Data Sheet for Product

16 / 24
Siemens Superheat Controller CE1N3372en_02
Smart Infrastrucutre 2022-02-16
Pressure sensor with DC 0…10 V signal (X1)
The following diagram shows example for the wiring of pressure sensor QBE2004
(DC 0…10 V signal) with 3-wire connection (analogue input X1).
U M
AC / DC 24 V
G0
G G0 PE
X3
X1
X2 5VX5X4
GND GND GND 24V
G
DC
X1
Active temperature sensors (X4)
The following diagrams show examples for the wiring of active temperature sen-
sors with 3-wire and 2-wire connections (analogue input X4).
Active temperature sensor with DC
0…10 V or 4…20 mA signal, 3-wire
connection
Active temperature sensor with 4…20
mA signal, 2-wire connection
M
AC / DC 24 V
G0
G G0 PE
X3X1 X2 5VX5X4
GND GND GND 24V
G
U/I
DC
X4
AC / DC 24 V
G0
G G0 PE
X3X1 X2 5VX5X4
GND GND GND 24V
G(+)
I(-)
DC
X4
Commissioning notes
To commission the controller, the following pieces of documentation are required:
• The Installation and User Manual CE1U3372XX / H 74 319 0555 0 supplied with
the controller
• The plant connection diagram and all other control documentation kept in the
control panel or by the plant operator
To configure the PolyCool RWR462.10/ALG control loops and to set the relevant
parameters, the following plant data are required:
• Type of refrigerant used (R22, R134a, etc.)
• Design data of evaporator (superheat, max. evaporation temperature, MOP)
Before applying power to the controller (AC / DC 24 V), the installation must be
checked to make certain it is wired according to the connection diagrams.
Connection diagram
Connection diagram
Required
documentation
Refrigeration data
Checking installation of
peripheral devices