Bernini Be42 User manual

Be42 OEM's Manual V5.0.XX - December - 2010 page 1
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Be42 OEM’s Manual V5.0.XX
(Consult Section 15.0 for software upgrades & revisions)
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 #1: [phone] mobile #2: 0040 721 241 361
Warranty
Bernini Design SRL (hereinafter "BD") warrants that Be42 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 Be42 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 Be42 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 Be42 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, negligence in use or handling.
This purchase is non-refundable.
This equipment complies with EMC protection requirements
WARNING!! High voltage is present inside the Be42. To avoid electric-shock hazard, operating
personnel must not remove the protective cover. Do not disconnect the Earth connection. The Be42 can
start the engine at anytime. Do not work on equipment, which is controlled by the Be42. 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 Be42 must be suppressed
using flywheel diodes or suppression devices as indicated in section 18.0. In case the
VDC supply can deliver spikes over 40 Vdc we recommend to place a 1 A (fast blow) in
series to the terminal #24.

Be42 OEM's Manual V5.0.XX - December - 2010 page 2
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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]
Calibration........................ 12.0
Characteristics................. 14.0
Charger Alternator........... 11.0, 7.03 [P.26]
Clear the memory ............ 12.3
Contactors........................ 2.21, 18.0
Connectors, Plugs........... 18.0
Connections list .............. 21.0
Crank timing.................... 7.03A [P.19]
Current Transformer ....... 7.02B [P.18]
Cooling down time .......... 7.03A [P.24]
Defaults............................ 6.20
Dimensions...................... 20.0
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
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
Oil pressure .......................7.03B [P.29]
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
Serial interface ...................22.0
Single Phase operation......16.30
Specifications.....................14.0
Software upgrade...............15.0
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..........21.0
Test, Remote Test .............7.07 [10] [11]
Test mode..........................2.4
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

Be42 OEM's Manual V5.0.XX - December - 2010 page 3
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Be42 OEM's Manual - Contents
1.0 Introduction......................................................page 4
2.0 Selection of 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 8
5.0 LED indicators ................................................. 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 9
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 10
6.50 Changing the password................................page 11
6.60 Removing the password...............................page 11
7.0 Programmable Parameter............................... page 11
Table 7.01A-B Mains Failure Control...................page 11-12
Table 7.02A-B Generator Parameters ................ page 12-13
Table 7.03A-B Engine Parameters .....................page 13-14
Table 7.04 Alarms Options..................................page 14
Table 7.05 Miscellaneous...................................page 14-15
Table 7.06 Programmable Inputs........................page 15
Table 7.07 Input Options list................................page 15
Table 7.08 Programmable Outputs .....................page 16
Table 7.09 Outputs Options list ........................... page 16
Table 7.10 Oil Pressure Sensor ..........................page 17
Table 7.11 Temperature Sensor..........................page 17
Table 7.12 Fuel Level Sensor.............................. page 17
8.0 Alarms, Warnings & Shutdowns.................... page 17
9.0 Hour Meter........................................................ page 18
10.0 Be42; settings for Pump Set........................page 18
11.0 Engine Running detect ............................... page 18
12.0 Calibration and Memory Clear..................... page 19
13.0 Troubleshooting guide.................................page 20
14.0 General Specifications................................. page 22
15.0 Software Upgrades & Revisions................. page 23
16.0 Application Notes .........................................page 23
17.0 Interfacing with remote Autostart............... page 24
18.0 Typical application wiring............................. page 25
19.0 Wiring recommendations ............................page 26
20.0 Dimensions & Miscellaneous...................... page 26
21.0 Connections description ............................. page 27
22.0 Serial Interface.............................................. page 27

