Bernini Be242 AMF ATS User manual

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 1
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Be242 AMF ATS Controller
Installation Manual
The information in this document may be subject to change without prior notice.
No part of this document may be copied or reproduced in any form or any means without the prior written
consent of Bernini Design company. Bernini Design assumes no responsibility for any errors that may appear in
this instruction manual or in the wiring diagrams.
Although Bernini Design has taken all possible steps to ensure that the User Manual is complete, bug free and
up-to-date, we accept that errors may occur. If you encounter problems with this instruction manual, please
contact us.
Customer Support BERNINI DESIGN SRL Italy
e-mail: [e-mail]
mobile: [phone] mobile: [phone]
Warranty
Bernini Design SRL (hereinafter "BD") warrants that Be242 shall be free from defect in material or workmanship
for a period of 3 years from the BD delivery date. BD shall, at its discretion, repair or replace the product without
charge. BD shall return the Be242 to the buyer with the Default parameters at no extra charge. The buyer shall
provide sufficient information on any alleged defects in the product, so as to enable BD to determine their cause
and existence. If the Be242 is not defective, or the product is defective for reasons other than covered by this
warranty, the buyer will be charged accordingly. This warranty shall not apply if the Be242 has not been used in
accordance with the User Manual and other operating instruction, particularly if any defects are caused by
misuse, improper repair attempts, and negligence in use or handling.
This purchase is non-refundable.
This equipment complies with EMC protection requirements
WARNING!! High voltage is present inside the Be242. To avoid electric-shock hazard, operating
personnel must not remove the protective cover. Do not disconnect the Earth connection. The Be242
can start the engine at anytime. Do not work on equipment, which is controlled by the Be242. When
servicing the engine, disconnect the battery and battery charger. We recommend that warning signs be
placed on equipment indicating the above.
!! W A R N I N G !! Relays and solenoids connected to the Be242 must be
suppressed using flywheel diodes or suppression devices as indicated in section 18.0.
We recommend placing a 10 A (fast-blow fuse) in series with the terminal #7
(BATTERY PLUS ON BE242RB module).

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Alphabetic index
Alternator Failure E04..... 7.02B [P.15]
Alarms.............................. 4.10, 8.0
Alarm output control....... 7.09, [39]
Alarm inputs.................... 7.06, 8.0
Automatic......................... 2.3
Battery, Alarms................ 4.10 [Er.13]
Belt break ........................ 4.10 [Er.02]
Choke, control................. Table 7.03 [P.22]
Characteristics................. 14.0
Charger Alternator........... 11.0, 7.03 [P.26]
Clear the memory ............ 12.3
Contactors........................ 2.21, 18.0
Connectors, Plugs........... 19.0
Crank timing.................... 7.03A [P.19]
Current Transformer ....... 7.02B [P.18]
Cooling down time .......... 7.03A [P.24]
Defaults............................ 6.20
Dimensions...................... 19.0
Display............................. 3.0
Display Messages ........... 4.10, 4.20
Er.0--8.. Error codes........ 4.10
[FAIL] Memory error........ 4.10 [FAIL]
Engine Running............... 11.0
Emergency input............. 4.10[Er.08]
Events.............................. 4.30
Fail to Start ...................... 4.10[Er.11], P.34
Fail to Stop....................... 4.10[Er.07]
Front Panel ...................... 1.0 Figure 1
Frequency........................ 7.02A [P.11][P.12]
Fuel Level......................... 7.04 [P.36 - - 38]
Generator Voltage........... 7.02 [P.9] [P.10]
Generator Frequency...... 7.02 [P.11] [P.12]
Generator Failure E04..... 7.02B [P.15]
Glow Plugs....................... 7.03 [P.22]
Hi-U, Over Voltage........... 7.02A [P.10]
Hour Counter................... 9.0
Horn Programming.......... 7.05 [P.50]
Inputs (Programmable)... 7.06, 7.07
LED, LEDs........................ 5.0, 2,21, 2.3
Lamp Test........................ 5.1
Lo-U, Under Voltage........ 7.02A [P.09]
Lock, Remote Lock E03 .. 4.10
Low Battery voltage ........ 4.10,[Er.13]
Log Events.........................4.30
Mains Failure................... 7.01A [P.01]
Mains Restore.................. 7.01B [P.02]
Maintenance timers......... 7.05, 16.40
Mains Simulation............. 7.07 [15]
Measurements....................3.0
Memory clear......................12.3
Memory Events...................4.30
Messages (Display)............4.0
Manual.................................2.2
Outputs (programmable) ...7.09
Operation modes................2.0
Overload .............................4.10 [Er.05]
Overload (external).............7.07 [20][21]
Over Frequency..................4.10 [Er.01]
Over Voltage HI-U...............4.10 [HI-U]
Parameters .........................7.0
Password............................6.40
Parameters reading............6.30
Periodic test........................7.05 [P.41][P.42]
Program, Programming .....6.0
Pre Glow .............................7.03[P.22]
Pump Set control ...............10.0
Power Supply .....................14.0
Push buttons......................2.0, 2.2
Rest time.............................7.03A [P.21]
Rental Programming..........7.05 [P.47]
R.P.M...................................7.02B [P.16]
Settings (Parameters) ........7.0
Service timers.....................7.05, 16.40
Single Phase operation......16.30
Specifications.....................14.0
Start.....................................2.2
Start Attempts ....................7.03B [P.31]
Starting Failure...................4.10 [Er.11]
Stop, Stop solenoid............7.03A [P.25]
Temperature .......................7.03B [P.30]
Terminal description..........19.0
Test, Remote Test .............7.07 [10] [11]
Test mode..........................2.4
Test timeout.......................16.60
Transformer, Current.........7.02B [P.18]
Troubleshooting.................13.0
Under Voltage Lo-U............7.02A [P.09]
Under Frequency................7.02A [P.11]
Voltage measurements......3.0
Warm-Up time.....................7.03A [P.23]
Wiring diagram...................18.0

