3054 and 3056 Engines 520 Generator Set Control Panel Caterpillar

The following tables describe the connections and the recommended cable sizes to the 2 connectors on the rear of the control module.

Illustration 1	g00837807

Table 1

Connector A Description
Contact Number	Description	Cable Size	Notes
1	DC power supply input	2.5 mm (0.1 inch)	-
2	DC power supply input (+V)	2.5 mm (0.1 inch)	A 16 Amp fuse is recommended.
3	Emergency stop input	2.5 mm (0.1 inch)	Power supply positive. The power supply positive also supplies the fuel output and start output. A 32 Amp fuse is recommended.
4	Fuel relay output	2.5 mm (0.1 inch)	Power supply positive from Contact 3. Rated for 16 Amps.
5	Start relay output	2.5 mm (0.1 inch)	Power supply positive from Contact 3. Rated for 16 Amps.
6	Programmable output relay 1	1.0 mm (0.04 inch)	Power supply positive. Rated for 5 Amps.
7	Programmable output relay 2	1.0 mm (0.0394 inch)	Power supply positive. Rated for 5 Amps.
8	Charge fail input/Excitation output	1.0 mm (0.04 inch)	Must not be connected to power supply negative if not used.
9	Oil pressure input	0.5 mm (0.02 inch)	Switch to negative
10	Coolant temperature input	0.5 mm (0.02 inch)	Switch to negative
11	Programmable input 1	0.5 mm (0.02 inch)	Switch to negative
12	Programmable input 2	0.5 mm (0.02 inch)	Switch to negative
13	Remote initiating contact	0.5 mm (0.02 inch)	Switch to negative

Table 2

Connector B Description
Contact Number	Description	Cable Size	Notes
14	Alternator input L1	1.0 mm (0.04 inch)	Do not connect if not used. A 2 Amp fuse is recommended.
15	Alternator input N	1.0 mm (0.04 inch)	Do not connect if not used.
16	DO NOT USE	-	Ensure no connection is made to this Contact.
17	Programmable output 3	1.0 mm (0.04 inch)	Power supply positive. Rated for 5 Amps.
18	Programmable input 3	0.5 mm (0.02 inch)	Switch to positive.
19	Programmable input 4	0.5 mm (0.02 inch)	Switch to positive.
20	Engine speed input (+V)	0.5 mm (0.02 inch)	Connect to engine speed sensing device.
21	Engine speed input (-V)	0.5 mm (0.02 inch)	Connect to engine speed sensing device.
22	Tachometer output (+V)	0.5 mm (0.02 inch)	Optional, specified on ordering. Tachometer must be completely isolated.
23	Tachometer output (-V)	0.5 mm (0.02 inch)	Optional, specified on ordering. Tachometer must be completely isolated.

Note: Shielded fiberglass cable must be used in order to connect the engine speed sensor. This ensures that the shield is grounded at one end only.

Table 3

Connector A Detailed Description
Contact Number	Description
1	DC power supply negative. System DC negative input (Battery negative).
2	DC power supply positive. System DC positive input. (Battery positive).
3	Emergency stop input. Internally connected to the starter output and the fuel output. If this input is not connected to positive, the module will be locked out. If the engine is running, the engine will shutdown immediately. Positive supply is also removed from the starter output and the fuel output. Only a single pole emergency shutdown button is required.
4	Fuel relay output. Power supply positive from Contact 3. Used to control the fuel solenoid.
5	Starter relay output. Power supply positive from Contact 3. Used to control the starting motor.
6	Programmable relay output 1. Power supply positive. Configurable output. Refer to the "P808 For Windows" manual for the options that are available.
7	Programmable relay output 2. Power supply positive. Configurable output. Refer to the "P808 For Windows" manual for the options that are available.
8	Charge fail input/excitation output. Supplies excitation to the power battery charging alternator, also an input for the charge fail detection circuitry.
9	Oil pressure input. This is a negative switched input, it is possible to calibrate the input to be a normally closed signal or a normally open signal. The input signals to the module that the oil pressure is low.
10	Coolant temperature input. This is a negative switched input. The input can be calibrated in order to be a normally closed signal or a normally open signal. The input signals to the module that the engine temperature is high.
11	Programmable input 1. This is a negative switched configurable input. Refer to the "P808 For Windows" manual for the options that are available. It is possible to configure the input to be a normally closed signal or a normally open signal.
12	Programmable input 2. This is a negative switched configurable input. Refer to the "P808 For Windows" manual for the options that are available. It is possible to configure the input to be a normally closed signal or a normally open signal.
13	Remote initiate contact. This is a negative switched input which will start the engine when AUTO is selected. It is possible to configure the input to be a normally open signal or a normally closed signal.

Table 4

Connector B Detailed Description
Contact Number	Description
14	Alternator input L1. Used for alternator speed sensing.
15	Alternator input N. Used for alternator speed sensing.
16	DO NOT USE
17	Programmable relay output 3. Power supply positive. Configurable output. Refer to the "P808 For Windows" manual for the options that are available.
18	Programmable input 3. This is a negative switched configurable input. Refer to the "P808 For Windows" manual for the options that are available.
19	Programmable input 4. As for Programmable input 3 (Contact 18).
20	Engine speed input positive. An AC signal from the engine speed sensor positive for speed sensing.
21	Engine speed input positive. An AC signal from the engine speed sensor negative for speed sensing.
22	Tachometer output positive. A 0.5 mA or 1.0 MA tachometer can be used.
23	Tachometer output negative. A 0.5 mA or 1.0 MA tachometer can be used.

Table 5

Calibration Socket
Contact Number	Description
1	Ground
2	Transmit Data
3	Receive Data
4	+5V Supply