Be42 OEM's Manual V5.0.XX - December - 2010 page 4
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Section 1.0 Introduction
The Be42 integrates a 3-Phase Automatic Mains Failure controller and a Generating Set controller. The Be42
provides visual indication by means of LEDs and Displays for Engine & Electrical parameters, Alarms and Status
of the contactors. It features 7 modes of operation and provides a RS485 interface for remote control &
monitoring. Figure 1 presents the panel layout.
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 5.0.84)
and the date of production (example 48.10, that means week 48 of year 2010). The modes of operation are
selected by pushbuttons and indicated by means of green LEDs as below indicated:
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
Note: default programming for input #36 is ‘normally closed ‘. To inhibit the alarm [Er.08]
you are required to connect to ground terminal #36 (Emergency input).
Every time the power supply is switched on, if the BE42 was in TEST or AUTO prior to power down, the Be42
returns to the “AUTO” mode. In the other cases, the Be42 will enter the OFF mode. The following table indicates
the modes of operation.
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

Be42 OEM's Manual V5.0.XX - December - 2010 page 5
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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
-
The display shows [ProG]
6.0
CALIBRATION
-
The display shows [-CAL]
12.0
TROUBLESHOOTING
-
Various messages
13.0
2.1 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 energize the display.
2.2 MANUAL mode
Note: default programming for input #36 is ‘normally closed ‘. To inhibit the alarm [Er.08]
you are required to connect to ground terminal #36 (Emergency input).
The MANUAL mode allows manual control of the Engine and Contactors.
2.21 Contactors: Manual control To control the contactors follow the instructions:
START
Pushbutton
Manual Engine Control
STOP
Pushbutton
Engine Running
green LED
Instructions
Push the [MAN] pushbutton to select the MANUAL mode (if in
AUTO mode, push the OFF button first). 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.
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)
Instructions
Select the MANUAL mode, start the engine (see
above) and wait for voltage presence.
Push the [ I ] (KG) pushbuttons 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.
NOTE: for heavy applications, you can
connect external pushbuttons for Start Stop
(see Input options [27]-[28] in table 7.07)

Be42 OEM's Manual V5.0.XX - December - 2010 page 6
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2.3 AUTO mode
Note: default programming for input #36 is ‘normally closed ‘. To inhibit the alarm [Er.08]
you are required to connect to ground terminal #36 (Emergency input).
Push the [AUTO] pushbutton until the green LED illuminates. The engine starts when the Be42 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 Be42 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 Be42 can start and stop the engine according to
programmed inputs (see Tables 7.06 and 7.07).
2.4 TEST mode
Push the [TEST] pushbutton until the green LED illuminates. The Be42 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 Be42 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 from unauthorized access (see 6.0).
2.6 CALIBRATION mode
The CALIBRATION mode allows calibration of all analogue measurements (see 12.0).
2.7 TROUBLESHOOTING mode
The TROUBLESHOOTING mode is used to diagnose system faults (see 13.0).
Section 3.0 Display measurements
The Be42 features a 4 Digit display, two pushbuttons and 5 yellow LEDs as indicated below.
[ 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
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 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 lists the functions of the display.

Be42 OEM's Manual V5.0.XX - December - 2010 page 7
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Display Function
Display indications (*)
Pushbutton(s)
Menu & Led indicator
Current of the Generator
(0 up to 2000A)
[XXXX] Ampere
[←F8] or [F9→]
Aac
menu
Yellow
[A -G]
[ACK-F10]
Voltage of the Generator
(60V up to 998V)
[GXXX] Volt L1-L2
[←F8] or [F9→]
Vac
menu
Yellow
[U -G]
[ACK-F10]
Voltage of the Mains
(60V up to 998V). If the
Mains is simulated, see
option [15] in table 7.07,
the display will show the
message [n-on]
[nXXX] (VL1-2)
[-XXX] (V L2-3)
[_XXX] (L1-L3)
[←F8] or [F9→]
[U -on]
[ACK-F10]
Generator Frequency
(20Hz up to 70Hz)
[GXXX] Hz
[←F8] or [F9→]
Hz/RPM
menu
Yellow
[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
(blinks)
[SPd]
[ACK-F10]
Battery Voltage
(5.5 Vdc up to 36Vdc)
[bXX.X] Vdc
[←F8] or [F9→]
Engine
Yellow
[batt]
[ACK-F10]
Charger Voltage
(3.0 Vdc up to 36Vdc)
[cXX.X] Vdc
[←F8] or [F9→]
[Char.]
[ACK-F10]
Oil Pressure 0.0-20.0 Bar
[PXX.X] Bar
[←F8] or [F9→]
[ bar ]
[ACK]
Temperature 0°-250 °C
[XXX °] °C
[←F8] or [F9→]
[ °C ]
[ACK]
Fuel Level % 0% - 99%
[F XX] %
[←F8] or [F9→]
[FUEL]
[ACK-F10]
Hours-count
(0 up to 9999h)
[XXXX] h
[←F8] or [F9→]
h/Prog
menu
Yellow
[Hour]
[ACK-F10]
Miscellaneous modes
(see sections 6.0,12.0 and 13.0)
[ProG] [-Cal] [tEst]
[←F8] or [F9→]
Yellow
(blinks)
OFF
[ .]
[OFF-F7]
OFF
OFF
(*)NOTE: X indicates a numerical digit, if the measurement is out of range, the display will indicate [- - - -]