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Be242 OEM's Manual - Contents
1.0 Introduction......................................................page 4
2.0 Selecting a Mode of operation ....................... page 4
2.1 OFF mode........................................................page 5
2.2 MANUAL mode................................................ page 5
2.3 AUTO mode..................................................... page 6
2.4 TEST mode......................................................page 6
2.5 PROGRAM mode............. ..............................page 6
2.6 CALIBRATION mode........ ..............................page 6
2.7 TROUBLESHOOTING mode .......................... page 6
3.0 DISPLAY measurements................................. page 6
4.0 DISPLAY messages and Log Events............. page 8
4.10 Alarm Messages........................................... page 8
4.20 Miscellaneous Messages .............................page 8
4.30 Log Events / Memory Events........................page 9
5.0 LED indicators description............................. page 9
5.1 Lamp and Display Test ..................................page 9
6.0 PROGRAMMING & READING parameters..... page 9
6.10 Enter the Programming Mode...................... page 9
6.11 Enter the password....................................... page 9
6.12 Programming................................................page 10
6.13 Saving...........................................................page 10
6.14 Exit without saving........................................page 10
6.20 Re-programming default settings .................page 10
6.30 Reading the parameters...............................page 10
6.40 Activating the password................................page 11
6.50 Changing the password................................page 11
6.60 Removing the password............................... page 11
7.0 Programmable Paramètre...............................page 11
Table 7.01A-B Mains Failure Control................... page 12
Table 7.02A-B Generator Parameters ................ page 13
Table 7.03A-B Engine Parameters .....................page 14
Table 7.04 Alarms Options..................................page 15
Table 7.05 Miscellaneous...................................page 15
Table 7.06 Programmable Inputs........................ page 16
Table 7.07 Input Options list................................page 16
Table 7.08 Programmable Outputs .....................page 16
Table 7.09 Outputs Options list ........................... page 17
8.0 Alarms, Warnings & Shutdowns....................page 18
9.0 Hour Meter........................................................page 18
10.0 Be242; settings for Pump Set......................page 18
11.0 Engine Running detect ............................... page 19
12.0 Memory Clear................................................ page 19
13.0 Troubleshooting guide................................. page 19
14.0 General Specifications.................................page 21
15.0 Software Upgrades & Revisions ................. page 21
16.0 Application Notes .........................................page 22
17.0 Interfacing with remote Auto start.............. page 22
18.0 Typical application wiring............................. page 24
19.0 Dimensions & Connections.........................page 25

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 4
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Section 1.0 Introduction
The Be242 integrates a 3-Phase Automatic Mains Failure controller and a Generating Set controller. The Be242
provides visual indication by means of LEDs and Displays for Engine & Electrical parameters, Alarms and Status
of the contactors. It provides a RS485 (MODBUS-RTU) interface for remote control & monitoring. You can read
the current of the load by connecting the CTs on load side. Figure 1 presents the panel layout. The Be242 is
connected to the Be242 Relay Board via 25 poles shielded cable.
Figure 1: Front Panel layout
Section 2.0: Selection of the Mode of operation
When you apply the DC supply, the display indicates for a second, the version of the software (example 1.0.01)
and the detected kind of battery (12V or 24V) Should the battery supply to be lower than 7,5V, the BE242 will
trigger the [ER.13] alarm code; the software will not run. The modes of operation are selected by pushbuttons
and indicated by means of green LED indicators as shown below:
Note: default programming for emergency input is ‘normally closed ‘. To inhibit the alarm [Er.08]
you are required to connect terminal JH4 to JH1 (Emergency input). You can reverse the contact by
changing the type of the contact (see P35 on table 7.04).
TEST AUTO
OFF
MAN OFF TEST AUTO
Pushbutton
Pushbutton
Pushbutton Pushbutton
MANUAL Mode
green LED
Operating Modes Pusbuttons
TEST Mode
green LED AUTO Mode
green LED
Operating Modes
Alarm
messages
Display control
& indicators
Alarm
acknowledge
pushbutton
Mode
pushbuttons & LEDs
Contactors
Control
Manual Engine
Control
Engine
A
V
Hz / R.P.M.
h / Prog.
F1
F2
F3
F4
F5
F8
F9
F6
F7
F10

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Every time the power supply is switched on, if the BE242 was in TEST or AUTO prior to power down, the Be242
returns to the “AUTO” mode. In the other cases, the Be242 will enter the OFF mode. The following table
indicates the modes of operation.
Mode
Pushbutton
Indication
Section
OFF
[ OFF ]
All turned Off, dot on display
2.1
MANUAL
[ MAN ]
Green LED on the button
2.2
AUTO
[AUTO]
Green LED on the button
2.3
TEST
[TEST]
Green LED on the button
2.4
PROGRAMMING
see section 6.0
and 13.0
-
The display shows [ProG]
6.0
TROUBLESHOOTING
Various messages
13.0
2.1 OFF mode
Push the button [OFF] to enter the OFF mode. The OFF mode clears the fault alarms and allows you to read or
program parameters (section 6.0). The Display and LEDs are turned off and a dot on the display will blink slowly.
Push one of the pushbuttons on the front panel to activate the display.
2.2 MANUAL mode
Note: default programming for emergency input is ‘normally closed ‘. To inhibit the alarm [Er.08]
you are required to connect terminal JH4 to JH1 (Emergency input). You can reverse the contact by
changing the type of the contact (see P35 on table 7.04).
The MANUAL mode allows manual control of Engine and Contactors.
Instructions
Push the [MAN] pushbutton to select the MANUAL mode. Push
the [START] pushbutton until engine starts; the display indicates
the message [. . . .] during the starting attempts (and [! ! ! !] during
the preheat).
When the engine is running, the green LED turns on. To stop the
engine, push the [STOP] pushbutton until the [StOP] message
appears on the display. If the engine has already stopped, it is
possible to reset the STOP sequence by pressing the [STOP]
pushbutton.
START
Pushbutton
Manual Engine Control
STOP
Pushbutton
Engine Running
green LED

