the edit
setpoints screen.
Incorrect or zero
current readings
Incorrect CT ratio Check CT ratio using the View
Setpoints screen of the display module.
Adjust if incorrect using the edit
setpoints screen.
Incorrect Power
readings
Incorrect phasing of
voltage and (or)
currents
Check phasing and verify connections
with wiring diagrams.
Unit fails to
communicate over
IMPACC network
Wrong or conflicting
address set for
IQ 200
Incorrect baud rate
set for the IQ 200
Communication
wiring error
Check the address of the IQ 200 base
unit via a display module and verify that
the software is addressing the proper
unit.
Check the baud rate set for the base
unit via a display module and verify that
it is the same as the system rate.
Verify that wiring conforms to IMPACC
wiring base rules. (see TD 17513)
Display module
LCD screen is blank
Contrast is set too
low
Power to display
module is absent
Press and hold the ENTER button the
press and hold the “down” scroll button
to adjust the contrast.
Check Category 5 cable connection to
display module and base unit. Check
control power fuses, wiring connections,
and voltage level.