Be42 OEM's Manual V5.0.XX - December - 2010 page 8
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Section 4.0 Display messages and LOG Events
The Be42 shows 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.1]
Input 1 Shutdown / Warning (see 7.07)
[Er.06]
Under Frequency Shutdown (see [P.11])
[InP.2]
Input 2 Shutdown / Warning (see 7.07)
[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 paramter
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)
[-oIL]
Oil pressure warning or sensor failure. Push
[←F8] to display the value (see P29).
[Er.10]
Maintenance SERVICE warning
(see parameters P44,P45 and P46)
[ -°C]
Water temperature warning or sensor failure.
Push [←F8] to display the value (see P30).
[Er.11]
Fail To START Shutdown
[FUEL]
Fuel level warning (High or Low) or sensor
failure. Push [←F8] to display the value.
[Er.12]
Low Fuel Shutdown (If Low Fuel input,
terminal #33, is activated for longer than
the P.36 time. See Table 7.04A)
[rEnt]
The rental contract is going to expire (48
hours remaining). Push [←F8] to display the
value.
[Er. 13]
Battery Voltage Warning. Push [←F8] to
display the value.
[FAIL]
There is an internal failure or memory error in
the BE42 controller (see 12.3)
4.20 Miscellaneous [messages] & description
[rESt]
The Be42 is counting the rest time between the
starting attempts
[ProG]
The Be42 is in program mode
[n-on]
MAINS Simulated by an input (see option [15] in
the table 7.07).
[-CAL]
The Be42 is in calibration mode
[. . . .]
The Be42 is cranking the engine
[ ' ' ' ' ]
The Be42 is performing the pre-glow (P22)
[tEst]
The Be42 is in Test mode
[StoP]
The Be42 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)

Be42 OEM's Manual V5.0.XX - December - 2010 page 9
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4.30 LOG EVENTS
To have access to the LOG (Memory) events follow the instructions:
- Push the [OFF] button
- Remove the power supply
-Push and hold the [STOP] button; in the same time apply the Vdc supply (battery)
-When display turns on, 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)
-To quit the LOG EVENTS, remove the power supply
Note: to cancel the LOG EVENTS push [←F8] and [F9→] simultaneously until the display blinks.
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). 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 Parameters
We recommend that you use the BE42-SCADA software for programming. You can also program the controller
by using the pushbuttons on the front fascia. 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.
6.10 Enter the Programming Mode
1) - Provide a voltage from a battery supply of over 11.5V. 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 Be42 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 Be42 is not password protected, the programmable
parameter [P.0] will be displayed and the Be42 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 Be42 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.

Be42 OEM's Manual V5.0.XX - December - 2010 page 10
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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 500Volt. 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 Be42 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 Be42 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 Be42 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 Be42 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 450Volt).
4) -Push [STOP-F2] to display the setting of the sub-parameter (example: [P.10] > [2'']. The timing delay of
Overvolatge 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 Be42 enters the OFF mode.

