Be126 NFPA20 Installation Manual V4XX - 03 Nov - 2018 page 42
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Section 40.3 - TERMINAL DESCRIPTION (4 OF 4)
40.3.1
RS232 SERIAL INTERFACE Connector JH (9 Poles)
JH-1-8-9
NOT USED
The connections are suitable for a modem connection
(ASCII protocol & AT commands).
JH-2
RX INPUT
JH-3
TX OUTPUT
JH-4
DTR OUTPUT
JH-5
GROUND
JH-6
DSR INPUT
JH-7
RTS OUTPUT
40.3.2
POWER SUPPLY CONNECTIONS Connector JI (3 poles)
JI-1
Battery 2 Plus Vdc
supply
(DC plant supply)
An internal electronic 1A thermal protection is provided. You have to connect a supply
between 8 up to 36VDC. The Be126 uses this connection to indicate battery 2 voltage
measurement.
JI-2
Common Battery minus
supply.
Must be connected straight to the battery minus. We recommend that you use a wire
with minimum size of about 2.5 sq.mm.
JI-3
Battery 1 Plus Vdc
supply
(DC plant supply)
An internal electronic 1A Thermal Protection is provided. You have to connect a supply
between 6 up to 36VDC. The Be126 uses this connection to indicate battery 1 voltage
measurement.
40.3.3
ANALOG INPUTS Connector JM (10 Poles)
JM-1
WATER PRESSURE
This input accepts a 0-10V pressure transmitter or 4-20mA pressure transmitter. The
Be126 allows you a large range of adjustments and calibration. Consult the section 19.0
to set up the pressure measurement.
JM-2
AUXILIARY
TEMPERATURE
This input monitors an auxiliary temperature transmitter. See section
[AUXILIARY °C]
submenu to set an alarm (see section 20.0). You can choose 4-20mA or 0-10V
transmitter.
JM-3
COOLANT
TEMPERATURE
This input monitors the coolant engine temperature. See section 18.0 (
[ENGINE
TEMPERATURE]
) to set or to adjust the response curve.
The allowed range for the sensor is 0-1000 OHM.
JM-4
OIL
PRESSURE
This input monitors the engine Oil Pressure. See section 17.0
(
[OIL PRESSURE]
) to set an
alarm or to adjust the sensor response curve.
Allowed range for the sensor: 0-1000 OHM.
JM-5
FUEL
LEVEL
This input monitors the Fuel Level. See section 16.0 (
[TANK FUEL LEVEL]
) to set an alarm
or to adjust the response curve.
Allowed range for the sensor: 0-1000 OHM.
JM-6
NOT CONNECTED
JM-7
Internal Pull UP
You can connect a magnetic pickup to detect the rotational speed. As an option, if pickup
is not available, you can connect the 'W' terminal of the charger alternator to JM-9. In this
case connect terminals JM-7 & JM-8 together by using a short wire. You are required to
set the number of teeth in the parameter
[PICKUP/W RATIO]
(see the
[ROTATIONAL SPEED]
menu in the section 14.0). In order to comply with NFPA 20 and UNI EN 12845 you are
required to use a magnetic pickup.
JM-8
Pickup (+)
JM-9
Pickup (-) / W
JM-10
Pickup shield
