- 3 -
MC-612 Regulator Layout
1.
Magnetic Reed Switch -
Activated by placing
magnetic tip of programming tool against one or
the other end. See illustration in “Programming”
section later in this manual.
2. Positive Sense Wire -
Connects to independent
fused wire included with regulator. Wire must
see battery voltage directly for proper operation.
See details in text.
3.
Ground (Independent) -
Connects to individual
ground (BLACK) wire in wiring harness. Pre-
connected at factory in regulator packages with
harness included.
4.
Ground (BLACK) -
Included in Ford-style plug.
5.
Power (RED) -
Supplies power to operate the
regulator and delivers field current to excite
alternator. Included in Ford-style plug.
6.
Ignition (BROWN) -
Serves as “ON/OFF switch”
for regulator. Must see zero volts when enging
ignition is off and battery voltage when the igni-
tion is on. May also be activated by an oil pres-
sure switch. Included in Ford-style plug.
7.
Field (BLUE) -
Supplies amperage to the alter-
nators brushes to excite the regulator. The regu-
lator will increase or decrease voltage/amperage
on the field to maximize charging without
exceeding safe operating voltages. Included in
Ford-style plug.
8.
Digital Numeric Display -
Three-digit numeric dis-
play provides an easy-to-use interface for operational
and programming modes.
9.
Stator Input -
Connects (WHITE) stator input from
alternator to tach output to electric tachometer.
When the tachometer is connected to the alternator
via the regulator’s Stator Input and Tach Output
(#10), the regulator will automatically enable a min-
imum field current value, which will minimize tach
bounce when the batteries reach full charge.
10. Tach Out -
Connects alternator stator output to an
electric tachometer via the regulator. See informa-
tion above.
11. Data RX -
Not currently used. Provides input connec-
tion for planned remote display.
12. Data TX -
Not currently used. Provides output con-
nection for planned remote display.
13. Alternator Temperature Sensor -
Positive and nega-
tive terminal pins for use with optional Alternator
Temperature Sensor (MC-TS-A). When connected,
the temperature sensing function allows the regula-
tor to respond to over-temperature conditions at the
alternator by reducing field output to the alternator.
Reducing field output reduces load on alternator and
belts, allowing the alternator to cool down. In addi-
tion, the regulator activates the Dash Lamp terminal
(#17) so a warning lamp or audible alarm can be
used to indicate an over-temperature condition.
14. Battery #2 Temperature Sensor -
Indicates over-
temperature condition at secondary battery bank,
when used with optional Battery Temperature
Sensor (MC-TS-B). Regulator discontinues field cur-
rent to the alternator when high battery temperature
is sensed. Activates Dash Lamp (#17) when condi-
tion is indicated.
15. Battery #1 Temperature Sensor -
Automatically
compensates for changes in ambient battery temper-
ature when used with optional Battery Temperature
Sensor (MC-TS-B). Regulator discontinues field cur-
rent to the alternator when high battery temperature
is sensed. Activates Dash Lamp (#17) when condi-
tion is indicated.
16. Aux. 1 Output -
Terminal goes to ground when the
following conditions occur: alternator output at full
capacity, Small Engine Mode activated, Equalization
Mode activated. Can be connected to ground side of
lamp or audible alert device.
17. Dash Lamp -
Terminal goes to ground when the fol-
lowing conditions occur: low system voltage, high
system voltage, high alternator temperature, high
battery temperature. Can be connected to ground
side of lamp or audible alert device.
Summary of Contents for Max Charge MC-612
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