Be42 OEM's Manual V5.0.XX - December - 2010 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 indicates [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 Be42 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 Be42 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 Be42 saves the code [4242] that disables the password. The Be42 remains in
PROGRAM mode. To exit, push the OFF pushbutton.
Section 7.0 Programmable Parameters
The programmable parameters are divided into classes as indicated below.
7.01A, B - Mains Failure Control 7.07 - Input Options List
7.02A, B - Generator Parameters 7.08 - Programmable Outputs
7.03A, B - Engine Parameters 7.09 - Output Options table
7.04 - Alarms Options 7.10 - Oil Pressure Sensor
7.05 - Miscellaneous 7.11 - Temperature Sensor
7.06 - Programmable Inputs 7.12 - Fuel level Sensor

Be42 OEM's Manual V5.0.XX - December - 2010 page 12
12
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
59mins
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
23h
P.2
Mains Restore time. The Be42 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
23h
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 energise.
[500]
60V
998V
[oFF]
P.6
Under Hz limit. If the Phase-to-Phase frequency falls
under the limit, the [P.0] timer will energize.
[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
(see section 16.30).
[3-P]
-
-
[3-P] [Ph-]

Be42 OEM's Manual V5.0.XX - December - 2010 page 13
13
Table 7.02A - GENERATOR PARAMETERS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Mode (°)
Default
Min
Max
Options
P.9
Under voltage (AUTO & TEST mode)
1
[320]
60V
998V
[oFF]
Under voltage delay
[ 6" ]
1sec
15secs
-
P.10
Over voltage
2
[500]
60V
998V
[oFF]
Over voltage delay
[ 2" ]
1sec
15secs
-
P.11
Under Hz (AUTO & TEST mode)
1
[47.0]
20.0Hz
70.0Hz
[oFF]
Under Hz delay
[ 6'' ]
1sec
15secs
-
P.12
Over Hz
2
[53.0]
20.0Hz
70.0Hz
[oFF]
Over Hz delay
[ 1" ]
1sec
15secs
-
P.13
Current limit Warning
3
[oFF]
10A
2000A
[oFF]
Current delay Warning
[ 1" ]
1sec
15mins
-
P.14
Over current shut down
1
[oFF]
10A
2000A
[oFF]
Over current shut down delay
[ 1" ]
1sec
15mins
-
(°) Mode1: The engine shuts down after a cooling down time ([P.24]). (°) Mode2: The engine shuts down without a cooling down time.
(°) Mode3: The Be42 provides a warning if the parameters rise above the setting for the specified timing.
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).
[500]
50A
2000A
-

Be42 OEM's Manual V5.0.XX - December - 2010 page 14
14
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
15secs
-
P.20
Crank time (maximum cranking time if the
engine fails to start during the attempt)
[ 5" ]
1 sec
15secs
-
P.21
Rest time (pause of time between starting
attempts)
[ 5" ]
3secs
15secs
-
P.22
Pre-glow time (see „Modes‟ for the mode of
operation
[ oFF ]
1sec
59mins
[ oFF ]
Modes (see the figure below)
[ 1 ]
-
-
1-2-3-4
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)
P.23
Engine Warm up time
[ 15" ]
0
59mins
-
P.24
Engine Cooling time
[ 15" ]
0
59mins
-
P.25
Stop Solenoid timing (Energized to stop)
[ 15" ]
1sec
59mins
-
P.26
Crank termination setting (Charger Alternator)
[ 8.0 ]
3.0V
30.0V
[oFF]
Belt break setting (Charger Alternator)
[ 8.0 ]
3.0V
30.0V
[oFF]
P.27
Crank termination setting (Generator Voltage)
[ 70 ]
60V
998V
[oFF]
P.28
Crank termination (GeneratorFrequency)
[25.0]
20.0Hz
70.0Hz
[oFF]
Table 7.03B - ENGINE PARAMETERS Note: [ xx " ] = seconds, [ xx ' ] = minutes, [ oFF ] = disabled
Parameter Code & Description
Default
Min
Max
Options
P.29
Low Oil pressure warning
[oFF]
0.1Bar
20.0 Bar
[oFF]
P.30
High engine temperature warning
[oFF]
40°C
250°C
[oFF]
P.31
Crank attempts (numbers)
[ 3 ]
3
15
-
P.32
Purge timing (for Gas fuelled engine)
[ 1" ]
1sec
15secs
-

