TU 7052
Installation and electrical connection
- 6 -
© SIKA
•
Ba TU7052_en
•
08/2009 (03/2019)
4.2.1.2 Inductive sensor
CAUTION! Material damage!
A pull-up (pull-down) resistor should not be used if inductive sensors
are connected.
Remove any existing pull-up (pull-down) resistors.
•
The inductive sensor is connected to TU 7052 at terminals 31 and 33.
4.2.2 Output wiring
The NPN/PNP output and the optocoupler output can be used simultaneously.
4.2.2.1 NPN/PNP output
The NPN and PNP output of TU 7052
each have an internal 5kΩ pull
-up /
pull-down resistor. This ensures that both signals can be used simultane-
ously.
•
The NPN signal and PNP signal are collected via terminal 12 and termi-
nal 11 respectively.
4.2.2.2 Optocoupler output
The optocoupler of TU 7052 has a direct open-collector output which can be connected as either a
NPN or PNP output.
CAUTION! Material damage!
The optocoupler output is not equipped with a protective circuit. The
load should not exceed max. 30 V
DC
and 10 mA.
NPN wiring:
•
Connect an external pull-up resistor between terminals 32 and 23.
The NPN signal can be collected at terminal 32.
PNP wiring:
•
Connect an external pull-down resistor between terminals 13 and 22.
The PNP signal can be collected at terminal 13.
4.2.3 Supply voltage connection
The TU 7052 can be powered with a supply voltage of between 12…24 V
DC
.
•
Connect the supply voltage to terminals 23 (+U) and 22 (0 V) of
TU 7052.
VTI SENSOR:
When using a VTI flow sensor, the power supply should not fall below 12 V.
