BE124 TERMINAL DESCRIPTION

 
Generator Controller Terminal Description

IN THIS PAGE ALL DETAILS ABOUT THE CONNECTIONS OF THE BE124 GENSET CONTROLLER

BE142 WIRING DIAGRAM

WARNING! By opening the secondary circuit of the C.T.’s  you can generate a dangerous voltage. Never disconnect a connection of a CT when the generator is working. You can seriously damage the controller and putting yourself in a serious risk of electrical shock. 

 

[1] VOLTAGE INPUTS
[2] ANALOG/DIGITAL INPUTS
[3] RS485 PORT
[4]CANBUS PORT
[5] BATTERY MINUS
[6] BATTERY PLUS
[7] STARTER
[8] DASH BOARD
[9] DIGITAL OUTPUTS
[10] CTs CONNECTION

Connector JA Generator Voltage Input Sensing              

JA-1

Generator

Voltage

600Vac max

Phase-Phase

L1

 

You are required to connect these terminals to the generator. We recommend that you protect the cables and connections by using 1A (fast blow) fuses.

JA-2

L2

JA-3

L3

JA-4

N

Connector JB  RS485-Modbus RTU Serial Interface         

JB-1

Common Ground

 

RS485 serial interface Port.

Consult the Be-485/USB converter User Manual for information. We recommend that you use Belden 9841(or similar) twisted pair cable.

JB-2

SIGNAL B

JB-3

SIGNAL A

JB-4

Termination 120 OHM

 

Connector JC: Analog & Digital Configurable Inputs

JC-1

Magnetic Pickup (-) / W

You can connect a magnetic pickup to detect the speed of the engine. As option, if pickup is not available, you can connect the 'W' terminal of the charger alternator to JC-1. In this case connect terminals JC-2 & JC-3 together by using a short wire. You are required to set the number of teeth in the parameter [PICKUP/W RATIO]  (see section11.5.5).            

JC-2

Magnetic Pickup (+)

JC-3

W Enable

JC-4

GND Compensation

(Ground Sense)

 

This is a mandatory connection if the Be124 it is more than 5 meters away from the engine. You are required to connect terminal JC-4 to the body of the engine (a solid connection is required). If the engine is closer, you can connect JC-4 to battery minus. If you do not use an analog sensor (only digital inputs) you can leave this terminal open.

 

JC-5

 

Fuel Level Sensor or Switch

 

This input monitors the Fuel Level sensor. See section 11.6 to set an alarm and table 11.10 for the programmable response curve. Factory programming sets the input in digital mode (you are required to connect a switch). To enable the analog mode, you are required to set at least one alarm (Low/High fuel) and connect the ground sense JC-4.

 

JC-6

 

Temperature Sensor or Switch

This input monitors the Temperature sensor. See section 11.4.10-11 to set an alarm and table 11.10 for the programmable response curve. Factory programming sets the input to digital mode (you are required to connect a switch). To enable the sensor mode you are required to set one alarm (Low or High temperature) and connect the ground sense JC-4.

JC-7

 

Oil Pressure Sensor or

Switch

This input monitors the Oil Pressure sensor. See section 11.4.11 to set an alarm and table 11.10 for the programmable response curve. Factory programming sets the input to digital mode (you are required to connect a switch). To enable the sensor mode you are required to set one alarm (Low pressure warning or shutdown) and connect the ground sense JC-4.

JC-8

Configurable

Digital Input 3

 

 

 

You can connect switches. Each input can be configured via software: see table 11.8 for the available options. You have options for normally closed or normally open contacts. The other side of the switches must be connected to battery minus terminal (or ground, supposing that battery minus is properly grounded).

JC-9

Configurable

Digital Input 2

 

JC-10

Configurable

Digital Input 1

 

 

 

 

 

Generator controller terminal description: Canbus Port (SAEJ1939 Compliant)

JD-1

Common Ground

 

Canbus serial interface port

(consult your engine manufacturer for the connections)

JD-2

Signal L

JD-3

Signal H

JD-4

Termination 120 OHM

 

 Generator Current Inputs & Earth Fault Sensing

WARNING! Do not disconnect this plug when the engine is running. By opening the secondary circuit of the C.T.’s  you can generate a dangerous voltage. Never disconnect a connection of a CT when generator is working. You can seriously damage the controller and putting yourself in a serious risk of electrical shock.

JE-1

Current Transformer  L1 (S1)

Inputs for the Current Transformers.

The nominal Current is 5A.

To program the size see section 11.3.12

 

JE-2

Current Transformer  L2  (S1)

JE-3

Current Transformer  L3  (S1)

JE-4

Earth Fault sensing C.T. (S1)

JE-5

Current Transformer Common (S2's)

S2 terminal of each CT must be grounded

 

PRE-CONFIGURED AND PROGRAMMABLE DIGITAL OUTPUTS

 

Generator controller terminal description: PNP Static Outputs (Positive Output Logic)

JF-1

D+ / W.L. Input/Output

It provides 3W excitement for the charger alternator monitoring.

JF-2

Not Connected

Not to be used

JF-3

Configurable Output 2

It drives an auxiliary relay with a configurable function (see 11.9)

JF-4

Configurable Output 1

It drives an auxiliary relay with a configurable function (see 11.9)

JF-5

GCB Output

It drives the auxiliary relay of the Generator Circuit Breaker

JF-6

Alarm Output

It drives the Horn via an auxiliary relay

JF-7

Start Pilot output

It drives the Starting Motor via a start pilot relay

JF-8

Fuel Solenoid output

Energized to run output for Fuel solenoid and ancillary circuitry

 

KEY SWITCH CONNECTION & POWER SUPPLY

 

Generator controller terminal description: Key switch 6,3x0,8mm terminals & power connections

30

Plus Battery Vdc supply (DC plant supply)

An internal Electronic 300mA Thermal Protection is provided.

If you have provision to use the Manual Start (terminal 50) we recommend that you provide a proper size of the cable (4.0 up 6.0 sq.mm or 10-14AWG).

 

-BT

Battery minus supply (DC plant supply)

Should be connected straight to the battery minus. We recommend that you use a wire with minimum size of about 2.5 sq.mm.

 

15/54

Auxiliary Supply Output

It could be used for ancillary circuits (dashboard). We recommend that you protect this connection using a 5A fuse (fast blow). It provides a voltage only when you turn the key to ‘ON’.

50

Start (30Amps) output

This should be connected in case you use only the manual mode (no provision of AUTO mode). The simultaneous use of terminal ‘50’ and a ‘Start Pilot Relay’ (connected to JF-7) may severely damage the engine.