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Function codes
Refer to
for a numerical listing of the function codes. The table accurately represents the display of each function
code and identifies the security level for read, edit, and reset, the factory setting, and the low and high limits for keyed in
entries. This is followed by a description and, where appropriate, a list of scrolling choices, examples, and related functions
and features for each function code.
Table 10 . Function codes
Parameter
Unit of
Measure
Security Level
Default Value
Key Entry Limit
To Read
To Write
To Reset
Low
High
000 Total
Operations
XXXXXX
---
View
Admin
NA
0
0
999999
•On an Eaton's Cooper Power series voltage regulator, the total operations counter is
activated by detecting tap-changer motor operation, which is determined by sensing current
flow in the holding switch circuit.
•It may also be incremented through operations counter circuitry on non-Eaton's Cooper
Power series manufactured tap changers.
•The total operations counter is written into non-volatile memory after every count.
•Access other operations counters at FC 100–FC 107.
001 Forward
Set Voltage
XXX.X Volts
Volts
View
Modify
NA
120.0
100.0
135.0
•The forward set voltage is the voltage level to which the control will regulate, on the
120 V or 240 V base, during forward power flow.
•If an alternate configuration is active, the fourth LCD line displays which one is active,
e.g. (ALT CONFIG 1).
•If FC 148 Nominal Load Voltage is set to 240 Volts, limits are expanded (doubled).
•If FC 148 is set to System Line Voltage, this setting must be set in terms of the system
line voltage. For example, on a 7200 V system, with a desired set voltage 1% above the
nominal voltage, the setting would be 7272.
002 Forward
Bandwidth
X.X Volts
Volts/%
View
Modify
NA
2.0
1.0
6.0
•The bandwidth is defined as the total voltage range, around the set voltage, which the
control will consider as a satisfied (in-band) condition, during forward power flow.
•Example: A bandwidth of 3.0 V and a set voltage of 120 V will establish a low edge of
118.5 V and a high edge of 121.5 V.
•If an alternate configuration is active, the fourth LCD line displays which one is active,
e.g. (ALT CONFIG 1).
•If FC 148 Nominal Load Voltage is set to 240 Volts, limits are expanded (doubled).
•If FC 148 is set to System Line Voltage, this setting must be set as a percentage of the
set voltage.
003 Forward
Time Delay
XXX Seconds
Seconds
View
Modify
NA
45
5
180
•The time delay is the period of time that the control waits, from when the voltage first
goes out-of-band to when a tap change is initiated, during forward power flow.
•If an alternate configuration is active, the fourth LCD line displays which one is active,
e.g. (ALT CONFIG 1).
47
INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS
MN225003EN April 2018
CL-7 Voltage Regulator Control