Electrical Installation; Pin Assignment At The Pyrometer - impac IN 5 Betriebsanleitung

5

Electrical installation

The pyrometers are powered by 24 V DC nominal (possible range: 10 ... 30 V). When connecting the device
to the power supply ensure correct polarity. The power consumption (in this case 4 - 20 mA) is also the
measuring signal. The instrument don't need any time for starting or preheating and is immediately ready for
operation.
To switch off the instrument, interrupt the power supply or unplug the electrical connector.
To meet the electromagnetic requirements (EMV), a shielded connecting cable must be used. The shield of
the connecting cable has to be connected only on the pyrometer's side. On side of the power supply (switch
board) the shield must be open to avoid ground loops.
IMPAC offers connecting cables, they are not part of standard scope of delivery (see section 13, Reference
numbers).
Example for wiring using a digital display with integrated power supply:
Example for wiring using an external power supply:
Additional analyzing instruments, e.g. controllers, recorders, etc
Note:
can be connected in series as shown in drawing above.
5.1

Pin assignment at the pyrometer

Pin Cable color
Pin 1 (white)
Pin 2 (brown)
Pin 3 (black)
white
brown
Shield (black)
white
brown
Shield (black)
Connection
+24 V DC (10 ... 30 V)
0 V
Shield
INFRATHERM pyrometers IN 5 · IN 5/5
°C
4 ... 20 mA
230 V
24 V DC
°C
4 ... 20 mA
2
1 3
~
230 V
Digital display
with built-in
2-wire supply
Controller
Recorder
~
Power supply
Digital display
Controller
Recorder
Instrument's plug:
3 pin flange connector.
19