Daikin HUBBARD HCU2040PXB1 Installation, Commissioning And Maintenance Manual page 71

ENG
3.3.1 Connecting universal NTC temperature sensors
The analogue inputs are compatible with 2-wire NTC sensors.
The inputs must be set for NTC Signals from the user terminal or using the
default value installation procedure. The connection diagram is shown
below:
J1
Hardware Version Terminals
GND, U4, U5
S
U1, U2, U3, U4, U5
GND, U4, U5
M, D
U1, U2, U3, U4, U5, U6, U7, U8, S2, S4
GND, U4, U5, U9, U10
L
U1, U2, U3, U4, U5, U6, U7, U8, U9, U10 2
Note: the two wires of the NTC sensors are equivalent, as they have
no polarity, therefore it is not necessary to follow any specifi c order
when connecting to the terminal block.
3.3.2 Connecting PT1000 temperature sensors
The pRack PR300T can be connected to 2-wire PT1000 sensors for all high
temperature applications; the operating range is: -100 to 200 °C.
The inputs must be pre-confi gured for PT1000 Signals from the user
terminal or using the default value installation procedure.
The connection diagram is shown below:
J1
Hardware Version Terminals
U4, U5, GND
S, M
U4, U5
U4, U5, U9, U10
L
U4, U5, U9, U10
Important: for correct measurement by the PT1000 sensor, each
sensor wire needs to be connected to a dedicated terminal, as
shown in Fig. 3.b.
Note: the two wires of the PT1000 sensors are equivalent, as they
have no polarity, therefore it is not necessary to follow any specifi c
order when connecting to the terminal block.
Copyright HPL March 2021
pRack PR300T +0300018EN rel. 1.5 - 02.05.2017
pR300T
J24 J2 J3
Fig. 3.a
NTC probe cable
1
2
1
2
1
pR300T
J24 J2 J3
J1
Fig. 3.b
PT1000 probe cable
1
2
1
2
3.3.3 Connecting current pressure probes
pRack PR300T can be connected to all CAREL SPK* series active pressure
probes or any other pressure sensors available on the market with 0...20
mA or 4...20 mA Signal.
The inputs must be set for 0...20 mA or 4...20 mA Signals from the user
terminal or using the default value installation procedure.
The connection diagram is shown below:
Hardware
Terminals
Version
+VDC
S, M, L, D
U1, U2, U3, B6, B7, B8, S1, S3
Tab. 3.b
Important: do not connect the green wire.
3.3.4 Connecting 0 to 5 V ratiometric pressure probes
pRack PR300T can be connected to any other pressure probes available
on the market with 0 to 5 V ratiometric sensor.
The inputs must be set for 0 to 5 V Signals from the user terminal or using
the default value installation procedure.
The connection diagram is shown below:
Hardware
Terminals
Version
+5 Vref
S, M, L, D GND
U1, U2, U3, U6, U7, U8, S1, S3
Tab. 3.c
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pR300T
J1 J24 J2 J3
Fig. 3.c
Probe wire colour
brown
white
pR300T
J1 J24 J2
Fig. 3.d
Probe wire
colour
black
green
white
P4367 Rev 01
Description
power supply
Signal
Tab. 3.d
J3
Description
power supply
power supply
reference
Signal
Tab. 3.e