Connecting Universal Ntc Temperature Sensors; Connecting Pt1000 Temperature Sensors; Connecting Current Pressure Probes - Carel PRK300L3FK User Manual

Max. number of connectable analogue inputs
The maximum number of analogue inputs that can be connected to the
universal inputs/outputs depends on the type used.
Max. number of inputs connectable to
universal inputs/outputs
pCO5+
Type of signal
Small
- NTC/PTC/PT500/PT1000
5
probes
- PT100 probes 2
- 0 to 1 Vdc/0 to 10 Vdc
signals from controller- 5
powered probes
- 0 to 1 Vdc/0 to 10 Vdc
signals from externally 5
powered probes
- 0 to 20 mA/4 to 20 mA
inputs from controller- 4
powered probes
- 0 to 20 mA/4 to 20 mA
inputs from externally 4
powered probes
- 0 to 5 V signals from
controller-powered 5
ratiometric probes
Note: The table shows the maximum number of inputs that can be
connected. For example, a Small controller can be connected to a maximum
of fi ve 0 to 1 Vdc inputs from controller-powered probes and a maximum of
fi ve 0 to 1 Vdc inputs from externally powered probes. In any case, the
maximum number of inputs of both kinds that can be connected is 5.
3.3.1

Connecting universal NTC temperature sensors

For information on the maximum number of probes that can be
connected see the table at the beginning of this paragraph.
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 J24
Fig. 3.a
Hardware Version Terminals
S, M, D, L GND
U1...U10, S2, S4
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.
Medium/ Built-in
Large
driver/ Extralarge
8 10
4 (2 on U1...U5,
3 (2 on U1...U5,
1 on U6...U8,
1 on U6...U8)
1 on U9...U10)
6 6
8 10
6:
6:
(max 4 su U1...U5,
(max 4 on U1...U5,
3 on U6...U8,
3 on U6...U8)
2 on U9...U10)
9:
7:
(max 4 on U1...U5,
(max 4 on U1...U5,
3 on U6...U8,
3 on U6...U8)
2 on U9...U10)
6 6
Tab. 3.a
pR300
J2 J3
NTC probe cable
1
2
Tab. 3.b
3.3.2

Connecting PT1000 temperature sensors

For information on the maximum number of probes that can be
connected see the table at the beginning of this paragraph.
The pRack pR300 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
S, M, D, L GND
U1...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.
3.3.3

Connecting current pressure probes

For information on the maximum number of probes that can be
connected see the table at the beginning of this paragraph pRack pR300
can be connected to all CAREL SPK* series active pressure probes or any
other pressure sensors available on the market with 0 to 20 mA or 4 to 20
mA Signal. The inputs must be set for 0 to 20 mA or 4 to 20 mA signals
from the user terminal or using the default value installation procedure.
The connection diagram is shown below:
J1
Hardware Terminals
Version
S, M, D, L +VDC
U1...U10, S1, S3
Important: do not connect the green wire.
23
pR300
J24 J2 J3
Fig. 3.b
PT1000 probe cable
1
2
pR300
J24 J2 J3
Fig. 3.c
Probe wire colour Description
brown Power supply
white Signal
pRack +0300025EN rel. 1.3 - 17.12.2015
ENG
Tab. 3.c
Tab. 3.d