10
GB
easy/easy compact +030220791 - rel. 2.0 - 30.05.2007
suffi
ciently tight.
The connections of the inputs and outputs, depending on the models,
may be made:
using traditional screw terminals;
using plug-in terminals with screw cable connection blocks;
using plug-in terminals with crimped cable connection blocks.
using plug-in terminals, which signifi cantly simplify the connection
of the instrument both during installation and maintenance. This also
avoids connection errors, as there are three connection blocks with a
diff erent number of pins.
Connect the inputs and the outputs following the diagram shown on the
instrument label.
For the 12 Vac versions:
if the power supply available is mains, a safety transformer is required
to ensure double insulation between the power supply and the very
low voltage electronics. If required, a fuse must be installed in series
with the primary (32 mAT for code TRA12VDE00). The transformer-
instrument connection must be as short as possible;
if the power supply available is already low voltage, but not 12 Vac,
a suitable adapting transformer must be used: double insulation
between the primary and secondary and defi nition for surge on the
primary to the appropriate level (2000 V for applications in industrial
environments.
The voltage supplied to these terminals (see the wiring diagrams) must
correspond, within the specifi ed tolerances, to the value shown on
the instrument connection label. The insulation of the instrument, for
versions with mains power supply (230 Vac and 115 Vac), is reinforced.
The versions with 12 Vac/Vdc power supply, on the other hand, do not
feature such insulation.
easy wiring diagrams
PJEZ(S, X)*
PJEZ(C, Y)*
1 2 3 4 5
6 7
9 10 11
8
L
N
L
N
DEF
. T
.
DI / PR
OBE
AMB.
T
.
NTC/PTC
PROBES
or
SERIAL
CONV
PROG.
KEY
-10T50
1 2 3 4 5
6 7
9 10 11
8
L
N
L
N
230Vac or
115 Vac or
12 Vac/Vdc
230Vac or
115 Vac or
12 Vac/Vdc
DEF
. T
.
DI / PR
OBE
AMB.
T
.
NTC/PTC
PROBES
or
or
SERIAL
CONV
PROG.
KEY
-10T50
AUX
or
AUX
PJEZ(M)*
1 2 3 4 5
6 7
9 10 11
8
L
N
L
N
230Vac or
115 Vac or
12 Vac/Vdc
DEF
. T
.
DI / PR
OBE
AMB.
T
.
NTC/PTC
PROBES
or
SERIAL
CONV
PROG.
KEY
-10T50
AUX
Fig. 2.d
•
•
•
•
•
•
easy compact wiring diagrams
1
2
3
4
5
6
L
N
NTC PROBES
SERIAL
CONV
PROG.
KEY
PJEZS***0**
PJEZS***1**
1
2
3
4
5
NTC PROBES
PJEZS***E**
1
2
3
4
5
L
N
12V~
NTC PROBES
SERIAL
CONV
PROG.
KEY
PJEZM*N*0**
PJEZM*N*1**
1
2
3
4
L
N
12V~
NTC PROBES
PJEZM*N*E**
1
2
3
4
5
6
NTC PROBES
SERIAL
CONV
PROG.
KEY
PJEZM*P*0**
PJEZM*P*1**
3
4
NTC PROBES
AUX
1
2
3
PJEZM*P*E**
L
N
L
N
AUX
L
N
Fig. 2.e
2.3 Wiring diagram for multiple units
Warnings:
the RS485 converter (IROPZ485S0) is sensitive to electrostatic
discharges, and therefore must be handled with extreme care;
check the technical documents on the CAREL IROPZ485S0 option for
the description of the connection methods so as to avoid damaging
the instrument;
suitably fasten the converter so as to avoid disconnections;
perform the wiring with the power supply disconnected;
keep the IROPZ485S0 serial option cables separate from the original
wires (relay outputs and power supply).
The RS485 converter (IROPZ485S0) is used to connect the easy and easy
compact instruments to the supervisor network, allowing complete
control and monitoring of the easy units connected.
The system allows up to 207 units to be connected together, with a
maximum length of 1000 m. For the connection, the standard accessories
are required (RS485-USB converter CAREL code CVSTDUMOR0) and two
120 Ω, terminal resistors, to be fi tted on the terminal block on the fi rst and
last instrument connected.
Connect the RS485 converter to the easy or easy compact unit using
a 4-wire cable and make the connections as shown in the fi gure. The
line should be started and ended with a 120 Ω 1/4 W resistor. For the
allocation of the serial address see parameter H0. The recommended
connection cable is a twisted pair with shield and cross-section from 0.5
to 1.5 mm
2
(AW6 22-24).
easy
easy
max. 207
units
easy
. . .
RS485
RS485
+
+
GND
GND
USB
-
-
+
GND
-
+
GND
120 ohm
-
120 ohm
IROPZ485S0
IROPZ485S0
CVSTDUMOR0
IROPZ485S0
Fig. 2.f
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•
•
•
•
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