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2.21 Contactors: Manual control To control the contactors follow the instructions:
2.3 AUTO mode
Push the [AUTO] pushbutton until the green LED illuminates. The engine starts when the Be242 detects a
Mains failure (see table 7.01A). The Contactor of the MAINS (KM) opens after the BREAKER timing. After
the warm-up time, if the Voltage and Frequency are within the settings, the contactor of the Generator (KG)
will close. If the Mains restores, the KG will open. The KM will close following a programmed changeover
timing. The Engine will stop after a cooling down time (see tables 7.02 and 7.03). If the engine shuts down,
the KM closes independently of the Mains status if the [P.48] is [ON] (NFPA-110 mode), otherwise the KM
will close only if the Mains is within programmed settings. In AUTO mode, the Be242 will periodically test
the engine if the parameters [P.41] and [P.42] have been programmed. During this test, the green LED of
the AUTO mode will continue to blink. In AUTO mode, the Be242 can start and stop the engine according to
programmed inputs (see Tables 7.06 and 7.07 options [10] & [11] for example).
Note: when the Mains (or Generator) is in stable condition, the green LED ‘V’ is permanently ON. When
voltage or frequency is outside limits, the green indicator ‘V’ blinks slowly (see table 7.01-7.02).
2.4 TEST mode
Push the [TEST] pushbutton until the green LED illuminates. The Be242 starts the engine and transfers the load
to the Generator if [P.17] is [on]. To stop the engine, select the AUTO mode (if Mains is present) or select the
OFF mode. If you push the [STOP] pushbutton when the Be242 is in AUTO or TEST, the [Er.09] will energize.
To clear the alarm, select the OFF mode (section 8.0).
2.5 PROGRAM mode
The PROGRAM mode allows parameter programming and modifications of settings. A password can be set to
protect the panel from unauthorized access (see 6.0).
2.7 TROUBLESHOOTING mode
The TROUBLESHOOTING mode is used to diagnose system faults (see 13.0).
Instructions
Select the MANUAL mode, start the engine (see
above) and wait for voltage presence.
Push the [ I ] (KG) pushbutton to close the
contactor of the Generator. To transfer the Load
to Mains, push the [I] (KM) pushbutton (the [KG]
will open). To open a Contactor, push the [O]
pushbutton. In manual mode the CHANGEOVER
timer lasts one second. The green indicators of
voltage (Mains or Generator) blink when the
voltage or frequency is out of limit (see the Mains
and Generator parameters on table 701-7.02).
The indicators are off when the voltage is lower
that 48Vac
KM
KG
KG
Pushbutton
(push to close)
Contactors Control Panel
KG-closed
indicator
(Green)
KM-closed
indicator
(Green)
Generator
Presence LED
(Green)
Mains
Presence LED
(Green)
[ O ]Pushbutton
(push to open)
KM
Pushbutton
(push to close)

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Section 3.0 Display measurements
The Be242 features a 4 Digit display, two pushbuttons and 5 yellow LEDs as indicated below.
Use [←F8] and [F9→] to select a menu. Use [ACK-F10] (see the layout in section 1.0) to display the name of the
parameter. The OFF mode of operation shuts down the display and turns on the dot on the right side of it. Push
a button to turn on the panel. The following table includes the functions of the display.
Display Function
Display indications (*)
Pushbutton(s)
Current of the Generator
(0 up to 1000A)
[AXXX] Ampere L1
[-XXX] Ampere L2
[_XXX] Ampere L3
[←F8] or [F9→]
A ac menu
yellow indicator
[A -G]
[ACK-F10]
Voltage of the Generator
(60V up to 998V)
[GXXX] Volt L1-L2
[-XXX] Volt L2-L3
[_XXX] Volt L1-L3
[←F8] or [F9→]
V ac menu
yellow indicator
[U -G]
[ACK-F10]
Voltage of the Mains
(60 V up to 998 V). If the
Mains is simulated, the
display will show the
message [n-on]
[nXXX] (V R-S)
[-XXX] (V S-T)
[_XXX] (L R-T)
[←F8] or [F9→]
[U -on]
[ACK-F10]
Generator Frequency
(20Hz up to 70Hz)
[GXXX] Hz
[←F8] or [F9→]
Hz/RPM menu
yellow indicator
[H - G]
[ACK-F10]
Mains Frequency
(20Hz up to 70Hz)
[nXXX] Hz
[←F8] or [F9→]
[H - n]
[ACK-F10]
Speed
(600RPM up to 4000RPM)
[XXXX] RPM
[←F8] or [F9→]
Hz/RPM menu
yellow indicator
[SPd]
[ACK-F10]
Battery Voltage
(5.5 Vdc up to 36 Vdc)
[bXX.X] Vdc
[←F8] or [F9→]
Engine
yellow indicator
[batt]
[ACK-F10]
Charger Voltage
(3.0 Vdc up to 36 Vdc)
[cXX.X] Vdc
[←F8] or [F9→]
Hours-count:0 up to
50,000 h.
[XXXX] h
[←F8] or [F9→]
h/Prog menu
yellow indicator
[Hour]
[ACK-F10]
(*)NOTE: X indicates a numerical digit, if the measurement is out of range, the display will indicate [- - - -]
[ F9 ]
Display control
[ F8 ] control F8 F9
4Digit Display
OIL-°C-%FUEL-Vb
Display menu
h-count - Programming
Display menu
Frequency-Speed
Display menu
Vac-Generator-Mains
Display menu
Generator-Current
Display menu
Pushbutton Pushbutton
EngineA VHz / R.P.M. h / Prog.
Display and Menus

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Section 4.0 Display messages and LOG Events
The Be242 displays alarms (table 4.10) and messages (table 4.20). The presence of alarms is indicated by the
blinking message [ ALAr.]. Push the [→F9] pushbuttons to display the alarms one by one. Push the [←F8]
pushbutton to display additional information (section 8.0).
Table 4.10: Alarm messages
Display
Message
Description of the Alarm
Display
Message
Description of the Alarm
[Er.01]
Over Frequency Shutdown (see [P.12])
[Er. 14]
Low Oil Pressure Shutdown
(Pressure switch connected to input #35)
[Er.02]
Engine Belt Break Shutdown (see [P.26])
[Er. 15]
Temperature Switch Shutdown
(Temperature switch connected to Input #34)
[Er.03]
Remote LOCK Shutdown (see 7.07 option
[13])
[Hi-C]
Over Current Shutdown or Warning (see
[P.13]).
[Er.04]
Alternator Failure Shutdown
[Hi-U]
Over Voltage Shutdown (see [P.10])
[Er.05]
Overload Warning (see 7.07 option [20])
[Lo-U]
Under Voltage Shutdown (see [P.09])
[Er.05]
Overload Shutdown (see 7.07 option [21])
[InP.2]
Input 2 Shutdown / Warning (see 7.07)
[Er.06]
Under Frequency Shutdown (see [P.11])
[Er.07]
Fail To STOP Shutdown (see parameter
P.34, section 7, table 7.04)
[InP.3]
Input 3 Shutdown / Warning (see 7.07)
[Er.08]
Emergency Shutdown (see parameter
P.35, section 7, table 7.04)
[InP.4]
Input 4 Shutdown / Warning (see 7.07)
[Er.09]
Emergency Shutdown triggered by Front
Panel (Stop or [0] pushbutton)
[FUEL]
Low Fuel level warning
[Er.10]
Maintenance SERVICE warning
(see parameters P44,P45 and P46)
[rEnt]
The rental contract is going to expire (48
hours remaining). Push [←F8] to display the
value.
[Er.11]
Fail To START Shutdown
[FAIL]
There is an internal failure or memory error in
the BE242 controller (see 12.3)
[Er.12]
Low Fuel Shutdown
[Er. 13]
Battery Voltage Alarm. Push [←F8] to display
the value. (allowed battery limits: 11,8V-
15,5V & 23,6V-31V). Under 7,5V, the Be242
will not run.
4.20 Miscellaneous messages & description
[rESt]
The Be242 is counting the rest time between
the starting attempts
[ProG]
The Be242 is in program mode
[n-on]
MAINS simulated by an input programmed with
option [15] (see table 7.07).
[. . . .]
The Be242 is cranking the engine
[ ' ' ' ' ]
The Be242 is performing the pre-glow (P22)
[tEst]
The Be242 is in Test mode
[StoP]
The Be242 is stopping the engine (P25)
[ - - - - ]
Measurement out of range or disabled
[U-uP]
Warm up time of the engine before closing the
contactor of the generator (P23).
[CooL]
The engine is running off load for
cooling.
[ dEL]
Delay time before cranking (P.19,table 7.03A)

