fire pump controller wiring diagram

FIRE PUMP CONTROLLER WIRING DIAGRAM

 THIS IS THE RECOMMENDED BASIC WIRING DIAGRAM  

CONNECTION DESCRIPTION PAGE

BE126 FIRE FIGHTING CONTROLLER TUTORIAL PAGE

  !! WARNING !! ANY INTERRUPTION OF THE PROTECTIVE GROUND OR DISCONNECTION OF THE PROTECTIVE EARTH IS LIKELY TO MAKE THE Be126 DANGEROUS

FIRE FIGHTING CONTROLLER HOME PAGE

FIRE PUMP CONTROLLER WIRING DIAGRAM: MAINS VOLTAGE CONNECTION

 

 

Connector JA (6 Poles)  Mains Voltage Inputs

 

JA-1

Not used

JA-2

 

Mains Voltage

600Vac max

Phase-Phase

R

 

 

 

You are required to connect these terminals to the Mains. We recommend that you protect the cables by using 1A (fast blow) fuses. The Be126 will monitor the status of the Mains according to your settings (see Mains Parameters section).

NFPA 20 or UNI-EN 12845 do not require Mains monitoring.

 

JA-3

S

 

JA-4

T

 

JA-5

 

N

 

JA-6

Not used

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: AUXILIARY DIGITAL OUTPUTS

 

 

Connector JB: (5 Poles)            NPN Short Circuit Proof Static Auxiliary Outputs

NOTE: the outputs are ‘active low’ (200mA nominal current)

 

JB-1

ENGINE IS RUNNING

You can connect an external lamp or an auxiliary relay that energizes when the engine is running.

 

JB-2

NOMINAL SPEED REQUEST

This output energizes when you are required to run the engine at nominal speed. By default IDLE speed is disabled. The output is energized all the time the Be126 activates the fuel solenoid.

When you set an IDLE speed and an IDLE TIME (see section 14.0), the output remains disabled as long as requested by the IDLE timer. When Be126 requires a nominal speed, the output JB-2 will energize an external relay that will instruct the governor to run the engine at nominal speed.

 

In case you are using an engine with a SAEJ1939 compatible ECU, this output indicates when the engine is supposed to work at nominal speed.

 

JB-3

LOW FUEL LEVEL

It indicates the presence of an alarm related to FUEL (see section 36.0.7).

 

JB-4

AUTO MODE ACTIVE

It energizes all the time that the controller is running the AUTO mode of opera

JB-5

DRAIN SOLENOID

Used to drive a relay able to supply the DRAIN VALVE. This function is used when you test the automatic system: the drain valve will allow you to trigger the pressure switch (in other words, it simulates a fire condition). See section 21.0 to set up the DRAIN SOL

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: DIGITAL OUTPUTS

 

 

DIGITAL OUTPUTS     Connector JC: 10 Poles   NPN Short Circuit Proof Static Outputs

NOTE: the outputs are ‘active low’ (200mA nominal current)

 

JC-1

OUTPUT # 1

(ON-LINE/ PRE-GLOW/ MODEM SUPPLY)

In NFPA (or EN12845) mode, the output provides an active low when the software of the controller is correctly running (ON-LINE mode). The output is not active when there is an internal hardware or software failure. In engine protection mode, you can use this output for diesel engine glow-plugs. You are required to program the option [PREGLOW] in the [OUTPUT 1 OPTION] parameter (see section 21.0 & 21.0.3)

 

JC-2

HORN (ALARM)

It drives an audible alarm via an auxiliary relay. You cannot silence the horn in NFPA/EN12845 application; you are required to enter the OFF mode of operation.

In ‘Engine Protection Mode’ the Be126 will allow you to silence the horn via the [HOME] button.

JC-3

FAIL TO START

It drives an external lamp or relay in case the engine fails to start. See section 13.0.2 to set up the number of attempts.

 

JC-4

OUTPUT #2

MANUAL START or

STOP SOLENOID

Default setting makes this output suitable to drive the lamp ‘OPERATE MANUAL START IF LAMP LIT’. This is in accordance with UNI/EN 12845 standard. In engine protection mode (not fire pump application) you can use this output to drive, via a relay, a STOP SOLENOID (see section 21.0.4). You can program the excitation time in the parameter [STOP SOLENOID] (see section 13.0.5).

