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Kohler MPAC 1000 Generator Set

Kohler MPAC 1000 generator set: . Specifications, engine details, filters, oil capacity and 3 document types.

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Document types

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On this pageSpecsDocumentsFault codesProceduresWiring

Specifications

Ratings spec sheet not in our library yet — see the documents below.

Fault codes

80
CodeNameMeaningSeverityAction
0No faults presentDecision-Maker 3+ Shutdown Fault CodeInfo
0/0/0/0No errorDecision-Maker 8000 Error List
0/0/1/6Illegal accessRead (write) of the communication object. Object intended only for write (read).
0/0/2/6Comm. Object nonexistentDecision-Maker 8000 Error List
1Master switch not in auto (warning)Decision-Maker 3+ Shutdown Fault CodeWarning
10Low coolant temperature (warning)Decision-Maker 3+ Shutdown Fault CodeWarning
100Genset S/N Mismatch WarningDecision-Maker 550/6000 System Event CodeWarning
101Genset S/N Mismatch ShutdownDecision-Maker 550/6000 System Event CodeShutdown
103Protective Relay OvervoltageDecision-Maker 550/6000 System Event Code
104Protective Relay Under VoltageDecision-Maker 550/6000 System Event Code
105Protective Relay OverfrequencyDecision-Maker 550/6000 System Event Code
106Protective Relay UnderfrequencyDecision-Maker 550/6000 System Event Code
107Protective Relay Reverse PowerDecision-Maker 550/6000 System Event Code
108Protective Relay Over PowerDecision-Maker 550/6000 System Event Code
109Protective Relay Loss of FieldDecision-Maker 550/6000 System Event Code
11Aux. delayDecision-Maker 3+ Shutdown Fault Code
110Protective Relay Overcurrent VrDecision-Maker 550/6000 System Event Code
1100OverspeedDecision-Maker 3500 Event ID 1; Level 4; FMI 16Shutdown
1102Low Oil Pressure WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1103Low Coolant Temperature WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1104Low Oil Level WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1105Low Coolant Level ShutdownDecision-Maker 3500 Event ID 1; Level 4; FMI 18Shutdown
1106Low Fuel WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1107Low Battery VoltageDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1109High Fuel Temperature WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 16Warning
111Reverse Power ShutdownDecision-Maker 550/6000 System Event CodeShutdown
1110Low Fuel Pressure WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1114Low Coolant Pressure WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 18Warning
1115High Oil Temperature WarningDecision-Maker 3500 Event ID 1; Level 2; FMI 6Warning
112Over Power ShutdownDecision-Maker 550/6000 System Event CodeShutdown
113Loss of Field ShutdownDecision-Maker 550/6000 System Event CodeShutdown
114Over Current ShutdownDecision-Maker 550/6000 System Event CodeShutdown
115Common Protective Relay OutputDecision-Maker 550/6000 System Event Code
116In SynchDecision-Maker 550/6000 System Event Code
117Breaker TripDecision-Maker 550/6000 System Event Code
118Fuel Valve RelayDecision-Maker 550/6000 System Event Code
