
14
Operating instructions CellaTemp PX 4x 5x 6x
8 Electrical connection
ATTENTION
• The pyrometer may only be installed by a skilled, qualified electrician� Do not
connect the instrument while the voltage supply source is turned on� Please
observe international safety regulations at all times�
• The pyrometer is supplied with low voltage 24V DC� The power supply unit
must conform to directive EN50178, SELV, PELV�
►
Switch to neutral and verify absence of voltage
► Connect the instrument according to the following schematic:
2
3
1
4
5
1
4
L+
L-
24 V DC
5
C/Q
2
0/4 - 20 mA
Out 2
3
shielded
Pin 1
BN (brown)
L+ (Power supply 24V DC)
Pin 4
BK (black)
Open Collector switching output; Imax = 150 mA or
IO-Link OUT 1
Pin 5
GY (grey)
Open Collector switching output; Imax = 150 mA
OUT 2
Pin 2 WH (white)
Analogue output; 0/4 - 20mA
Pin 3
BU (blue)
L- (GND)
The pyrometer must be protected against high voltage and strong electro-
magnetic fields� Use a shielded cable, connecting it via connector casing
to the device housing�
Use a flyback diode when switching inductive loads