 

JC-5

START 2

This is the terminal for the connection of the START 2 pilot driver relay.

 

JC-6

START 1

This is the terminal for the connection of the START 1 pilot driver relay.

 

JC-7

COMMON RELAY SUPPLY

This is the positive supply for the relay (or lamps) connected to the outputs. This supply is taken from the battery ‘1’ & ‘2’ via diodes. This output is short-circuit protected by 1 Amp internal elctronic fuse. You are required to connect 24VDC relays in case you use a 24V battery for the engine. JC-7 output voltage is Vbatt minus 1V. (example: if battery 1 is 29V, the JC-7 voltage is 28V).

 

JC-8

Fuel Solenoid output

Energized to run output for Fuel solenoid and ancillary circuitry (e.g. ECU). It energize all the time the engine have to run. The Be126 shuts down the output all the time you need to stop the engine or in case of automatic shut-down.

 

JC-9

D+ / W.L. Output

It provides 3W excitement for the charger alternator monitoring. It is used for standard (general purposes) water pump application. Engines used for FIRE PUMP application do not feature the charger alternator. You are required to keep this terminal open.

 

JC-10

D+ / W.L. Input/Engine running detect input.

In a standard application (not FIRE PUMP) you are required to connect this terminal to JC-9 and to the D+/WL terminal of the belt alternator. You can adjust the default setting in the parameter [CRANK VDC] (see section 13.0.3).

 

In a NFPA 20 or UNI EN 12845 application you can connect to this input, a rotational speed relay that provides a dc voltage of suitable amplitude. We remind you that you that detecting the engine running condition from a charger alternator is forbidden in NFPA 20 /UNI 12845 applications. This input detects an engine running condition when you apply a DC voltage over 10V. In case you use a pickup, leave this terminal open.

 

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: SERIAL INTERFACE

RS485 SERIAL INTERFACE  Connector JG (4 Poles)

JG-4

Common Ground

 

Consult the RS485/USB converter user manual for information. We recommend that you use Belden 9841(or similar) twisted pair cable.

JG-3

SIGNAL B

JG-2

SIGNAL A

JG-1

Termination 120 OHM

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: CANBUS CONNECTIONS

 

CANBUS PORT  Connector JN (4 Poles)       

JN-4

Common Ground

 

Canbus serial interface port

(consult your engine manufacturer for the connections)

JN-3

Signal L

JN-2

Signal H

JN-1

Termination 120 OHM

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: DIGITAL INPUTS

 

 

DIGITAL INPUTS Connector JF (10 Poles)

 

JF-1

MCB1 FAILURE

This input detects a failure of the battery charger 1. You can connect the output alarm relay of the battery charger ‘1’. The alarm triggers when you connect this input to the battery minus. (In case you use MODBUS compatible battery charger that sends alarm via MODBUS, keep the input open).

JF-2

MCB2 FAILURE

This input detects a failure of the battery charger 2. You can connect the output alarm relay of the battery charger ‘2’. The alarm triggers when you connect this input to the battery minus. (In case you use MODBUS compatible battery charger that sends alarm via MODBUS, keep the input open).

JF-3

COOLANT TEMPERATURE

This input monitors the Engine Coolant Temperature Switch. The alarm triggers when you connect this input to the battery minus. The Be126 shuts down the engine only in ‘Engine Protection Mode’.

 

JF-4

WATER PRESSURE

Input that detects a loss of water pressure in the fire fighting system. The alarm triggers when Be126 detects an open circuit. The input connected to battery minus holds the Be126 in standby (WATER PRESSURE is normal).

 

JF-5

FUEL RESERVE SWITCH

 

This input monitors the Fuel Level switch. The Be126 provides a warning when you connect this input to the battery minus. You are required to set up the level switch trigger point, according to NFPA20 requirements. In NOT FIRE applications you can use this input to shut down the engine after a programmable time (see FUEL parameters in the section 16.0).

 

JF-6

PUMP MANUAL TEST SWITCH

You are required to connect here the manual start button for testing the engine in accordance with UNI EN12845 (MANUAL START TEST BUTTON). The Be126 provides the output JC-4 to drive an external lamp that warns the user to trigger the MANUAL START TEST BUTTON.