Be42 OEM's Manual V5.0.XX - December - 2010 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, auxiliary1-2-
3-4 alarms)
[ 5" ]
2secs
90secs
-
P.34
Fail to stop alarm control (oFF = inhibited,
on = enabled)
[oFF]
-
-
[oFF]/ [on]
P.35
Emergency contact type (Input #36). 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 #33)
[ 5' ]
15secs
99mins
[oFF]
P.37
Low fuel % limit
[oFF]
1%
99%
[oFF]
P.38
High fuel % limit
[oFF]
1%
99%
[oFF]
P.39
Engine Temperature Switch type (input # 34)
[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
9999h
[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.
[ 5' ]
1 min
99 mins
[oFF]
P.44
Maintenance SERVICE 1
(for the use, see section 16.40)
[oFF]
1h
9999h
[oFF]
P.45/46
Maintenance SERVICE 2 /3
(for the use, see section 16.40)
[oFF]
1h
9999h
[oFF]
P.47
Rental Contract Setting (see section
16.40)
[oFF]
1h
9999h
[oFF]
P.48
NFPA - 110 Level 1&2
[on]
-
-
[on]/[oFF]
P.49
RS485 Node Address
[ 1 ]
1
127
-
P.50
Horn timeout (see section 8.0)
[ 5" ]
5secs
15mins
[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 ]
0h
50.000
[oFF]

Be42 OEM's Manual V5.0.XX - December - 2010 page 16
16
Table 7.06 - Programmable inputs (see options list in table 7.07)
Parameter
Options
Default
Parameter
Options
Default
[InP.1]
Option
available
[0] - - - [28]
[2]
[InP.3]
Option
available
[0] - - - [28]
[10]
Contact
type
[n.o.][n.c.]
[n.o.]
Contact type
[n.o.][n.c.]
[n.o.]
[InP.2]
Option
available
[0] - - - [28]
[13]
[InP.4]
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
Note: (+) Indicates the factory programming; (v) Indicates a valid option for the input
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 STARTpushbutton
[ 28 ]
Manual STOP pushbutton
(^)The Be42 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
[ 39 ]
[Out.3]
Output 3
[ 54 ]
see 7.09
[Out.2]
Output 2
[ 29 ]
[Out.4]
Output 4
[ 57 ]
see 7.09

