Keller CellaTemp PK 11, Quick Start Manual, Page: 8 / 36

EN
• The pyrometer should be installed at 90 ° to the measurement object, if possible. The angle
should not be less than 45 ° from the vertical.
• The spot must be completely filled by the measured object.
Electrical connection
The pyrometer is supplied with low voltage 24V DC (18 ... 32V DC).
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.
► Switch to neutral and verify absence of voltage
► Connect the instrument according to the following schematic:
1
5
Test
L+
L-
C/Q
24 V DC
4
2
0/4 - 20 mA
3
shielded
2
3
1
4
5
Pin 1 BN (brown) L+ (Power supply 24V DC)
Pin 5 GY (grey) Test Input
Pin 2 WH (white) Analogue output; 0/4 ... 20mA
Pin 4 BK (black) Open Collector switching output; I
max
= 150 mA or IO-Link
Pin 3 BU (blue) L- (Shield)
The pyrometer must be protected against high voltage and strong electromagnetic fields.
Use a shielded cable. The shield must be connected with the connector housing.
Use a flyback diode when switching inductive loads.
If the test function is not used:
► Connect the test input (pin 5) to the negative supply.
► Alternatively, use 4-pole cable socket with pin 5 not assigned.
Quick Start Guide CellaTemp PK / PKF / PKL xx