119Pre Lube RelayDecision-Maker 550/6000 System Event Code
12Aux. immediateDecision-Maker 3+ Shutdown Fault Code
120Air -Fuel Module StartDecision-Maker 550/6000 System Event Code
121Oil Temperature Loss of SignalDecision-Maker 550/6000 System Event Code
122High Oil Temperature WarningDecision-Maker 550/6000 System Event CodeWarning
123Intake Air Temperature Loss of SignalDecision-Maker 550/6000 System Event Code
124High Intake Air Temperature WarningDecision-Maker 550/6000 System Event CodeWarning
125High Intake Air Temperature ShutdownDecision-Maker 550/6000 System Event CodeShutdown
126MDEC/ADEC Yellow AlarmDecision-Maker 550/6000 System Event CodeWarning
127MDEC/ADEC Red AlarmDecision-Maker 550/6000 System Event CodeShutdown
128MDEC/ADEC Block Heater ControlDecision-Maker 550/6000 System Event Code
129Low Coolant Temperature ShutdownDecision-Maker 550/6000 System Event CodeShutdown
13MDEC/ADEC yellow alarm (warning)Decision-Maker 3+ Shutdown Fault CodeWarning
130MDEC/ADEC Load Shed Over TemperatureDecision-Maker 550/6000 System Event Code
131Reserved For Future UseDecision-Maker 550/6000 System Event Code
132Engine Derate ActiveDecision-Maker 550/6000 System Event Code
133Engine StalledDecision-Maker 550/6000 System Event Code
1334Under Voltage Shutdown (L1-L2)Decision-Maker 3500 Event ID 1; Level 4; FMI 18Shutdown
1336Under Voltage Shutdown (L2-L3)Decision-Maker 3500 Event ID 1; Level 4; FMI 18Shutdown
1338Under Voltage Shutdown (L3-L1)Decision-Maker 3500 Event ID 1; Level 4; FMI 18Shutdown
134J1939 CAN Engine ShutdownDecision-Maker 550/6000 System Event CodeShutdown
1358Under Frequency ShutdownDecision-Maker 3500 Event ID 1; Level 4; FMI 18Shutdown
1374High Total Power ShutdownDecision-Maker 3500 Event ID 1; Level 4; FMI 16Shutdown
139FirmwareUpgradeFaultDecision-Maker 3000 Event Code 139; Internal Fault
14MDEC/ADEC red alarmDecision-Maker 3+ Shutdown Fault CodeShutdown
143WatchdogTimerExpiredDecision-Maker 3000 Event Code 143; Internal Fault
144InternalFailureDecision-Maker 3000 Event Code 144; Internal Fault
145FileSystemErrorDecision-Maker 3000 Event Code 145; Internal Fault
146USBErrorDecision-Maker 3000 Event Code 146; Internal Fault
15Loss of ECM commsDecision-Maker 3+ Shutdown Fault CodeShutdown
16kW OverloadDecision-Maker 340 Alert Code
1601Low Maximum Alternator CurrentDecision-Maker 3500 Event ID 1; Level 4; FMI 18Shutdown
163TestEventDecision-Maker 3000 Event Code 163; Test Event
17Under Frequency WarningDecision-Maker 340 Alert CodeWarning
175No Oil Press1 SignalDecision-Maker 550/6000 System Event Code
176No Oil Press2 SignalDecision-Maker 550/6000 System Event Code
177No Cool Temp1 SignalDecision-Maker 550/6000 System Event Code
178No Cool Temp2 SignalDecision-Maker 550/6000 System Event Code
179Hi Cool Temp1 ShtdwnDecision-Maker 550/6000 System Event CodeShutdown
18High Battery VoltageDecision-Maker 340 Alert Code
180Hi Cool Temp2 ShtdwnDecision-Maker 550/6000 System Event CodeShutdown
181Oil Press1 ShutdownDecision-Maker 550/6000 System Event CodeShutdown
182Oil Press2 ShutdownDecision-Maker 550/6000 System Event CodeShutdown
183Hi Cool Temp1 WarnDecision-Maker 550/6000 System Event CodeWarning

