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Model 9163
Digital indicator
Page 40
Serial interface / MODBUS: RS485 4-wire
Rx +
Rx -
Tx +
Tx -
Warning!
You will get an electric shock if the voltage is connected.
Disconnect the digital indicator from the power supply before opening it.
120
Ω
termination resistor can be connected by:
closing jumper S3 (Tx), closing S2 (Rx).
Line polarization via Rx can be selected by:
closing jumpers S4, S5 (S6,S7,S9 open; S8 closed)
3.1.4 Power supply
Before connecting the 9163 to the power supply:
¾
Make sure that the instrument is suitable for the given supply voltage.
The appropriate supply voltage can be found from the order code for the unit:
Order code
Correct supply voltage
9163-V0xxxx
100
to 240 V
AC/DC
9163-V1xxxx 20
to 27 V
AC/DC
¾
Provide a circuit breaker with fuse for the power supply to the electronic instruments in the
instrument panels.
¾
Always use cables with the correct voltage and current rating for the electrical connections.
You can find further information on suitable cables in section 3: "Electrical connections" on
page 21.
The current and voltage values are listed in section 13: "Technical specifications" on page 141.
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