Be42 OEM's Manual V5.0.XX - December - 2010 page 17
17
Table 7.09 - Output Options Table
Option & description
Option & description
[ 0 ]
Output is disabled
[32]
Alarm form Input 2: Shutdown/Warning
[ 1 ]
Under Frequency Shutdown
[33]
Alarm form Input 3: Shutdown/Warning
[ 2 ]
Over Frequency Shutdown
[34]
Alarm form Input 4: Shutdown/Warning
[ 3 ]
Over Current Shutdown
[35]
Cumulative Oil Alarms
[ 4 ]
Over Current Warning
[36]
Cumulative Temperature Alarms
[ 5 ]
Overload Warning or Shutdown (^^^)
[37]
Cumulative Alternator Alarms
[ 6 ]
Over Voltage Shutdown
[38]
Common Fuel Alarms
[ 7 ]
Under Voltage Shutdown
[39]
Horn Output (See table 7.05 [P50])
[ 8 ]
Alternator Failure Shutdown
[40]
Crank Delay (Start Warning)
[ 9 ]
Low Oil Pressure Warning
[41]
Presence of Nominal Mains Parameters
[10]
Low Oil Pressure Shutdown
[42]
Mains Failure Timing
[11]
Oil Sender Failure Warning
[43]
Mains Restore Timing
[12]
High Temperature Warning
[44]
KG Status
[13]
Temperature Switch Shutdown
[45]
KM Status
[14]
Temperature Sender Failure Warning
[46]
Pre-glow MODE 1/2/3/4
[15]
Low Battery Voltage Warning
[47]
PURGE (gas engine valve control)
[16]
High Battery Voltage Warning
[48]
RENT<48h
[17]
Low Fuel Shutdown (switch)
[49]
RENT=0h (Expired)
[18]
Fuel Low Warning (sensor)
[50]
Engine Running Status
[19]
Fuel Reserve Warning (switch)
[51]
Presence of Nominal Generator Voltage
[20]
Fuel high Warning (sensor)
[52]
BE42 in OFF MODE (Status)
[21]
Fuel Sender Failure Warning
[53]
BE42 in MANUAL MODE (Status)
[22]
Emergency Stop Shutdown (Er08)
[54]
BE42 in AUTO MODE (Status)
[23]
Stop Pushbutton Used in AUTO (Er09)
[55]
BE42 in TEST MODE (Status)
[24]
Maintenance SERVICE 1 (Er10)
[56]
BE42 in LOCK MODE (Status)
[25]
Maintenance SERVICE 2 (Er10)
[57]
Be42 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]
Indication of Parameter Error warning
-
--
[31]
Alarm form Input 1: Shutdown/Warning
-
--
(^^^) If an input is configured with option [20] or [21] (see table 7.07)
Table 7.10 - Oil Pressure Sensor Settings
Display
Parameter
Default
Range
[Pr.1]
Pressure
[ 0.0] Bar
0 up to 20 Bar
0 up to 2000
Ohm
[-r1-]
Resistance
[ 10] Ohm
[Pr.2]
Pressure
[ 2.0] Bar
[-r2-]
Resistance
[ 51] Ohm
[Pr.3]
Pressure
[ 4.0] Bar
[-r3-]
Resistance
[ 86] Ohm
[Pr.4]
Pressure
[ 6.0] Bar
[-r4-]
Resistance
[ 122] Ohm
[Pr.5]
Pressure
[ 8.0] Bar
[-r5-]
Resistance
[ 152] Ohm
[Pr.6]
Pressure
[ 10.0] Bar
[-r6-]
Resistance
[ 180] Ohm

Be42 OEM's Manual V5.0.XX - December - 2010 page 18
18
7.11 - Temperature Sensor
7.12 - Fuel Level Sensor
Display
Parameter
Default
Range
Display
Parameter
Default
Range
[°C1]
Temperature
[ 128]
0°C up to
250°C
0 Ohm up
to 2000
Ohm
[FUE1]
Fuel Level
[ 0 ]
0% up to
99%
0 Ohm
up to
2000
Ohm
[-r1-]
Resistance
[ 19 ]
[-r1-]
Resistance
[ 10]
[°C 2]
Temperature
[ 115]
[FUE2]
Fuel Level
[ 20]
[-r2-]
Resistance
[ 26]
[-r2-]
Resistance
[ 50]
[°C 3]
Temperature
[ 90]
[FUE3]
Fuel Level
[ 50]
[-r3- ]
Resistance
[ 46]
[-r3-]
Resistance
[ 100]
[°C 4]
Temperature
[80]
[FUE4]
Fuel Level
[ 80]
[-r4- ]
Resistance
[ 67]
[-r4-]
Resistance
[ 150]
[°C 5]
Temperature
[ 70]
[FUE5]
Fuel Level
[ 90]
[-r5- ]
Resistance
[ 95]
[-r5-]
Resistance
[ 200]
[°C 6]
Temperature
[ 40]
[FUE6]
Fuel Level
[ 99]
[-r6- ]
Resistance
[ 287]
[-r6-]
Resistance
[ 250]
Section 8.0 - Alarms, Warnings and Shutdowns
The Be42 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 relay and 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. Follows 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 Be42 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.

