Beijer-electronics QTERM®-A12 Uživatelský manuál stáhnout pdf (Strana 11)

QTERM-A12 Terminal 5

CHAPTER 3

APPLYING POWER

Power is supplied to the QTERM-A12 terminal via the COM1 serial port connector or the

3-pin power terminal strip for input power, return and chassis ground. The QTERM-A12 may

also be equipped with an optional Power-over-Ethernet (PoE) interface. When powered by the

3-pin power terminal strip or the COM1 serial port, the QTERM-A12 has a 10- to 32-volt DC

input range and can be powered directly from a 12- or 24-volt DC power supply (the current

will vary depending on the input voltage; see table below).

3.1 Connecting to Earth Ground

NOTE

☞

The chassis ground connection of the QTERM-A12 is electrically connected to the exposed

conductive parts of the QTERM-A12 for safety purposes. The chassis ground connection

MUST be connected to an external protective earthing system.

The QTERM-A12 has a chassis ground terminal and a chassis ground connection on the 3-pin

power terminal strip on the back of the terminal. (See Figure 6 on page 24 and Figure 15 on

page 29 for the location of the chassis ground terminal and the 3-pin power terminal strip.) The

terminal should be connected to earth ground (protective earth). The chassis ground is not con-

nected to signal common of the terminal. Maintaining isolation between earth ground and

signal common is not required to operate the terminal; however, other equipment connected to

the terminal may require isolation between signal common and earth ground. To maintain iso-

CAUTION

For Class I, Division 2 installations:

Do not connect or disconnect cables while power is applied unless the area is known to be

non-hazardous.

Power Consumption

Terminal 12 VDC 24 VDC PoE (48 VDC)

Standby

1. Standby power consumption is measured when the display has been powered down and the

operating system has entered system idle mode.

1.3 W 1.6 W 3.0 W

Typical

2. Typical power consumption is measured when the display is at full brightness and a polygon

drawing application is running.

8.5 W 9.1 W 10.5 W

Estimated Maximum

3. Estimated maximum power consumption is measured with serial, USB and Ethernet commu-

nications active. In addition, several applications are running including video with full volume

and two USB mass storage loads are being powered.

12.1 W 13.1 W 14.2 W

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 37 38

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Beijer-electronics QTERM®-A12 Uživatelský manuál Strana 11