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

12
APM802 Connection Procedure (RS-485 or Ethernet) installation

⚠ Hazardous voltage. Will cause severe injury or death. Disconnect all power sources before opening the enclosure.

Tools: Belden #9841 or equivalent shielded twisted-pair cable

  1. Disable the generator set per safety precautions.
  2. Turn off and disconnect power to all devices in the system.
  3. Connect to RS-485 connections on TB10 or to the RJ45 port labeled Ethernet 3.
  4. Verify that the controller is OFF.
  5. Reconnect the engine starting battery, negative (--) lead last.
  6. Reconnect power to the battery charger, if equipped.
Complete the RSA III final installation installation
  1. Mount the RSA III box to the wall or to the electrical box in the wall if not already done; check that the box is square.
  2. Position the RSA III front panel assembly to the box and install four self-tapping screws X-67-154; do not tighten.
  3. Center the remote annunciator in the box and square with the wall; tighten the screws.
  4. Flush mount: place wall-mounting plate GM85126 behind the RSA III front panel assembly flange.
Configure the APM402 controllers for the remote serial annunciator installation
  1. Verify the controller defaults to a 19200 baud rate and Modbus address #1.
  2. If Modbus settings need altering, use SiteTech software to make the configuration changes.
  3. Verify the RS-485 address on the controller matches the address on the RSA III master.
Configure the APM603 controllers for the remote serial annunciator installation
  1. Verify the controller is factory configured with RSA Baud Rate 19200, RSA Comm Protocol Modbus, and RSA Modbus Address 1.
  2. Verify the RS-485 address on the controller matches the address on the RSA III master.
Configure the APM802 controllers for the remote serial annunciator installation
  1. Verify the controller is factory configured with speed 19200 baud, stop bit 1, parity without, function Modbus slave, slave number 1.
  2. Verify the RS-485 address on the controller matches the address on the RSA III master.
Configure the DEC 3+ controller for the remote serial annunciator installation

⚠ After setting DIP switches, power down and then power up the controller for the change to be acknowledged.

  1. Set the controller Modbus address to #1 by placing DIP switches 6, 7, and 8 to the open position.
  2. The DEC 3+ controller baud rate is fixed at 19200; no change is required.
  3. If a communication module board was installed, download firmware version 1.23 or higher (red board) or 2.03 or higher (blue board).
  4. Replace the controller cover and hardware.
Configure the DEC 550 and DEC 6000 Controllers for the Remote Serial Annunciator installation
  1. Replace the controller cover and hardware.
  2. Press the Reset Menu key on the controller keypad.
  3. Go to Menu 14, Programming Mode, and press the down arrow key to Programming Mode.
  4. Enter the access code (factory default is 0) and press Enter.
  5. Go to Menu 13, Communications, and press the right arrow key to Protocol - Modbus.
  6. Set the controller Modbus address to #1 and press Enter.
  7. Set the Baud Rate to 19200 if not already shown.
Configure the DEC 8000 controllers for the remote serial annunciator installation
  1. Use the controller menus to change the setpoints: Contr. address 1, RS232(2) mode 0 - DIRECT, RS232(2) MBCSpd 1 - 19200, RS485(2) conv. ENABLED.
  2. For RS-485 port 2, enable the internal converter and set the Modbus communication speed to 19200 bps.
  3. Verify the RS-485 address on the controller matches the address on the RSA III master.
Configure the Decision-Maker 3000 and 3500 controllers for the remote serial annunciator installation
  1. Verify the controller defaults to a 19200 baud rate and Modbus address #1.
  2. If Modbus settings need altering, use SiteTech software to make the configuration changes.
  3. Verify the RS-485 address on the controller matches the address on the RSA III master.
Controller Setup Procedure (Decision-Maker 550) installation
  1. Go to Menu 14—Programming Mode; enter local programming mode.
  2. Enter the controller access code.
  3. Go to Menu 13—Communications.
  4. Select Protocol Modbus0 or Modbus1.
  5. Enter Yes at the Modbus Online Y/N display.
  6. Choose Single or Converter connection type.
  7. Choose RS-232 or RS-485 for the primary port.
  8. Enter the network address (1-246).
  9. Select the same baud rate for all devices.
  10. Choose remote, local, or off programming mode.
  11. Enter the controller access code.
Decision-Maker 3000 Connection Procedure installation

⚠ Accidental starting can cause severe injury or death.