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4.30 LOG EVENTS
To have access to the LOG events follow the instructions:
-Push the [OFF] button.
-Push and hold the [STOP] button until the message [Hist.] appears on display (approx. 10 seconds).
-Release the [STOP] button.
-Using [←F8] and [F9→] you can browse the events E01 up to E100.
-Push the [STOP] button to display the code of the EVENT (see table 4.10). The message [----] indicates ‘No
Event’ in the memory.
-To quit the LOG EVENTS push the [OFF] button.
Note: to cancel the LOG EVENTS push the [←F8] and [F9→] buttons simultaneously until the display blinks one
time (approx. 10 seconds).
Section 5.0 LED indicators 5.1 Lamp and Display Testing
To test the LEDs and DISPLAY push the [OFF] pushbutton; the display turns off (OFF mode of operation). Push
and hold the [←F8] and [F9→] pushbuttons simultaneously. The LEDs and DISPLAYs remain energized as long
as the pushbuttons are pressed and held together.
Section 6.0 Programming and reading the parameters
The 4-digits display indicates the code of a parameter and its setting. Section 7.0 lists all parameters. To enter
the Programming Mode, use the following instructions. To use a password see sections 6.40, 6.50 and 6.60.
Monitoring via TCP-IP is also allowed.
6.10 Enter the Programming Mode
1) - Provide a voltage from a battery supply of over 11.5 V. Push the [OFF-F7] pushbutton to enter the OFF
mode; the LEDs and display turn OFF (the dot on the right side of the display will start to blink)
2) - Push and hold the [F9→] and [ACK-F10] pushbuttons simultaneously for about 5 seconds, until the yellow
Led [h/Prog.] starts to blink. When the display indicates [ProG], release the buttons.
3) - If the Be242 is password protected (*), the messages [PASS] and [42.42] will appear in sequence; you are
required to follow the instructions of Table 6.11. If the Be242 is not password protected, the programmable
parameter [P.0] will be displayed and the Be242 is ready for programming (section 6.12, step-2).
(*) Note: the password consists of 2 groups of digits ranging from 0 to 99. Example: [12.34]; 12 is the 2-digit code
on the left, and 34 is the 2-digit code on the right.
TABLE 6.11: Enter the PASSWORD
1) - Push [TEST] or [AUTO] in order to choose the proper code (between 00 and 99, except 42).
2) - Push [F9→] to select the 2 digits on the right side.
3) - Push [TEST] or [AUTO] in order to choose the proper code (between 00 and 99, except 42).
4) - Push [ACK-F10] to confirm the password; if the password is ok, the Be242 will indicate [P.0] and the unit is ready
for programming. If the password is wrong, the display will indicate [4242] and you are required to insert the correct
password. If you lose the password, the unit must be returned for service.

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6.12 Programming
1) - Enter the Programming mode (see section 6.10).
2) - Press the [←F8] or [F9→] pushbutton to select a parameter (see the list in section 7.0).
3) - To adjust the parameter, press [START-F1] and [TEST ↑] (or [AUTO ↓]) simultaneously.
(example: [P.10] = [500]; the Overvoltage limit is set to 500 Volt. If you want to set 450, push and hold
[START-F1] and [AUTO ↓] until the display indicates 450 )
4) - To adjust additional features of the same parameter, press [STOP-F2] and [TEST ↑] (or [AUTO ↓])
simultaneously (example: [P.10] [10'']; the timing delay of Overvoltage is set to 10 seconds)
5) - Press the [←F8] or [F9→] pushbutton to select another parameter.
6) - Follow the instructions of section 6.13 or 6.14 according to your needs.
6.13 Saving
Press and hold the [ACK-F10] and [F9→] pushbuttons simultaneously until the [SaVE] message appears
(approximately 5 seconds); the Be242 saves the settings and will enter the OFF mode. You can select the mode
of operation as indicated in section 2.0.
Note: if the memory fails, the message [FAIL] will appear. Try again to save or remove the power supply. If the
message persists, the Be242 is damaged and should be returned to Bernini Design for repair.
6.14 Exit without Saving
Press the [OFF] pushbutton to enter the OFF mode without saving the parameters. You can select a mode of
operation as indicated in section 2.0.
6.20 Re-programming Default settings
The parameters of the Be242 are programmed in factory with default settings (section 7.0). To restore them,
enter the Programming Mode (section 6.10). When the message [P.0] appears, follow the instructions:
1) - Press and hold the [←F8] and [F9→] pushbuttons simultaneously until the display blinks twice. Select option
2A or 2B according to your needs.
2A) - Press the [OFF] pushbutton to exit the procedure without saving the parameters.
2B) - Press and hold the [ACK-F10] and [F9→] pushbuttons simultaneously until the [SAVE] message appears
(approximately 5 seconds); the Be242 saves the settings and the display will indicate [P0]. Push the [OFF]
pushbutton in order to enter the OFF mode.
6.30 Reading the parameters
To read the parameter settings, follow the instructions:
1) - Press the [OFF] pushbutton until the LEDs and display turn off (OFF mode of operation).
2) - Push the [←F8] or [F9→] pushbutton to select a parameter (section 7.0).
3) - Push [START-F1] to display the setting of the parameter (example: [P.10] > [450]; the Overvoltage limit is
set to 450 Volt).
4) - Push [STOP-F2] to display the setting of the sub-parameter (example: [P.10] > [2'']. The timing delay of
Overvoltage is set to 2 seconds).
5) - Push the [←F8] or [F9→] pushbutton to select another parameter.
NOTE: if the pushbuttons remain inoperative for more than 5 minutes, the Be242 enters the OFF mode.

