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CHAPTER 2. HARDWARE DESCRIPTION 12

2.6.3 Serial port 2

Connector diagram

Pin Function

1 DCD

2 RXD

3 TXD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 RI

Connector pinout

Baud rate 115 - 230400

Data bits 8

Parity No parity

Stop bits 1

Flow control No ﬂow control

Serial port conﬁguration

Table 2.10: Serial port 2

Serial port 2 supports only RS-232 data mode.

2.7 Power switch and reset button

Power switch is located on back panel. It turns the unit on and oﬀ.

Reset button is located on front panel. Press shortly to reset the unit. Reset button can be used to restore

factory default settings. To restore factory default settings, reset the unit by keeping the reset button pressed

down until all the status LEDs blink. This indicates the factory presets have been applied.

2.8 Power connector

Arctic 3G has a 3-pin power connector. Pinout and voltage limits are described in table 2.11. Supplied plug type

is Phoenix Contact MC 1,5 / 3-STF-3,5 with screw fastening.

Connector

Pin Symbol Function

1 + Voltage in, positive / 11 ... 18 VDC, 400 mA

2 - Voltage in, negative

3 GND Extra ground connection

Table 2.11: Power supply connector

Arctic 3G can be also used with 2-pin power connector, pin 3 left unconnected. The unit is protected against

reversed polarity within the limits of the speciﬁed voltages.

Viola Systems default power supply for Arctic 3G can be ordered with order code 3020. Note that the power

supply is not included in standard Arctic 3G package.

2.9 DIN rail mounting

Arctic 3G has mounting holes for optional DIN rail mounting brackets. Viola Systems order code for DIN rail

mounting kit is 3003. Contact your local Viola Systems distributor for more details.

Mounting instructions:

1. Required tools and accessories are: DIN rail mounting kit (2 mounting brackets and 4 screws), screw driver

2. Use the screw driver to attach the screws to bottom panel of the Arctic 3G. DIN rail brackets can be installed

to either diagonally or horisontally depending on the wanted DIN rail installation angle.

3. Figure 2.5 shows example installation.