  1. Press the OFF button on the controller.
  2. Disconnect the power to the battery charger, if equipped.
  3. Disconnect the engine starting battery(ies), negative (--) lead first.
  4. Turn off and disconnect power to all devices in the system.
  5. Connect to communication port P21.
  6. Verify that the controller is OFF.
  7. Reconnect the engine starting battery, negative (--) lead last.
  8. Reconnect power to the battery charger, if equipped.
Decision-Maker 3500 Connection Procedure installation

⚠ Accidental starting can cause severe injury or death.

  1. Press the OFF button on the controller.
  2. Disconnect the power to the battery charger, if equipped.
  3. Disconnect the engine starting battery(ies), negative (--) lead first.
  4. Turn off and disconnect power to all devices in the system.
  5. Connect to communication port on TB12 (located in the junction box).
  6. Verify that the controller is OFF.
  7. Reconnect the engine starting battery, negative (--) lead last.
  8. Reconnect power to the battery charger, if equipped.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Voltage reconnection

VoltagePhaseConnectionLeadsNotes
APM402 and Decision-Maker 3000 P21P21-1 GND Shield; P21-2 (+) White; P21-3 (-) BlackConnect shield at either end but not at both ends.
APM603 customer connection terminal block(+) White; (-) Black; Shield — do not connect at the customer connection terminal block; tape to insulate unused endConnect shield at the RSA III P27 connection but not at the APM603 customer connection terminal block.
APM802 RS-485 connections on TB10Connector 7 (--) Blue; Connector 8 (+) Green. Shield: do not connect at TB10 or base module; tape to insulate unused end.120 ohm resistor located on the base module.
APM802 TB10TB10-7 (-) Blue; TB10-8 (+) Green; Shield — do not connect at TB10 or base module; tape to insulate unused end120 ohm resistor located on the base module; connect shield at the RSA III P27 connection only.
Communication module board TB5 (DEC 3+)TB5-3 ATS Position Input Return; TB5-4 User 1 Input Return; TB5-5 User 2 Input Return; TB5-6 User 3 Input Return; TB5-9 ATS Position Input; TB5-10 User 1 Input; TB5-11 User 2 Input; TB5-12 User 3 InputTerminals 1, 2, 7, and 8 not used. User 3 Input reserved for high battery volts (HBV) on DEC 3+ controllers.
Decision-Maker 3+ P21P21-1 - Black; P21-2 + White; P21-3 GND ShieldConnect shield at either end but not at both ends.
Decision-Maker 3+ RS-485 connection (TB5)Connect A to --, B to +, and GND to shield.Use Belden #9841 or equivalent cable. Termination resistor X-6058-27 (121 ohms) connect + to -- on last device in network.
Decision-Maker 3500 TB12COM (+) (+) White; COM (-) (-) Black; Shield — do not connect at TB12 or DEC 3500, tape to insulate unused endConnect shield at the RSA III P27 connection only.
Decision-Maker 3500 TB12 RS-485 connectionCOM (+) White; COM (--) Black. Shield: do not connect at TB12 or DEC 3500; connect shield at RSA III P27 connection only.Use Belden #9844 or equivalent cable.
Decision-Maker 550 / 6000 RS-485 connectorConnect + to +, -- to --, GND to shield between devices. Use Belden #9841 or equivalent cable.Termination resistor X-6058-27 (121 ohms) connect + to -- on last device in network.
Decision-Maker 550 and 6000 P20P20-1 GND Shield; P20-2 + White; P20-3 - BlackConnect shield at either end but not at both ends.
Decision-Maker 8000 RS-485A terminal: blue wire, High (H) or Positive (+); B terminal: green wire, Low (L) or Negative (-)120 ohm resistor located on the controller base box; connect shield at the RSA III P27 connection only.
