Carel easy User Manual

13
ENG
easy/easy compact/easy split +030220791 - rel. 3.2 - 13.07.2010
2.3 Wiring diagram for multiple units
The RS485 converter (IROPZ485S0) is used to connect the easy, easy
compact and easy split 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. The connection requires the standard
accessories (RS485-USB converter, CAREL code CVSTDUMOR0) and two
120  terminal resistors.
Connect the RS485 converter to the easy, easy compact or easy split
using a four-wire cable and make the connections as shown in the  gure.
The line should be started and ended with a 120  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.h
easy split:
The serial connection for the easy split models with 4 relays depends on
the setting of parameter H7, as the management of the fourth relay (RL4)
and serial communication are mutually exclusive.
The factory setting is H7=1, which means the fourth relay is enabled. To
enable connection to the supervisor network:
1. power down the controller;
2. disconnect the 4-wire cable from the rear of the display;
3. connect the display to converter code IROPZ485S0 and this to the
RS485 network;
4. power up the controller and set H7=0 and the network address for
parameter H0.
To restore the fourth relay output (RL4):
1. power down the controller;
2. disconnect converter code IROPZ485S0 from the rear of the display;
3. connect the 4-wire cable from the power board to the display;
4. power up the controller and set H7=1.
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 power
wires (relay outputs and power supply).

Carel easy Specifications

General

Brand	Carel
Model	easy
Category	Thermostat
Language	English