Allen-Bradley 1407-CGCM-DLR, Руководство пользователя, Страница: 170 / 268

170 Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Chapter 7 Troubleshooting
Table 27 - Limiting Modes - OEL
Symptom Most Likely Cause Diagnostic Action Corrective Action
Excitation Current exceeds the
programmed OEL limit (OEL does not
limit/activate) OEL not enabled Check tag OEL_En and configuration Correct logic or configuration
as required
OEL Gain misadjusted Force into OEL Adjust gains as required
OEL not configured Check OEL settings against generator
excitation requirements / limits Correct as required
Metering error See Metering troubleshooting
Table 30
See Metering troubleshooting
Table 30
Excitation is unstable when OEL is
active OEL Gain misadjusted Force into OEL Adjust gains as required
Table 28 - Real Power Load Sharing
Symptom Most Likely Cause Diagnostic Action Corrective Action
Units do not share load Load share lines not properly
connected Measure voltage at each LS+/-
terminal. Verify that voltage is
PU load Reconnect LS lines
Open LS terminals; apply a load,
measure LS voltage.
Voltage equals (kW/Rated
kW)*LSFSVoltage If Voltage is not correct, replace
CGCM-DLR unit after you verify
configuration settings
Load sharing not enabled Check output tag kW_LS_EN is
set and input tag
kW_LS_ACTIVE is true If Loadsharing must be disabled no
anomaly is present, otherwise correct
loadsharing logic for tag kW_LS_En
CGCM-DLR unit is not properly
configured Check configuration parameters
are properly set. See
Load Share
Page , Chapter 4
Input correct configuration
parameters
Wiring errors cause CGCM-DLR unit
to not meter kW properly Check kW indication from
CGCM-DLR unit against second
meter for accurate kW indication Correct wiring errors
Governor does not respond to load
share error Observe that load share error is
being received from CGCM-DLR
unit in host controller Correct anomaly in Host controller if a
valid load share error is received
Units do not share load equally: one
unit increases the other unit
decreases Load share lines are connected with
polarity reversed Observe that load share error is
being received from CGCM-DLR
unit in host controller and error
polarity is correct Correct polarity on LS lines
Units do not share load equally: units
both change together Load share full-scale voltage
configurations do not match Check full load voltage
configuration in each load share
device Set full load voltage same in all load
share devices
Governor error Check governor for use of LS
error from CGCM-DLR unit Correct governor