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 11
11
6.40 Activating the password
1) - Enter the programming mode as indicated in section 6.10.
2) - When the display shows [P.0], push the [ACK-F10] pushbutton for about 10 seconds until the display shows
[PPPP]. When the display will indicate [4242], release the button. The two digits on the right will blink.
3) - Push [TEST] or [AUTO] in order to choose a code.
4) - Push [←F8] to select the 2 digits on the left side. Repeat step 3) in order to choose a code
5) - Press the [OFF] pushbutton if you want to exit the procedure without activating the password.
6) - Press and hold the [ACK-F10] and [F9→] pushbuttons simultaneously until the [SAVE] message appears;
the Be242 saves the password and remains in PROGRAM mode. To exit, push the OFF pushbutton. You can
change the password at anytime as indicated in section 6.50.
6.50 Changing the password
1) - Enter the programming as indicated in section 6.10 and table 6.11. When the display indicates the
parameter [P.0], push and hold the [ACK-F10] pushbutton for about 10 seconds until the messages [PP.PP] and
[4242] appear. The two digits on the right side of the display will blink.
2) - Push [TEST] or [AUTO] in order to choose a code.
3) - Push [←F8] to select the 2 digits on the left side. Repeat step 3) in order to choose a code
4) - Press the [OFF] pushbutton if you want to exit the procedure without activating the password.
5) - Press and hold the [ACK-F10] and [F9→] pushbuttons simultaneously until the [SAVE] message appears
(approximately 5 seconds); the Be242 saves the password and remains in PROGRAM mode. To exit, push the
OFF pushbutton.
6.60 Removing the password
1) - Enter the programming mode as indicated in section 6.10 part 3 (you are required to use the old password).
2) - When the display indicates the parameter [P.0], push and hold the [ACK-F10] pushbutton, for about 10
seconds until the display indicates in sequence [PPPP] and [4242]. The two digits on the right side will start to
blink. The code [4242] disables the use of the password. Follow step 3 of 4 according to your needs.
3) - Press the [OFF] pushbutton if you no longer want to remove the password (exits the procedure).
4) - Press and hold the [ACK-F10] and [F9→] pushbuttons simultaneously until the [SAVE] message appears
(approximately 5 seconds); the Be242 saves the code [4242] that disables the password. The Be242 remains in
PROGRAM mode. To exit, push the OFF pushbutton.
6.70 Loosing the password
In case you loose the password follow the steps:
- remove the supply
- push and hold the [ACK] and [>] push buttons
- apply the supply; a 4 digit code appears on the display
- send the code to [e-mail] together with your credentials.
- you will receive the new password in 24 hours.
Section 7.0 Programmable Parameters
The programmable parameters are divided into classes as indicated below.
7.01 - A, B - Mains Failure Control 7.07 - Input Options List
7.02 - A, B - Generator Parameters 7.08 - Programmable Outputs
7.03 - A, B - Engine Parameters 7.09 - Output Options table
7.04 - Alarms Options
7.05 - Miscellaneous
7.06 - Programmable Inputs

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 12
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Table 7.01A - Mains Failure Control Note: [ xx " ] = seconds, [ xx ' ] = minutes, [xxh ] = hours
Parameter Code & Description
Default
Min
Max
P.0
Mains Contactor control (KM). If the Mains Failure persists for more than [P.0]
(seconds or minutes), the Mains contactor will open and the [P.1] timer will start to
count. The Mains contactor will close only after the [P.2] timing.
[ 5’’]
0
59 mins
P.1
Mains Failure time. After the [P.0] timing (see above), the engine will start if the
Mains Failure persists for the [P.1] time.
[ 5’’]
0
23 h
P.2
Mains Restore time. The Be242 transfers the Load to the Mains once the MAINS
is stable for at least [P.2] (seconds, minutes or hours). During [P.2], the engine will
continue to run ON-LOAD. After [P.2], the [P.24] timer will take place to run the engine
OFF-LOAD (the contactor of the generator will open).
[ 5’’]
0
23 h
NOTE: WHEN VOLTAGE OR FREQUENCY IS OUTSIDE LIMITS, THE GREEN INDICATORS BLINKS SLOWLY. DANGEROUS
VOLTAGE MAY BE PRESENT INTO THE CONTROLLER EVEN IN CASE THE INDICATORS ARE OFF
Table 7.01B - Mains Failure Control Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Default
Min
Max
Options
P.3
Contactors changeover. This timing introduces a delay
between the switching of the contactors.
[ 2’’]
0.1secs
15.0secs
-
P.4
Under voltage limit. If the Phase-to-Phase voltage falls
under this limit, the [P.0] timer will energize.
[320]
60V
998V
[oFF]
P.5
Over voltage limit. If the Phase-to-Phase voltage rises
above the limit, the [P.0] timer will energize.
[500]
60V
998V
[oFF]
P.6
Under Hz limit. If the Phase-to-Phase frequency falls
under the limit, the [P.0] timer will energise.
[47.0]
20.0Hz
70.0Hz
[oFF]
P.7
Over Hz limit. If the Phase-to-Phase frequency rises
above the limit, the [P.0] timer will energise.
[53.0]
20.0Hz
70.0Hz
[oFF]
P.8
Phase Selection. It allows 3-Phase or Single Phase control
of voltages and currets. The following options are available:
[0] 3 Phase V Mains & 3 Phase Generator
[1] 3 Phase V Mains & 1 Phase Generator
[2] 1 Phase V Mains & 3 Phase Generator
[3] 1 Phase V Mains & 1 Phase Generator
[4] 1 Phase V Mains & 1 Phase Generator (X1.73)(*)
See section 16.30 for details and connections.
[0]
0
3
-
Apply option [4] when, despite the fact that
you connect Mains and Generator in single
phase, you prefer to read the equivalent 3-
phase system reading. Please not that this
reading is accurate as long as the neutral
voltage is perfectly balanced. You may be
required to adjust Over/Under volatge limits.

