AUTOMATIC GENERATOR START

THE AUTOMATIC GENERATOR START WITH A KEY START

By adding 3 automotive type relays you can make a reliable cost-effective automatic generator start controller. As a result, the Be24 Auto Start and Key Start module is the ideal solution when you refurbish an old DIESEL-DRIVEN generator.  As long as you set up the basic protections for Over-Under Voltage and Over-Under Frequency you will totally protect your alternator and load. The engine safeguards for low oil pressure, high engine temperature, and low fuel work by means of switches connected to the digital inputs via the blade terminals. As a result, you will get total engine protection. Further improvements in case you need generator remote monitoring can be obtained by using the Be124 Auto Start Module. This generator auto start is of compatible size.  But, if you only need to protect the diesel engine in general-purpose diesel-driven machinery, we recommend that you use the Be172 controller.  When dealing with small gasoline engines, the right choice is the Be1 Auto Start Module.

INSTALLATION MANUAL

AUTOMATIC GENERATOR START CONTROLLER

Automatic Generator Start front panel view. The Be24 generator auto start is the ideal choice for diesel generators working in rush environments. It can normally operate between -30 and up to 70°C. It can withstand -40°C up to +85°C for an accumulated time total of 1000 hours.

THE BE24 SPECIFICATIONS

>Supply Voltage: 5.5Vdc - 36Vdc     >Supply Current: 10-150mA max    >Cranking Dropout:  0V for 500mS    >Dimensions: 96X96X60mm    >Panel Size Cut-out: 91X91mm     >Temperature: -30 /+70  deg. C    >Weight: 550 grams. CE     >Pickup : 0,5-50V   0- 25KHz    >Generator Voltage: 70 - 600Vac     >Frequency: 20 Hz up to 99 Hz    >Overvoltage Input Protection     >Current: 5/5Aac up to 2000/5Aac  >Charger Alternator Input: 60Vdc     >Short Circuit Proof Outputs

THE BE24 CONNECTIONS

The generator (1) voltage is connected to Be24 via the L1 & L3. We recommend that you protect the connections with 1A fuses (4).

In case you need a Generator Circuit Breaker, you can drive the coil of it by using the digital output '2' (in this case the output to drive the horn will not be available).

If you connect a dashboard we recommend that you protect the output 15/54 with a 5 Amp fuse.

SEE THE DETAILS

The outputs of the controller being 'static' require a pilot relay.

The use of fly-back diodes is mandatory. The Be24 detects the rotational speed from a pick-up or from the 'W' terminal of the belt alternator.

If these devices are not available, the Be24 automatically calculates the rotational speed from the generator. In this case, you are required to program the correct number of poles of the alternator.

The generator controller connections are made by using blade terminals 6,3X0,8mm. The generator controller connections of the generator voltage and current are made by using a removable terminal block.

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WHAT IS A GENERATOR AUTO-START CONTROLLER?

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USING KEY START MODE

When you do not require the auto-start function, you can directly start the engine by using the key switch.

The Rated current of the embedded is about 30 Amps. You can use a 12V or 24V battery. This auto-start generator controller works up to 36VDC.

You are required to use cables of appropriate size. We always recommend that you protect the connections by using a fuse.

In this case, the Be24 will not be able to terminate the crank. Before turning the key to 'START' wait for the lamp self-test. After that, the Be24 will turn on the fuel solenoid and you can start the engine at any time. Do not use the output number '10'. Leave the connection 'open'.

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USING THE AUTO-START MODE

Follow the wiring diagram if you want to use the Be24 module in the full AUTO START MODE. You are required to connect a pilot relay capable of delivering about 30 amp. In this case, is no longer mandatory to use the terminal '50' of the key.

You can start and stop the generator by using a remote switch connected to terminal '7'. You can adjust settings about start and stop delays. The AUTO START module monitors the REMOTE INPUT only if you put the controller in the AUTO MODE using the button on the front panel. You can still use the key start function when the controller is not in AUTO MODE. When you turn the key to start, the BE24 automatically activates the digital output '10' that will excite the pilot start relay.

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BE24 MODE OF OPERATION OVERVIEW

 The Be24A generator auto start features AUTO, MANUAL, and OFF modes of operation. When you connect the battery supply, the Be24 generator auto start reacts as follows:

a) if the KEY-SWITCH is in the OFF position, the Be24 generator auto-start enters the OFF mode

b) if the KEY-SWITCH is in the ON position, the Be24 generator auto start enters the AUTO mode.

THE OFF MODE

The OFF mode clears the alarms and turns the Display off. To select the OFF mode, turn the KEY switch off. In the OFF mode, you can read the settings or program the controller.

 THE AUTO MODE

The Be24 generator auto-start operates according to the parameters indicated in the installation manual. The Be24A initiates the starting when you activate the ‘REMOTE START' input or you set up the SCHEDULER.

To enter the 'AUTO'  mode, use the following instructions:

A) - turn ON the KEY switch; the Be24 generator auto start illuminates the Display and LEDs for 1 second

B) - push the AUTO push button, then the Be24 generator auto start will indicate [uuuu] (Pre-glow cycle) or [StA-]; the yellow Led ‘AUTO’ also illuminates. If the REMOTE START input is not activated, the yellow LED blinks. If activated, the yellow LED illuminates continuously and a start cycle will take place after an adjustable delay time.

C) - To exit the AUTO mode, push the AUTO push button (the yellow Led turns OFF) or turn the KEY switch to OFF.

If an Automatic Periodic Test is triggered (scheduler), the display indicates the message [tESt] (see application note in section 19.0 of the OEM manual).

The Be24A generator auto start stores the AUTO operating mode in the memory; if the battery supply then fails and restores, the Be24A will enter the AUTO mode automatically.

To clear the memory of the AUTO mode, push the AUTO push button, or turn OFF the KEY switch.

THE MANUAL MODE

MANUAL mode gives an engine start by means of the KEY SWITCH. Use the following instructions:

A) - Turn ON the KEY switch; the Be24 generator auto start illuminates the LEDs and Display.

B) - If the display shows the message [uuuu], the Be24 is counting the PRE-GLOW time; wait until the message disappears.

C) - When the display shows the message [StA-] turn the Key to the START position until the engine starts. The Be24 indicates [ . . . .] during cranking.

D) - To stop the engine, turn the KEY switch off.

THE SCHEDULER

To schedule automatic test attempts, you are required to program the parameters  [P.26] and [P.27] (section 11.0 in the installation manual). In order to start the engine on time,  follow these instructions:

- disconnect the power supply of the Be24

- wait for the desired start time (external clock reference) and apply the power supply to the Be24.

- select the 'AUTO' mode of operation

Consequently, the Be24A will start the engine after the programmed number of days. The engine will run for the programmed time. If the battery voltage is removed, we recommend that you synchronize the ‘Power On’ of the Be24A with an external clock.

Time remaining to start indication:

The Be24 shows the remaining time to trigger the test: push the [ENTER] pushbutton while Be24 is in the AUTO mode of operation. As a result, the display will indicate days followed by hours ([DD.hh]).

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46035 Ostiglia,  Italy

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