Regulator Display Modes
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Basic Display/Long Display
The regulator’s three digit alphanumeric LED display provides a scrolling view of charging status. Under normal operation,
the display will indicate the following:
Indicates Max Charge MC-612-DUAL.
Indicates regulator’s default Universal Factory Program. Display will vary based on program selected.
Indicates the regulator’s Belt Load Manager setting. Ranges from b-0 to b-7.
Indicates stage of charge. “b” indicates bulk. “A” indicates absorption. “F” indicates float.
Indicates “real time” battery system voltage. Followed by actual voltage reading.
Indicates Calculated voltage (target voltage based on preset program levels). Followed by voltage reading.
Indicates Battery #1 temperature. Followed by NC (not connected), or temperature in celsius.
Indicates Alternator #1 temperature. Followed by NC (not connected), or temperature in celsius.
Indicates Battery #2 temperature. Followed by NC (not connected), or temperature in celsius.
Indicates Alternator #2 temperature. Followed by NC (not connected), or temperature in celsius.
* Alt. #2 or Bat. #2 Temperature Sensing are user selectable. One or the other will be shown in the regulator display.
In addition to the information provided in the basic display shown above, the MC-612-DUAL long display provides the fol-
lowing data. The long display is accessed during basic programming, which will be discussed in the next section of the
manual.
Indicates the percentage of field output to the alternator. The higher the percentage, the greater the output.
Indicates regulator’s software revision code.
Indicates temperature setpoint for ambient alternator and battery temperatures. Followed by degrees celsius.
Indicates, in millivolts, the voltage value used to control voltage compensation for battery temperature.
Indicates overall regulator hours. Followed by hours (by tenths) and hours in excess of 100.
Indicates field threshold from bulk to absorption. Factory set at 65%. Adjust in advanced programming mode.
Indicates field threshold from float to absorption. Factory set at 65%. Adjust in advanced programming mode.
Indicates system advisory codes. Individually numbered codes are defined below.
The following advisory codes can be used to determine possible system errors or to identify specific operational modes.
Note that E codes are cumulative and will be held in memory until cleared. Codes can be by cycling from LD to SD in the
basic programming mode, and back to LD after the SD mode has been saved. See basic programming for more info.
BATTERY #1 TEMP. SENSOR
CABLE SHORTED
BATTERY #1 TEMP. SENSOR
CABLE OPEN OR NOT FOUND
BATTERY #2 TEMP. SENSOR
CABLE SHORTED
BATTERY #2 TEMP. SENSOR
CABLE OPEN OR NOT FOUND
ALTERNATOR #1 TEMP. SENSOR
CABLE SHORTED
ALTERNATOR #1 TEMP. SENSOR
CABLE OPEN OR NOT FOUND
ALTERNATOR #2 TEMP. SENSOR
CABLE SHORTED
ALTERNATOR #2 TEMP. SENSOR
CABLE OPEN OR NOT FOUND
BATTERY #1 TOO HOT. OVER
52˚C. FACTORY DEFAULT
BATTERY #2 TOO HOT. OVER
52˚C. FACTORY DEFAULT
ALTERNATOR #1 TOO HOT.
OVER 108˚C
ALTERNATOR #2 TOO HOT.
OVER 108˚C
VOLTAGE REGULATOR TOO
HOT. OVER 90˚C
BATTERY SENSE WIRE OPEN
OR NOT FOUND
BATTERY #1 TOO HOT. OVER
USER ADJUSTED VALUE
BATTERY #2 TOO HOT. OVER
USER ADJUSTED VALUE
FIELD VOLTAGE TOO HIGH
STATOR VOLTAGE TOO HIGH
SMALL ENGINE MODE IS IN
OPERATION
BATTERY #2 TEMPERATURE
SENSE MODE
ALTERNATOR #2 TEMPERATURE
SENSE MODE
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