Beijer-electronics QTERM®-A12 Bedienungsanleitung PDF herunterladen (Seite 17)

Hardware Description and Architecture Power Supply

QTERM-A12 Terminal 11

4.7 Power Supply

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 terminal includes circuitry to protect against normal varia-

tions such as transients and spikes (EN55024 compliant), as well as reverse voltage and over-

voltage protection.

Power is applied through a 3-terminal strip with removable plug located on the back of the

unit. The 3-terminal strip has a power connection, ground and chassis ground (isolated from

the system). Alternatively, power may be applied through pin 9 of the COM1 DB9. In this

case, pin 5 is the power ground return.

If equipped with optional Power-over-Ethernet (PoE) the QTERM-A12 will operate from

power supplied over an Ethernet cable. For details about the PoE interface, refer to section 3.4,

“Optional Power-over-Ethernet Interface”.

4.8 Housing

The QTERM-A12 housing is made of industrial grade polymer that is designed to withstand

everyday use in industrial environments.

Refer to Chapter 5, “Installation” for instructions on installing the unit in a panel.

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.

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Beijer-electronics QTERM®-A12 Bedienungsanleitung Seite 17