Generac Power Systems R-200A User Manual

  

11

 Pin  #
  1 

Governor 12V Supply

 2   

Reserved (Do not connect any wires to this 
pin.)

  3 

GND-B to Governor Driver

 4  Hi-Coolant 

Temp 

Input

  5 

0V to Governor Driver

  6 

5V Supply to Governor Driver

  7 

Distributor (Hall Sensor) 12V Sensor Supply

  8 

Low Coolant Level Input

  9 

Crank Signal Input

  10  Crank Signal Return
  11  Low Fuel Pressure Input
  12  Governor Position Feedback Input
 13   

Reserved (Do not connect any wires to this 
pin.)

  14  Coil + (Supply voltage to engine coil pack.)
  15  Coil A Driver
  16  2.4L Distributor Sensor Return
  17  2.4L Distributor Sensor Input
  18  Governor PWM Output
  19  Governor Enable Output
  20  Lo Oil Pressure Input
  21  2.4L Flywheel Sensor Screen
  22  Coil C Driver
  23  Coil B Driver

 Pin  #
 1  Reserved
 2   

Start (Crank) Relay Driver Output (minimum 
coil resistance is 90 ohms)

 3   

Fuel (Run) Relay Driver Output (minimum 
coil resistance is 90 ohms)

 4   

2-wire Start Input (from relay contact in W- 
type transfer switch)

  5 

Momentary Open Switch Input (B+)

 6   

2-wire Start Return (from relay contact in W-
type transfer switch)

 7  Manual/Auto 

Input 

(+BS)

  8 

19.5VAC Utility Sense Input

 9  Reserved
 10   

Transfer Switch Relay Driver Output (mini-
mum coil resistance is 60 ohms)

 11  Manual Input
  12  19.5VAC Utility Sense Return
 13  Reserved
  14  GND-B (Battery Ground)

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

There are two types of battery chargers. A 2 Amp bat-
tery charger and a 10 Amp battery charger.

The 2 Amp battery charger is a "float" type charger. A 
"float" type charger will charge the battery at its maxi-
mum output current rating until the battery voltage 
reaches a "float" voltage and then the charge current 
will decrease to maintain the battery at that "float" 
voltage.

The 10 Amp battery charger is an "equalize" type 
charger. An "equalize" type charger will charge the 
battery at its maximum output current rating until 
the battery voltage reaches an "equalize" voltage and 
then the charge current will decrease to maintain the 
battery at a lower "float" voltage.

The 2 Amp charger incorporates fuses on both the 
input AC line and the battery charger output. The 
input AC line fuse is a Littelfuse 2 Amp, Slo-Blo Fuse, 
5x20mm, P/N 218002. The AC line fuse is located on 
the charger printed-circuit board. The output DC bat-
tery fuse is a Littelfuse 5 Amp, Mini-Blade Fuse, P/N 
297005. The battery fuse is located on the charger 
printed-circuit board.

The 10 Amp charger incorporates fuses on both the 
input ac line and the battery charger output. The 
input AC line fuse is a Littelfuse 5 Amp, Slo-Blo Fuse, 
5x20mm, P/N 218005. The AC line fuse is located 
on the charger printed-circuit board. The output DC 
battery fuse is a Littelfuse 15 Amp, ATO Fuse, P/N 
257015. The battery fuse is located on the charger 
printed-circuit board.

These chargers require that the battery be connected 
to the charger in order to turn on. The battery voltage 
must also be above a certain "boost" voltage for the 
charger to turn-on.

The boost voltage required is approximately 11 volts 
for a 12V system. If the battery open-circuit voltage is 
less than the above boost voltage, it is recommended 
that the battery be checked.

If the voltage of the generator's 12V battery exceeds 
15VDC, during normal charging operation, the bat-
tery should be checked. Typical battery voltages, 
when a 12V battery is being charged, should be in the 
13VDC to 15VDC range.

The 2 Amp and 10 Amp chargers are UL recognized 
for use in the R-panel enclosure and are not to be 
operated outside the R-panel enclosure.