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 13
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Table 7.02A - GENERATOR PARAMETERS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Mode (°)
Default
Min
Max
Options
P.9
Under voltage (Push F1)
xxxxxxxxxxxxxxxxx
1
[320]
60 V
998 V
[oFF]
Delay (Push F2)
[ 6" ]
1 sec
15 secs
-
P.10
Over voltage (Push F1)
2
[500]
60 V
998 V
[oFF]
Delay (Push F2)
[ 2" ]
1 sec
15 secs
-
P.11
Under Hz (Push F1)
1
[47.0]
20.0 Hz
70.0 Hz
[oFF]
Delay (Push F2)
[ 6'' ]
1 sec
15 secs
-
P.12
Over Hz (Push F1)
2
[53.0]
20.0 Hz
70.0 Hz
[oFF]
Delay (Push F2)
[ 1" ]
1 sec
15 secs
-
P.13
(*)
Current limit Warning (Push F1)
3
[oFF]
10 A
999 A
[oFF]
Delay (Push F2)
[ 1" ]
1 sec
15 mins
-
P.14
(*)
Over current shut down (Push F1)
1
[oFF]
10 A
999 A
[oFF]
Delay (Push F2)
[ 1" ]
1 sec
15 mins
-
(°) Mode1: The engine shuts down after a cooling down time ([P.24]). (°) Mode2: The engine shuts down without a cooling down time.
(°) Mode3: The Be242 provides a warning if the parameters rise above the setting for the specified timing.
(*) The setting is allowed in step of 5 Amps by using the pushbutton on Be242 or in step of 1Amp by using programming by Computer.
NOTE: WHEN VOLTAGE OR FREQUENCY IS OUTSIDE LIMITS, THE GREEN INDICATORS BLINKS SLOWLY.
VOLTAGE MAY BE PRESENT INTO THE CONTROLLER EVEN IN CASE THE INDICATORS ARE OFF
Table 7.02B - GENERATOR PARAMETERS Note: [ oFF ] = disabled, [ on ] = enabled
Parameter Code & Description
Default
Min
Max
Options
P.15
Alternator failure options. The alarm [E04] energizes if the
voltage (or the frequency) is lower than the setting of P.9 (or
P11) for more than 150 seconds.
[oFF]
-
-
[on] [oFF]
P.16
Alternator number of Poles. Options [2] or [4] allow you to
display the engine speed.
[ 4 ]
2
4
-
P.17
Generator Contactor Control. The option [off] inhibits Load
transfer to the generator in TEST mode (or remote TEST)
when MAINS is present.
[oFF]
-
-
[on] [oFF]
P.18
CT size (/5Aac).
[100]
50 A
1000 A
-

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 14
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Table 7.03A - ENGINE PARAMETERS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Default
Min
Max
Options
P.19
Crank delay (it delays the cranking)
[ 2" ]
0
15 secs
-
P.20
Crank time (maximum cranking time if the
engine fails to start during the attempt)
[ 5" ]
1 sec
15 secs
-
P.21
Rest time (pause of time between starting
attempts)
[ 5" ]
3 secs
15 secs
-
P.22
Pre-glow time (see ‘Modes’ for the mode of
operation. (Push F1)
[ oFF ]
1 sec
59 mins
[ oFF ]
Modes as indicated below (Push F2)
[ 1 ]
-
-
1-2-3-4
P.23
Engine Warm up time
[ 15" ]
0
59 mins
-
P.24
Engine Cooling time
[ 15" ]
0
59 mins
-
P.25
Stop Solenoid timing (Energized to stop)
[ 15" ]
1 sec
59 mins
-
P.26
Alternator Crank termination (Push F1)
[ 8.0 ]
3.0 V
30.0 V
[oFF]
Belt break setting (Push F2)
[ 8.0 ]
3.0 V
30.0 V
[oFF]
P.27
Crank termination setting (Generator Voltage)
[ 70 ]
60 V
998 V
[oFF]
P.28
Crank termination (Generator Frequency)
[25.0]
20.0 Hz
70.0 Hz
[oFF]
Table 7.03B - ENGINE PARAMETERS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Default
Min
Max
Options
P.29
NOT USED
P.30
NOT USED
P.31
Crank attempts (numbers)
[ 3 ]
3
15
-
P.32
Purge timing (for Gas fuelled engine)
[ 1" ]
1 sec
15 secs
-
Starting Motor Total rest timing
Pre-glow mode 1
Pre-glow mode 2
Pre-glow mode 3 [ P.21 ]
[ P.20 ]
[ P.22 ]
[ P.22 ]
[ P.26]..27]..28 ]
[ P.22 ]
Pre-glow mode 4 (Choke)
Total rest timing
Crank termination (engine running detect)

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 15
15
Table 7.04 - ALARM OPTIONS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Default
Min
Max
Options
P.33
Alarm bypass (for Oil, Temperature, Auxiliary 2-
3-4 alarms)
[ 5" ]
2 secs
90 secs
-
P.34
Fail to stop alarm control (oFF = inhibited,
on = enabled)
[oFF]
-
-
[oFF]/ [on]
P.35
Emergency contact type (Input JH1-JH4). It
generates the alarm [Er.08].
[n.c.]
-
-
[n.o. / n.c.]
P.36
No fuel bypass timeout (it starts to count when
you activate the Low Fuel Input, terminal #9. It
shuts down the engine after timeout).
[ 5' ]
15 secs
99 mins
[oFF]
P.37
NOT USED
P.38
NOT USED
P.39
Engine Temperature Switch type (input # 12)
[n.o.]
-
-
[n.o. / n.c.]
Table 7.05 - MISCELLANEOUS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Default
Min
Max
Options
P.40
EJP time
[ 5" ]
1 sec
99 mins
-
P.41
Periodic Test interval (see 16.10)
[oFF]
2 hours
9999 h
[oFF]
P.42
Periodic Test duration (see 16.10)
[ 5' ]
1 min
99 mins
-
P.43
Test timeout ([OFF]= no timeout). It limits the
running time in case of TEST initiated by a
MODBUS command. Idle speed control (see
application note in section16.60)
[ 5' ]
1 min
99 mins
[oFF]
P.44
P.45
P.46
Maintenance SERVICE 1 / 2 / 3
(for the use, see section 16.40)
The alarm generated by these parameters
only provides a warning.
[oFF]
1 h
9999 h
[oFF]
P.47
Rental Contract Setting (see section 16.40)
[oFF]
1 h
9999 h
[oFF]
P.48
NFPA - 110 Level 1&2
[on]
-
-
[on]/[oFF]
P.49
NOT USED
P.50
Horn timeout (see section 8.0)
[ 5" ]
5secs
15 mins
[oFF]
P.51
Hour Counter set (over 9999, a dot will appear
to indicate a value multiplied by10. Example
3250. will indicate 32500 hours. In this case
the resolution is 10 hours).
[ 0 ]
0 h
50.000
[oFF]