 

JF-7

WATER RESERVOIR LEVEL SWITCH

Input to detect a LOW WATER LEVEL in the system. The alarm triggers when Be126 detects an open circuit. The input connected to battery minus holds the BE126 in standby (WATER LEVEL is OK). You can connect any switch or device able to detect presence of fire. It works in a logical ‘OR’ with input JF-4 providing a safety redundancy. Once Be126 detects one of the inputs open, it triggers the start of the engine.

 

JF-8

EMERGENCY SWITCH

 

You are required to connect this input to the MUSHROOM emergency switch. The Be126 triggers the alarm when you connect the input to the battery minus (active ‘LOW’ input).

 

JF-9

OIL PRESSURE SWITCH

 

This input monitors the Low Oil Pressure Switch. The low oil pressure alarm triggers when you connect this input to the battery minus. It provides a shutdown only in Engine Protection Mode.

 

JF-10

ENGINE PROTECTION

MODE

 

The Be26 works in NFPA 20 (or UNI EN 12845) mode by leaving this input open. The Be126 activates the Engine Protection Mode by connecting the input to the battery minus. In this case all engine alarms provide a shutdown to protect the engine. This mode is used in not FIRE PUMP application (e.g. general purpose diesel wa

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: SERIAL INTERFACE

 

 

RS232 SERIAL INTERFACE Connector JH (9 Poles)

 

JH-1-8-9

NOT USED

 

 

The connections are suitable for a modeM connection (ASCII protocol & AT commands)

JH-2

RX INPUT

JH-3

TX OUTPUT

JH-4

DTR OUTPUT

JH-5

GROUND

JH-6

DSR INPUT

JH-7

RTS OUTPUT

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: POWER SUPPLY

 

 

POWER SUPPLY CONNECTIONS Connector JI (3 poles)

 

JI-1

Battery 2 Plus Vdc supply

(DC plant supply)

An internal electronic 300mA thermal protection is provided. You have to connect a supply between 8 up to 36VDC. The Be126 uses this connection to indicate battery 2 voltage measurement.

JI-2

Common Battery minus supply.

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

 

JI-3

Battery 1 Plus Vdc supply

(DC plant supply)

An internal electronic 300mA Thermal Protection is provided. You have to connect a supply between 6 up to 36VDC. The Be126 uses this connection to indicate battery 1 voltage measurement.

 

FIRE PUMP CONTROLLER WIRING DIAGRAM: ANALOG INPUTS

 

 

ANALOG INPUTS Connector JM (10 Poles)

 

JM-1

WATER PRESSURE

 

This input accepts a 0-10V pressure transmitter or 4-20mA pressure transmitter. The Be126 allows you a large range of adjustments and calibration. Consult the section 19.0 to set up the pressure measurement.

 

JM-2

AUXILIARY

TEMPERATURE

This input monitors an auxiliary temperature transmitter. See section [AUXILIARY °C] submenu to set an alarm (see section 20.0). You can choose 4-20mA or 0-10V transmitter.

 

JM-3

COOLANT

TEMPERATURE

This input monitors the coolant engine temperature. See section [ENGINE TEMPERATURE] (18.0) to set or to adjust the response curve.

Allowed range for the sensor: 0-1000 OHM.

 

JM-4

OIL

PRESSURE

This input monitors the engine Oil Pressure. See section [OIL PRESSURE] (see section 17.0) to set an alarm or to adjust the sensor response curve.

Allowed range for the sensor: 0-1000 OHM.

 

JM-5

FUEL

LEVEL

 

This input monitors the Fuel Level. See section [TANK FUEL LEVEL] (see section16.0) to set an alarm or to adjust the response curve.

Allowed range for the sensor: 0-1000 OHM.

JM-6

NOT CONNECTED

JM-7

Internal Pull UP

You can connect a magnetic pickup to detect the rotational speed. As an option, if pickup is not available, you can connect the 'W' terminal of the charger alternator to JM-9. In this case connect terminals JM-7 & JM-8 together by using a short wire. You are required to set the number of teeth in the parameter [PICKUP/W RATIO]  (see the [ROTATIONAL SPEED] menu in the section 14.0).

In order to comply with NFPA 20 and UNI EN 12845 you are required to use a magnetic pickup.             

JM-8

Pickup (+)

JM-9

Pickup (-) / W

JM-10

Pickup shield