User Manual

Dokument
IMA 208
Rev
1
Page
3 (4)
Electrical connections
The power supply has to be connected to and . is considered as
system ground. The same ground reference has to be used for the CF8-W-Disp-CO unit
and for any connected device! Unless different transformers are used, special
precautions need to be taken.
PLEASE NOTE! The signal ground is not galvanically separated
from the CF8-W-Disp-CO power supply!
PLEASE NOTE! The same ground reference has to be used for
the CF8-W-Disp-CO unit and for the control system!
Connection
Terminal
Function Electrical Data Remarks
Power (+)
Power ground (-)
24 VAC/DC+ (+-20%), 3W
24 VAC/DC-
2W without output load
See note 1!
Out(1)
Out(2)
5
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 via PTC fuse
According to positions of
OUT1 jumper and start
point selection.
See note 2!
According to positions of
OUT2 jumper and start
point selection.
See note 2!
See note 1!
6
7
Normally closed relay
Open at alarm
situations and power
loss
Contact free relay
minimum load 1mA/5V
rated load 0,5A/125VAC;
1A/24VDC
Triggered by register
OUT3
8
Out(4)
Analogue Output 4 (+)
or Open Collector
0-10 VDC
Max 0,5A, 55VDC / 40VAC
(half-wave rectifier protection)
According to positions of
OUT4.
See note 2 & 3!
DI1
Digital Input 1
Closed contact current 1mA
Open contact voltage max 5V
Do not apply any voltage
on this input!
Table I. Electrical terminal connections for CF8-W-Disp-CO
Note 1: The ground terminal is used as negative power supply DC input or AC phase ground
(halfwave rectifier). The signal ground M, 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: CF8-W-Disp-CO can deliver both a voltage or a current loop for Out(1)/Out(2). For Out(4) a
voltage output or an open collector output is selected with jumper Out(4). To change between voltage
and current output mode the hardware jumpers are used. There is one jumper for Out(1) and one for
Out(2), 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)
selected from PC software. See the user manual.
Note 3: Current of Open Collector is internally returned to terminal.
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