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 16
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Table 7.06 - Programmable inputs (see options list in table 7.07)
Parameter
Options
Default
Parameter
Options
Default
[InP.1]
NOT
USED
[InP.3]
(terminal
10)
Option
available
[0] - - - [28]
[10]
Contact type
[n.o.][n.c.]
[n.o.]
[InP.2]
(terminal
13)
Option
available
[0] - - - [28]
[13]
[InP.4]
(terminal
14)
Option
available
[0] - - - [28]
[15]
Contac_t
type
[n.o.][n.c.]
[n.o.]
Contact type
[n.o. ][n.c.]
[n.o.]
_
Table 7.07 - Input Options List
Option
Option
[ 0 ]
Off: disables the input
[ 14 ]
Generator simulation ON
[ 1 ]
Immediate Stop
[ 15 ]
Mains Simulated ON
[ 2 ]
Bypass and Stop
[ 16 ]
Front panel LEDs test
[ 3 ]
Cooling and Stop
[ 17 ]
Horn silence
[ 4 ]
Bypass+Cooling and Stop
[ 18 ]
Display Right Pushbutton
[ 5 ]
Warning only (^)
[ 19 ]
Display Left Pushbutton
[ 6 ]
Bypass and Warning
[ 20 ]
Overload Input Warning
[ 7 ]
Remote Manual Mode (^^)
[ 21 ]
Overload Input Shutdown
[ 8 ]
Remote Auto Mode (^^)
[ 22 ]
KG Forced closed
[ 9 ]
Remote Off Mode (^^)
[ 23 ]
KM Forced closed
[ 10 ]
Remote Engine Test
[ 24 ]
KG LED Feedback
[ 11 ]
Remote Generator Test
[ 25 ]
KM LED Feedback
[ 12 ]
Ejp function
[ 26 ]
Idle Engine
[ 13 ]
Remote LOCK
[ 27 ]
Manual START pushbutton
[ 28 ]
Manual STOP pushbutton
(^) The Be242 detects the alarm if the engine is running
(^^) We recommend the use of an AUTO-OFF-MAN switch
7.08 - Programmable Outputs
Parameter Code & description
Default
Parameter Code & description
Default
Options
[Out.1]
Output 1 (terminal 6)
[ 39 ]
[Out.3]
NOT USED
[Out.2]
Output 2 (terminal 5)
[ 28 ]
[Out.4]
NOT USED

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 17
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Table 7.09 - Output Options Table
Option & description
Option & description
[ 0 ]
Output is disabled
[32]
Alarm from Input 2: Shutdown/Warning
[ 1 ]
Under Frequency Shutdown
[33]
Alarm from Input 3: Shutdown/Warning
[ 2 ]
Over Frequency Shutdown
[34]
Alarm from Input 4: Shutdown/Warning
[ 3 ]
Over Current Shutdown
[35]
NOT USED
[ 4 ]
Over Current Warning
[36]
NOT USED
[ 5 ]
Overload Warning or Shutdown (^^^)
[37]
Cumulative Alternator Alarms
[ 6 ]
Over Voltage Shutdown
[38]
Common Fuel Alarms
[ 7 ]
Under Voltage Shutdown
[39]
HORN
[ 8 ]
Alternator Failure Shutdown
[40]
Crank Delay (Start Warning)
[ 9 ]
NOT USED
[41]
Presence of Nominal Mains Parameters
[10]
Low Oil Pressure Shutdown
[42]
Mains Failure Timing
[11]
NOT USED
[43]
Mains Restore Timing
[12]
High Temperature Warning
[44]
KG Status
[13]
Temperature Switch Shutdown
[45]
KM Status
[14]
NOT USED
[46]
Pre-glow MODE 1/2/3/4
[15]
Low Battery Voltage Warning
[47]
NOT USED
[16]
High Battery Voltage Warning
[48]
RENT<48h
[17]
Low Fuel Shutdown (switch)
[49]
RENT=0h (Expired)
[18]
NOT USED
[50]
Engine Running Status
[19]
Fuel Reserve Warning (switch)
[51]
Presence of Nominal Generator Voltage
[20]
NOT USED
[52]
Be242 in OFF MODE (Status)
[21]
NOT USED
[53]
Be242 in MANUAL MODE (Status)
[22]
Emergency Stop Shutdown (Er08)
[54]
Be242 in AUTO MODE (Status)
[23]
Stop Pushbutton Used in AUTO (Er09)
[55]
Be242 in TEST MODE (Status)
[24]
Maintenance SERVICE 1 (Er10)
[56]
Be242 in LOCK MODE (Status)
[25]
Maintenance SERVICE 2 (Er10)
[57]
Be242 runs the Automatic Periodic Test
[26]
Maintenance SERVICE 3 (Er10)
[58]
Cooling Timing
[27]
Engine Belt Break Shutdown
[59]
Warm up Timing
[28]
Fail To START Shutdown
[60]
Cycling mode (Logical OR of engine running and
stop solenoid)
[29]
Fail To STOP Shutdown
[61]
Start Pilot repeat output (it repeats the crank output
terminal #9)
[30]
Idle Speed (see section 16.60)
-
--
[31]
NOT USED
-
--
(^^^) If an input is configured with option [20] or [21] (see table 7.07)

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 18
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Section 8.0 - Alarms, Warnings and Shutdowns
The Be242 features Shutdowns (the engine stops) and Warnings (the engine will continue to run) and provides:
A) - a general indication of alarm presence by means of the message [ALAr.] on the display
B) - 4 configurable outputs for specific alarm indication with more than 40 options (see 7.08 and 7.09)
C) - symbols on the front panel to indicate the most important alarms
D) - display messages indicating warnings and shutdowns (see Table 4.1)
E) - a pushbutton to silence the Horn ([ACK-F10])
Terminal #6 is pre-configured for HORN output (Option 39). A HORN should be externally provided. To silence
the HORN, push the [ACK-F10] pushbutton or wait for the [P.50] to expire (see section 7.05). If the [P.50] is set
to [OFF], the only way to silence the Horn is by means of the [ACK-F10] pushbutton.
To browse the alarm memory push the [→F9] pushbutton. To display alarm details, push the [←F8] pushbutton.
To clear the alarm from the panel, remove the cause of the alarm and then press the [OFF] pushbutton. Table
4.10 in the section 4.0 indicates all alarms.
Section 9.0 Hour Meter
To clear or pre-load the counter, use the following instructions:
1) - Enter the programming mode as indicated in sections 6.10 & 6.20
2) - Select the parameter [P.51] by means of the [←F8] or [F9→] pushbutton.
3) - Press the [START-F1] and [TEST ↑] to set a value. If you set [0], you will cancel the [h-counter]. If you set a
value between 1 and 50000, you will pre-set the counter. Follow steps 4A) or 4B) according to your needs.
4A) - Press and hold the [ACK-F10] and [F9→] pushbuttons simultaneously until the [SaVE] message appears
(for about 5 seconds); the Be242 saves the hour counter in the memory and will enter the OFF mode.
4B) - Press the [OFF] pushbutton to exit the procedure without modifying the counter.
Section 10.0 Be42 for PUMP SETS
If you use the Be242 to control a PUMP SET, we recommend the use of the following settings:
Parameter
Table 10.0: Recommended settings setup
[P.15]
[oFF] (This disables the 'alternator failure alarm')
[Inp.4]
[ 15 ] (This selects the Mains Simulation input mode). Connect a switch (or level switch) to
terminal #14 in order to control the set by remote
[P.41]
[oFF] (This disables the Periodic Test interval)
[P.0]
[ 0 ] (This disables the Breaker delay time)
[P.1]
According to your needs; the engine will start after a delay
[P.2]
According to your needs; the engine will stop after a delay

