User's Manual

How to install the product SYS-04240-23 User Manual 1-3
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11.3.3 Power supply and Ignition Key input specifications
The SYS-04240-23 provides the Power connector on the rear panel.
The Power connector also includes the signal for the Ignition Key input.
The Ignition Key input is developed to be connected to the vehicle ignition key to turn ON/OFF the
product according to the following table:
Power supply
Nominal voltage: 24 VDC
Voltage range: 16.8 to 36 VDC
The product is protected against reverse voltage, surge and over-voltage
Ignition Key input (IGN)
Voltage level = VIN+ → Key ON → The SYS-04240-23 turns ON
Voltage level = 0V → Key OFF → The SYS-04240-23 turns OFF
after a programmable timeout
Note:
If you do not use the vehicle ignition key to manage the Ignition Key input, connect the IGN
signal to VIN+
Power Consumption
15W maximum
11.3.4 How to supply power and turn ON the SYS-04240-23
To supply power and turn ON the SYS-04240-23, complete the following steps:
1. Set up a DC power source that meets the SYS-04240-23 power requirements (check the input
voltage as close as possible to the Power IN connector. This is to compensate for any cable losses,
caused by cable length and other cable characteristics)
2. Verify that the DC power source is turned OFF
3. Verify that all the required peripheral devices and the network cable are connected
4. Verify that the earth terminal is connected to an earth electrode
5. Connect the Power connector according to the following table
Pin#
Signal
Description
1
VIN+
Positive power input
2
VIN+
Positive power input
3
VIN-
Negative power input
4
VIN-
Negative power input
5
IGN
Ignition Key input
6. Verify that the installation is made following all the required operating and safety instructions
7. Turn the DC power source ON and turn the Key ON. The SYS-04240-23 will turn ON (the Power
ON LED will light up)
11.3.5 How to turn OFF the SYS-04240-23
The turning OFF procedure is managed via software. For more information see How to turn ON/OFF
the modem on page 38.