ENGLISH 5/8
Rear Connector (IDC10)
The figure shows the meaning of the IDC10
connector pins in case you
to provide the
wish
signals directly through it.
The module power supply is available only
from the rear connector.
R 485 GND
S
R 485 A
S
RS485 B
Power Supply AC / +
Power Supply AC / -
IDC 10
1
Use of Z-PC-DINAL2-17.5
If you use the Z-PC-DINAL2-17.5 accessory,
then the signals can be supplied via terminal
blocks.
The figure shows the meaning of the
terminals.
GNDSHLD: Shield to protect the connecting
c a b l e s f r o m i n t e r f e r e n c e s i g n a l s
(recommended).
GNDSHLD
A
B
GND
POWER
SUPPLY AC+
POWER
SUPPLY AC-
GROUND
DIP-SWITCH
NOT USED
Inputs
The module accepts, at input, temperature probes in platinum and nickel, with 2, 3 or 4 wire
connection.
For the electrical connections, we advise you to use shielded cables.
2 WIRES
This connection can be used for short distances (< 10 m) between module and
probe. Remember that this connection introduces a measurement error equal to
the resistance of the connection cables.
3 WIRES
A connection to be used for medium distances (> 10 m) between module and probe.
The instrument compensates the connection of the resistance cables. To ensure
correct compensation, the cables must have the same resistance.
4 WIRES
A connection to be used for long distances (> 10 m) between module and probe. It
offers maximum precision, in view of the fact that the instrument reads the resistance
of the sensor independently from the resistance of the cables.
Channel 1
1
2
4
3
I+
U+
I-
U-
4
3
2
Channel 2
5
6
8
7
Channel 3
9
10
12
11
Channel 4
13
14
16
15
Wires
Electrical connections
POWER SUPPLY AND RS485 COMMUNICATION PORT
Power supply and MODBUS interface are available from the bus for Seneca DIN rail
through the accessory Z-PC-DINAL1-35
from the rear IDC10 connector.
or
Detailed RS485 serial interface information can be found in the USER MANUAL
downloadable from the website
.
: www.seneca.it/products/z-4rtd2
MI00441
-3
-E
N