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 19
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Section 11.0 Engine Running Detect (Charger Alternator)
The Be242 inhibits the starter motor when the engine starts running. When the engine is not running, voltage in
terminal D+/WL of the charger alternator (input #15) is 0 V. As soon as the Be242 starts the engine, a voltage
appears in the D+/WL terminal (0.8 to 2.5 V). When the engine starts running, the voltage of the D+/WL terminal
increases by up to 3 V - 6 V. When the engine runs, the voltage reaches 14 V (28 V) needed to charge the
battery. The safest point to disconnect the starter motor is between 6 V to 10 V. The default parameter of [P.26]
is 8.0 V. This value is recommended for engines using 12 V batteries. For 24 V batteries, we recommend that
you set the threshold to 16 V.
For safe calibration, be sure that the green ‘ENGINE RUNNING’ LED on the front panel is off during all of the
starting attempts. The Charger Alternator voltage can be displayed in the 'Engine menu' as indicated in the
section 3.0. For Flywheel chargers, the reading is not accurate. The [P.26] setting, in this case, expresses only a
proportional factor.
The Be242 also uses the output of the Generator in order to disconnect the crank motor. Parameters [P.27] and
[P.28] set the crank termination. These parameters do not affect the status of the green ‘ENGINE RUNNING’
LED.
NOTE: THE ‘ENGINE RUNNING’ LED MUST BE LIT WHEN THE ENGINE RUNS. USING THE ENGINE
WITHOUT THIS SIGNAL MAY BE DANGEROUS.
Normally, using a diesel engine, we recommend enabling the BELT BREAK protection. This is accomplished by
programming a voltage setting in the [P.26] sub-menu. To test the efficiency of this protection, disconnect
terminal D+ from the charger alternator and connect to ground the #15 terminal. This protection is delayed by 15
seconds.
Section 12.0 - Memory Reset
12.3 - To clear the Memory
-Remove the supply. Push and hold the [I-F3] & [I-F5] pushbuttons simultaneously and apply the Vdc supply.
-As soon as the message AUTO-TEST appears, release the pushbuttons; the display will indicate [ F1].
-Push [F1] and then push, one by one, all pushbuttons indicated by the message on display.
- After pushing the last pushbutton ([AUTO]), the message [-EPP] will appear; wait a few seconds.
- The memory, now, is erased. The Be242 will use the factory-programmed parameters (defaults).
- Remove the supply and re-program the controller according to your need. We always recommend that you
program a password in order to limit the access (see section 6.40).
Section 13.0 Troubleshooting Guide
The Basic Troubleshooting Guide is intended to provide you with a guide to problems that you may experience
with the Be242. We recommend that you disconnect the unit from the panel and set up the troubleshooting
application circuit as indicated in section 13.1. This procedure should only be carried out by qualified personnel.
To exit the Troubleshooting, remove the Vdc supply at anytime
! W A R N I N G ! High voltage is present inside this instrument. To avoid electric-shock hazard,
operating personnel must not remove the protective cover. Do not disconnect the Earth connection. Any
interruption of the grounding connection can create an electric shock hazard. Before making external
connections, always ground the B42 first by connecting the control panel to ground.

Be242 Be242RB OEM's Manual V3.X.XX - January - 2021 page 20
20
Follow the instructions:
A) - Remove the battery power supply; disconnect all connectors, disconnect the Mains/Generator plugs.
B) - Push and hold the [ACK-F10] pushbutton, apply the Vdc power supply; all LEDs and Display turn on.
C) - Release the button when you have verified all indicators; the LEDs will turn off and the message [- - - -] will
be displayed.
NOTE - At this stage of the TEST, if the display indicates one of the codes contained in Table13.1 or 13.2,
the Be242 is damaged and should be returned to Bernini Design.
To exit the Troubleshooting, remove the Vdc supply at anytime
13.1 Testing the Pushbuttons
A) - Push the pushbuttons on the front panel one by one. The display will show a message according to Table
13.1. As soon as you release all buttons, the message [- - - -] will be displayed.
Table 13.1: Pushbuttons true table
Pushbutton
Display
Code
Pushbutton
Display
Code
[START-F1]
[ F1 ]
[OFF-F7 ]
[ F7 ]
[STOP-F2]
[ F2 ]
[AUTO↓]
[auto]
[ I-F3 ]
[ F3 ]
[TEST↑]
[tESt]
[ O-F4 ]
[ F4 ]
[←F8]
[ F8 ]
[ I-F5 ]
[ F5 ]
[F9→]
[ F9 ]
[ MAN-F6 ]
[ F6 ]
[ACK-F10]
[ F10]
13.2 Testing the Inputs
Push and hold the [ACK-F10] button until the message [-in-] appears. Connect, one by one, inputs #9 to #14 to
the battery minus. For each input, a code will be displayed according to Table 13.2. If more than one input is
connected together (or some of them in short circuit), the display indicates the messages in sequence.
Table 13.2
Terminal number
(function)
Display
Code
Terminal number
(function)
Display
Code
#14 (Input 4)
[ inP 4]
#9 (Low fuel)
[ FUEL]
#10 (Input 3)
[ inP 3]
#12 (Temperature)
[ tEMP]
#13 (Input 2)
[ inP 2]
#11 (Oil pressure)
[ oiL]
[
#JH1-JH4 (Emergency)
[ EMEr]