Be42 OEM's Manual V5.0.XX - December - 2010 page 19
19
Section 10.0 B42 for PUMP SETS
If you use the Be42 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 #29 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
Section 11.0 Engine Running Detect (Charger Alternator)
The B42 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 #22) is 0V. As soon as the B42 starts the engine, a voltage
appears in the D+/WL terminal (0.8 to 2.5V). When the engine starts running, the voltage of the D+/WL terminal
increases by up to 3V-6V. When the engine runs, the voltage reaches 14V (28V) needed to charge the battery.
The safest point to disconnect the starter motor is between 6V to 10V. The default parameter of [P.26] is 8.0V.
This value is recommended for engines using 12V batteries. For 24V batteries, we recommend that you set the
threshold to 16V.
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 B42 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. The insertion of switches or breakers in series to terminals #13 and #14 is not recommended.
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 #22 terminal. This protection is delayed by 15
seconds.
Section 12.0 - Calibration and Memory Reset
12.1 - Enter the calibration mode To enter the calibration mode follow the instructions.
1) -Make sure the Battery voltage is over 12.0Vdc and select the MAN mode. Start the engine if you need to
calibrate a parameter of the generator or,
2) - Push and hold the [F9→] and [ACK-F10] pushbuttons simultaneously, for about 2 seconds, until the yellow
LED [h/Prog.] starts to blink and display indicates [-CAL]; release the buttons.
3) - If the Be42 programming is password protected, the message [42.42] will appear; follow the instructions in
table 6.11. If the Be42 is not password protected, the parameter [n1.n2] will appear on the display and you can
proceed as indicated in section 12.2.

Be42 OEM's Manual V5.0.XX - December - 2010 page 20
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12.2 - Calibrating a measurement (Note: to exit the procedure push the [OFF] pushbutton at anytime)
1) -Press the [←F8] or [F9→] pushbutton to select a 'Parameter name' (see Table 12.2).
2) -Press the [ACK-F10] pushbutton to display the reading of the measurement (example 395V).
3) -Press the [TEST ↑] (or [AUTO ↓]) to adjust the reading according to an external reference (example 400V).
4) - When finished, push the [ACK-F10] again to display the 'Parameter name'. Select another 'Parameter
name' to calibrate by pushing the [←F8] or [F9→] pushbutton. When finished, you have 3 options: 5A, 5B or 5C.
5 A ) -Exit the procedure without saving by pushing the [OFF] pushbutton.
5 B ) -Restore the factory default calibration: press and hold the [←F8] and [F9→] pushbuttons simultaneously
until the display blinks twice. You are required to save the setting as indicated in step 5C).
5 C ) -Save the calibration: push and hold the [ACK] and [F9→] pushbuttons simultaneously until the [SAVE]
message appears (approximately 5 seconds); the Be42 saves the calibrations and remains in Manual mode.
Table 12-2, List of the Measurements
'Parameter'
Description
Unit
Recommended Calibration Range
[n1.n2]
Mains Voltage phase L1-L2
Volt
300 up to 400Vac
[n2.n3]
Mains Voltage phase L2-L3
Volt
300 up to 400Vac
[n1.n3]
Mains Voltage phase L1-L3
Volt
300 up to 400Vac
[FrEq]
Frequency (Mains/Generator)
Hz.
45 up to 55 Hz
[L1.L2]
Generator Voltage L1.L2
Volt
300 up to 400Vac
[Curr]
Generator Current
Amp
4 up to 5Aac (C.T. output)
[bAtt]
Battery voltage
Vdc
Voltage of the battery
[bAr] (°)
Oil Pressure
Bar
2 Bar up to 4 Bar
[°C] (°)
Engine Temperature
°C
80°C up to 100°C
[FUEL] (°)
Fuel Level
%
80% - 90%
(°)Note: in order to obtain a reading on display you are required to set a value in P29, P30 and P38
12.3 - To clear the Memory
note: you are required to stop the engine before clearing the memory
-Remove the supply. Push and hold [I-F3] & [I-F5] pushbuttons simultaneously and apply the Vdc supply.
-Push the pushbuttons according to the message that appears on display (in a sequence)
- After pushing the last pushbutton [AUTO], the message [-EPP] will appear
- Remove the supply and re-program the controller according to yur need. We recommend to program a
passsword in order to limit the access.
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 Be42. 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 be carried out by qualified personnel only.
To exit the Troubleshooting, remove the Vdc supply at anytime