Carel humiSonic UU02, User Manual, Page: 44 / 68

12
ENG
Direct version for room applic. +0300062IE - rel. 1.1 - 16.11.2017
Dipswitch configuration: configuration must be performed before
switching on the humidifier (default position shown in Fig. 3.f ).
2 3 6 4 7 5 1 8
ON
Fig. 3.f
1. Communication 5-6 Humidity Setpoint
OFF Serial 485 Carel/Modbus OFF/OFF 50 %rH
ON tLAN OFF/ON 30 %rH
2-3 tLAN address (if 1 is ON) ON/OFF 40 %rH
OFF/OFF - - ON/ON 60 %rH
OFF/ON address 1 7 RESERVED
ON/OFF address 2 8 Production transducer managem.
ON/ON address 3 OFF parallel
4 Serial 485 / tLAN baud rate ON in series
OFF 19200
ON 9600
Tab. 3.b
3.3 Main board connections
Depending on the type of signal used, atomized water production can
be enabled and/or managed in different ways (ON/OFF or modulating).
HUMIDISTAT OR REMOTE CONTACT (ON/OFF action)
Production is enabled by closing terminal M14.
M14 can be connected to a switch, a humidistat or a controller (voltage-
free contact, max 5 Vdc open, max 7 mA closed).
M 14
Remote
ON/OFF
+ GND
G
G0
Fig. 3.g
TH HUMIDITY PROBE (Optional)
If the TH humidity probe is connected to the G terminal atomized water
production starts ifi:
•
The terminal M14 is closed;
•
The humidity value measured by the probe is below the setpoint
(preset at 50%rH and modified via dipswitches 5-6).
485 SERIAL CONNECTION
Carel/Modbus protocol
RS 485
-
+
GND
M 11
Fig. 3.h
Important: for RS485 connections in household (IEC EN 55014-1)
and residential (IEC EN 61000-6-3) environments, use shielded cable (with
shield connected to PE both on the terminal and controller ends),
maximum length specified by the EIA RS485 protocol, equivalent to
European standard CCITT V11, using AWG26 twisted pair cable;
the input impedance of the 485 stage is 1/8 unit-load (96 kOhm). This
configuration allows a maximum of 256 devices to be connected, with
cables in separate conduits from the power cable.
ALARM RELAY
The connections can be used to directly control a light or an auxiliary
relay coil or signal when reaching the humidity set point (see table of
parameter b0 values).
M9
M10 J8
1 2 3 4 5
J17
COMMON NO
Fig. 3.i
Note : in industrial environments (IEC EN61000-6-2) the signal cables
leaving the unit must not exceed 10 m (33 ft)
(1)
in length: remote on/off
digital input (terminals M14.1...M14.2) and shielded cable for RS485
communication.
3.4 Auxiliary card connections
See chap. ”Configuration parameters” for the description of parameters
A0, A1, A2.
M9
M10 J8
1 2 3 4 5
J17
COMMON
NO
1 2
OUT
GND
21 Vdc
Fig. 3.j
The auxiliary card features the following connections
ON/OFF CONTROLLER (humidistat or remote switch)
•
jumper inputs M14.1 and M14.2 (enable) on the main board;
•
connect terminals M10.1 and M10.2 to a humidistat or a remote switch
(voltage-free contact);
•
set parameter A0=0 to enable On/Off operation.
EXTERNAL PROPORTIONAL CONTROLLER (modulating)
•
jumper inputs M14.1 and M14.2 (enable) on the main board;
•
connect terminals M10.1 and M10.2 (production request) to an
external controller;
•
set parameter A0=1 to enable modulating control and parameter A2
depending on the chosen signal (0 to 10 V, 2 to 10V, 0 to 20, 4 to 20 mA).
CONTROL WITH CAREL HUMIDITY PROBE
•
jumper inputs M14.1 and M14.2 (enable) on the main board;
•
connect the probe to terminals M10.1, M10.2. The power line M10.3
can be connected with cable of maximum length of 2 m (6,6 ft); for
greater lengths use an external power supply with the signal earth
electrically connected to the signal earth of the controller;
•
set parameter A0=2 to enable probe control and parameter A2
depending on the chosen signal (0 to 10 V, 2 to 10V, 0 to 20, 4 to 20 mA).
If non-CAREL probes are used, check:
•
voltage signal: 0 to 10 Vdc, 2 to 10 Vdc, terminal M10.1 (GND: M10.2);
•
current signal: 4 to 20, 0 to 20 mA, terminal M10.1 (GND: M10.2).
Final checks
The following conditions represent correct electrical connection:
□
mains power to the humidifier corresponds to the voltage shown on
the rating plate;
□
a mains disconnect switch has been installed so as to be able to
disconnect power to the humidifier;
□
terminals M14.1, M14.2 are jumpered or connected to a contact to
enable operation;
□
if the humidifier is controlled by an external controller (with auxiliary
card), the signal earth is electrically connected to the controller earth.