Technical Specifications - Carel thT Technisches Handbuch

Pressing the button, we can select the desired function.
The logic is to change the diff erent time bands pressing the button and
the related cycle can manage 4 diff erent choices :
1. No Time Band (no icons shown)
2. Time Band (icons activated are "
time band)
3. Eco (icon activated is " " )
4. Party (icon activated is " " )
ON/OFF the thermostat
The thermostat on-off is managed by thermostat or by Modbus . The
choice is decided in parameters menu (parameter "tM").
If "tM" parameter is = 0 (thermostat control)
Press " " to turn on, press "
deactivate the relay.
If "tM" parameter is= 1 ( Modbus control) -> Coil 58
The thermostat ON/OFF is decided by Modbus (Coil 50).
The ON/OFF status is sent by Modbus (Coil 8).
Alarm
When there is one of the follow alarm, display will show the error code
on LCD will buzzer switch on (in accord with the parameter bE - Buzzer
enable). And relay output will be closed with "
LCD abbreviation Alarm
E1 Sensor short circuit alarm
E2 Sensor open circuit alarm
EE eeprom fault
HI Temperature higher than 55 °C
LO Temperature lower than 0 °C
AC Clock
Cn message on display
After power on, the fi rst 30 s once data traffi c is detected, this thermostat
will be recognized as network mode. When communication drops off
or cable is cut or disconnected and is 30s timeout in the second fi eld of
the display it will blink between "Cn" message and clock (10 seconds for
clock and 2 seconds for Cn).
1.3 Technical specifi cations
Power supply
Power consumption
Operating Conditions
Storage conditions
Index of protection
Display
Temperature value displayed
Precision of temperature
measurement
Precision of humidity measurement
Current load relay
Norm
Data stored
Type of relay
Voltage relay
RS485 Connections
RS485 serial: AWG 20 to 22, shielded cable, Lmax=500 m
Power supply: Cross-section of the wires: 0.5 mm2 to 1.5 mm2
Comunication mode
Protocol type: RTU
Data bit: 8
Stop bit: 2
Parity: None
" and the icon related to actual
" again to turn off thermostat and
" appear.
From 85 to 260 Vac, 50/60 Hz
2 VA
0 up to +45 °C
5% up to 90% rH
-10 up to +55 °C
5% up to 90% rH
IP 20
LCD (white backlight)
-10 ÷ 60 °C -> ± 0,1 K
0 up to 45 °C -> ± 0,5 K
20 to 80% rH: ±5% rH
Max 5 A (Resistive) / 2 A (Inductive)
according to EN60730 – Category II
REACH Compliant
RoHS Compliant
3 years
SPDT (N.O / N.C.)
230 Vac
BMS Baud rate
To enable this operation, enter in the Br (Baud rate) menu and confi rm
the Baud rate:
•
0= 19200 (default)
•
1= 9600
•
2= 4800
RS485 Address Set
To enable this operation, select the Id (Identify device) parameter to
confi rm the thermostat RS485 address.
It is possible connect up to 32 thermostats. The serial address defi ned in
the range 50 to 81 (Default 50).
Summary table of operating parameters
Coils List
Address Type R or R/W Variable Description
1 Coil R
2 Coil R
3 Coil R
4 Coil R
5 Coil R
6 Coil R
7 Coil R
8 Coil R
50 Coil R / W
51 Coil R / W
52 Coil R / W
53 Coil R / W
54 Coil R / W
55 Coil R / W
56 Coil R / W
57 Coil R / W
58 Coil R / W
59 Coil R / W
60 Coil R / W
Holding registers / Input registers Commands
Address Type R or
R/W
1 Register R
2 Register R
3 Register R
4 Register R
5 Register R
6 Register R
7 Register R
8 Register R
9 Register R / W
10 Register R / W
13
Data interpretation
Probe - Short circuit 0 normal; 1 fault
Probe - disconnected 0 normal; 1 fault
E² Fault 0 normal; 1 fault
High temperature 0 normal; 1 fault
alarm
Low temperature 0 normal; 1 fault
alarm
Alarm Status 0: No Alarms
1: Alarm
On/Off relè Status 0: Off
1: On
Thermostat On/Off 0: Off
Status 1: On
Thermostat on-off 0: Off
control 1: On
Relay management 0:automatic (default)
confi guration 1:manual
Relay control in 0: Disabled
manual mode 1: Active
Fan / Heating button 0: Fan
confi guration 1: Heating
Frost mode enable 0: Off
1: Enabled
Keys lock function 0: Off
enable 1: Enabled
Buzzer enable 0: Off
1: Enabled
Time band enable 0: Off
1: Enabled
Thermostat on-off 0: by thermostat
selection 1: by RS485 serial line
Mode button selection 0: by thermostat
1: by RS485 serial line
Fan / Heating - button 0: by thermostat
selection 1: by RS485 serial line
Variable Description Data interpretation
Machine code Fixed to 314
Hardware revision 1.021
Firmware release Depends on
fi rmware release
(e.g.:10 for fi rmware
1.0)
Room Temperature Temperature value
(0T60 °C)
Room Humidity
Mode Status Variable value
Fan mode 00 Low
01 Med
02 High
03 Auto
Heating mode 00 Disabled
01 20 minutes
02 40 minutes
03 60 minutes
Hour (setting) From 0 to 23
Minute (setting) From 00 to 59
"manuale thT" +0300077IE - rel. 1.3 - 11.04.2016
ENG