Critical Environment Technologies AST-IS5 Manual de usuario descargar pdf (Pagina 15)

Connection

Terminal

Function

Electrical Data

Remarks

G+

Power (+)

Power ground (-)

24 VAC/DC+ (+-20%), 3W

24 VAC/DC-

2W without output load

See note 1!

OUT 1

OUT 2

Analogue Output 1

(+)

Analogue Output 2

(+)

Signal Ground (-)

0-10 VDC or 0-20 mA,

2-10 VDC or 4-20 mA,

Same as Output 1

Connected to G0 via PTC

fuse

According to positions of

OUT1 and start point

jumpers.

See note 2!

According to positions of

OUT2 and start point

jumpers.

See note 2!

See note 1!

WIRING TERMINALS & SIGNAL OUTPUT JUMPER SETTINGS, CONT’D….

The power supply has to be connected to G+ and G0. G0 is considered as system

ground. If the analogue output is connected to a controller the same ground reference

has to be used for the AST-IS5 unit and for the control system! Unless different

transformers are used, special precautions need to be taken.

PLEASE NOTE! The AST-IS5 signal ground is not galvanically separated from the AST

-IS6 power supply!

PLEASE NOTE!

The same ground reference has to be used for the AST-IS5 unit and for the control

system!

Note 1: The ground terminal is used as negative power supply DC input or AC phase

ground G0 (halfwave rectifier). The signal ground M, is protected by a PTC resistor, is

the same as power ground G0 (permitting a ”3-wire” configuration). A single transformer

may be used for the entire system.

Note 2: AST-IS5 can deliver a voltage or a current loop for OUT1/OUT2. To change

between voltage and current output mode the hardware jumpers are used. There is one

jumper for OUT1 and one for OUT2, so that one output can be a voltage output and the

other a current output. Both, voltage output and current output, can have start points 0

% (0-10 VDC or 0-20mA) or 20% (2-10 VDC or 4-20mA). The same start point is used

for both outputs. See the function manual.

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Critical Environment Technologies AST-IS5 Manual de usuario Pagina 15

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