Decision-Maker 8000 RS-485 connections (customer connection area, bottom panel)Blue, high (H) or positive (+), wire connects to the A terminal; Green, low (L) or negative (--), wire connects to the B terminal. COM terminal also present.Pull up jumper, pull down jumper, and 120 ohm resistor for RS-485 are located on the controller base box.
P27 connector on RSA III slaveP27-1 (-) Black (from master or previous slave); P27-2 (+) White (from master or previous slave); P27-3 Shield (from master or previous slave); P27-4 (-) Black (to next slave or terminating resistor); P27-5 (+) White (to next slave or terminating resistor); P27-6 Shield (to next slave or open)RS-485 daisy chain from master to slave.
P27 connector on master RSA IIIP27-1 (-) Black (from controller); P27-2 (+) White (from controller); P27-3 Shield (from controller); P27-4 (-) Black (to slave or terminating resistor); P27-5 (+) White (to slave or terminating resistor); P27-6 Shield (to slave or open)RS-485 communication from controller to RSA III master. Connect shield at either end but not both ends.
P27-1 (Controller to RSA III master)(-) Black (from controller)RS-485 communication; use Belden #9841 or equivalent.
P27-2 (Controller to RSA III master)(+) White (from controller)RS-485 communication.
P27-3 (Controller to RSA III master)Shield (from controller)Connect the shield wire at either end but not at both ends.
P27-4 (Master to slave)(-) Black (to slave or terminating resistor)RS-485 communication.
P27-5 (Master to slave)(+) White (to slave or terminating resistor)RS-485 communication.
P27-6 (Master to slave)Shield (to slave or open)RS-485 communication.
P37 power connectionsP37-1 Ground; P37-2 12/24 VDC battery input1 (not polarity sensitive); P37-3 12/24 VDC battery input2 (not polarity sensitive)Requires 12/24-volt, 200 mA (min.) DC power source; voltage should match generator set starting system.
P37-1GroundPower/CAN connections.
P37-212/24 VDC battery input1 (not polarity sensitive)Attach battery positive (+) at the starter solenoid.
P37-312/24 VDC battery input2 (not polarity sensitive)Attach battery negative (-) at the engine ground.
P40 output connectionsP40-1 Common fault relay normally closed; P40-2 Common fault relay common; P40-3 Common fault relay normally open; P40-4 Horn relay normally closed; P40-5 Horn relay common; P40-6 Horn relay normally openDry contacts rated at 220 VAC @ 0.8 amps and 30 VDC @ 2 amps.
P41 input connectionsP41-1 Local ATS emergency on input (EPS); P41-2 Local ATS emergency on input return (EPS); P41-3 User-Defined Digital input 1; P41-4 User-Defined Digital input 1 return; P41-5 User-Defined Digital Input 2; P41-6 User-Defined Digital Input 2 return; P41-7 User-Defined Digital Input 3; P41-8 User-Defined Digital Input 3 returnEPS and user-defined digital inputs typically supplied via remote Modbus RS-485 but may be hardwired locally.
P42 connectionsP42-1 User-defined digital input 4; P42-2 User-defined digital input 4 return; P42-3 User-defined digital input 5; P42-4 User-defined digital input 5 returnLocal user-defined digital inputs 4 and 5.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Parts

7model family
Part #DescriptionQtySystem
GM49791-1Communication module boardCommunication board Amazon
GM26369Service KitService part / kit buy
GM32644-KA1Communication moduleService part / kit buy
GM32644-KP1Communication moduleService part / kit buy
GM41143-KP2Modbus/Ethernet converter for serial to Ethernet communicationService part / kit buy
GM60407Supply, power1Service part / kit buy
GM86125Board, main logic (RSA III circuit board)1Service part / kit buy

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Available documents

Reference (Kohler)Reference — Monitor 3 (Kohler)Reference — tp6208 (Kohler)Owner's manual — tp6214 (Kohler)Service manual — Annunciators tt1625 (Kohler)Service manual — sb627 (Kohler)Service manual — tp6113 (Kohler)Service manual — tt1625 (Kohler)