Fire pump controller connections

FIRE PUMP CONTROLLER CONNECTIONS

Connector JF: 10 Poles    Digital Inputs

JF-1

MCB1 FAILURE

Active ‘LOW’ input to detect a failure of the battery charger 1. Connect here the output alarm relay of the battery charger number 1. The alarm triggers when you connect this input to the battery minus.

JF-2

MCB2 FAILURE

Active ‘LOW’ input to detect a failure of the battery charger 2. Connect here the output alarm relay of the battery charger number 2. The alarm triggers when you connect this input to the battery minus.

JF-3

COOLANT TEMPERATURE

This input monitors the Temperature Switch. The temperature alarm triggers when you connect this input to the battery minus. It provides a shut down only in EP mode (*)

JF-4

WATER PRESSURE

Active ‘OPEN’ input to detect a loss of water pressure in the fire station system. The alarm triggers when Be126 detects a circuit open or a DC voltage over 4V. The input closed to battery minus or a DC voltage lower than 3V holds the BE126 in standby (WATER PRESSURE is OK). You are required to connect a pressure switch with mechanical hysteresis.

 

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 section).

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 an output to drive an external lamp that warns the user to trigger the MANUAL START TEST BUTTON.

JF-7

WATER RESERVOIR LEVEL SWITCH

Active ‘OPEN’ input to detect a LOW WATER LEVEL in the fire station system. The alarm triggers when Be126 detects a circuit open or a DC voltage over 4V. The input closed to battery minus or a DC voltage lower than 3V holds the BE126 in standby (WATER LEVEL is OK). You are required to connect a water level switch with mechanical hysteresis. You can connect any switch or device able to detect presence of fire. It works in a logical ‘OR’ with input J4 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 shut down only in EP mode (*)

JF-10

ENGINE PROTECTION

MODE

 

By leaving open this input, the Be26 works in NFPA 20 (or UNI EN 12845) mode. By connecting the input to the battery minus, the Be126 activates the EP mode (Engine Protection Mode). In this case all engine alarms provide a shut down to protect the engine. This mode is used in not FIRE PUMP application (e.g. general purpose diesel water pump stations).

MAINS INPUT

 

Connector JA: 7 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 and connections by using 1A (fast blow) fuses. The Be126 will monitor the status of the Mains according to your settings (see Mains Parameters section)

JA-3

S

JA-4

T

JA-5

 

N

 

JA-6

Not used

RS485 RS232 & CANBUS SAE J1939

Connector JG: 4 Poles  RS485-Modbus RTU             

JG-1

Common Ground

 RS485 serial interface Port.

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

JG-2

SIGNAL B

JG-3

SIGNAL A

JG-4

Termination 120 OHM

 

Connector JN: 4 Poles            Canbus Port

JN-1

Common Ground

 

Canbus serial interface port

(consult your engine manufacturer for the connections)

JN-2

Signal L

JN-3

Signal H

JN-4

Termination 120 OHM

 

Connector JH: 9 Poles Male Sub D   RS232                

JH-1

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

JH-8

NOT USED

JH-9

NOT USED

 

POWER SUPPLY

Connector JI: 3 poles   DC Supply Fire pump controller connections

JI-1

Battery 1 Plus Vdc supply (DC plant supply)

An internal electronic 300mA Thermal Protection is provided.  You are required to provide a supply between 6 up to 36VDC. The Be126 uses this connection to indicate battery 1 voltage measurement. The input is protected against large spikes.

 

JI-2

Common Battery minus 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.

 

JI-3

Battery 2 Plus Vdc supply (DC plant supply)

An internal electronic 300mA Thermal Protection is provided. You are required to provide a supply between 6 up to 36VDC. The Be126 uses this connection to indicate battery 2 voltage measurement. The input is protected against large spikes.

 

 

DIGITAL OUTPUTS  & CHARGER ALTERNATOR MONITORING

Connector JC: 10 Poles            NPN Short Circuit Proof Static Outputs

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

 

JC-1

PREGLOW

To be used in NON-Fire pump application for diesel pre-glow (see engine settings). In NFPA (or EN12845)  mode the output provides an active low when the software on the controller is running. The outputs is not active when there is an internal hardware or software failure.

 

JC-2

HORN (ALARM)

It drives the Horn via an auxiliary relay.

JC-3

FAIL TO START

It drives an external lamp or relay in case the engine fails to start.

JC-4

STOP SOLENOID

Used to drive a SOLENOID ENERGIZED to stop relay. The timing is programmable (see engine settings).

 

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. electronic 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

Energized to run output for Fuel solenoid and ancillary circuitry (e.g. ECU).

 

JC-9

D+ / W.L. EXCITEMENT

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.

 

JC-10

D+ / W.L. MONITORING/

ENGINE RUNNING DETECT.

In a standard application (not FIRE PUMP) you are required to connect this terminal to JC-9. In a NFPA 20 or UNI EN 12845 application you can connect a sensor that provides the ENGINE RUNNING STATUS information. This input detects an engine running status when you apply a DC voltage over 10V. We remind you that in NFPA application you are not allowed to detect the engine running from a charger alternator (you can use Speed-Sensitive devices or transducers). The best solution is to use a magnetic pickup connected to JM8-9 terminals.

 

 

AUXILIARY 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 energize when the engine is running.

 

JB-2

NOMINAL SPEED REQUEST

This output energizes when you are required to run the engine at nominal speed. In case you have an external speed governor you can switch to IDLE speed.

When the output is not active, you are suppose to run the engine at IDLE 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.

 

JB-4

AUTO MODE ACTIVE

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

 

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).

 

 

ANALOG INPUTS & MAGNETIC PICKUP

Connector JM: 10 Poles    Fire pump controller connections analog inputs 

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 [AUXILIARY INPUT] menu section.

 

JM-2

 

AUXILIARY

TEMPERATURE

This input monitors an auxiliary temperature sensor. See section [AUX TEMPERATURE]  to set an alarm. You can program the response curve of the sensor.

Allowed range for the sensor: 0-1000 OHM.

 

JM-3

 

COOLANT

TEMPERATURE

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

Allowed range for the sensor: 0-1000 OHM.

 

JM-4

 

OIL

PRESSURE

This input monitors the Oil Pressure. See section [OIL PRESSURE] 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 [FUEL LEVEL] 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 speed of the engine. 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 [ENGINE SPEED] menu).

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

JM-8

MAGNETIC PICKUP (+) 

JM-9

MAGNETIC PICKUP (-) / W

JM-10

PICKUP SHIELD

 

 

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