Carel thT User Manual

13
“manuale thT” +0300077IE - rel. 1.3 - 11.04.2016
ENG
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 “
” and the icon related to actual
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 “ ” again to turn off thermostat and
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 “
” appear.
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 From 85 to 260 Vac, 50/60 Hz
Power consumption 2 VA
Operating Conditions 0 up to +45 °C
5% up to 90% rH
Storage conditions -10 up to +55 °C
5% up to 90% rH
Index of protection IP 20
Display LCD (white backlight)
Temperature value displayed -10 ÷ 60 °C -> ± 0,1 K
Precision of temperature
measurement
0 up to 45 °C -> ± 0,5 K
Precision of humidity measurement 20 to 80% rH: ±5% rH
Current load relay Max 5 A (Resistive) / 2 A (Inductive)
Norm according to EN60730 – Category II
REACH Compliant
RoHS Compliant
Data stored 3 years
Type of relay SPDT (N.O / N.C.)
Voltage relay 230 Vac
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
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 Data interpretation
1 Coil R Probe - Short circuit 0 normal; 1 fault
2 Coil R Probe - disconnected 0 normal; 1 fault
3 Coil R E² Fault 0 normal; 1 fault
4 Coil R High temperature
alarm
0 normal; 1 fault
5 Coil R Low temperature
alarm
0 normal; 1 fault
6 Coil R Alarm Status 0: No Alarms
1: Alarm
7 Coil R On/Off relè Status 0: Off
1: On
8 Coil R Thermostat On/Off
Status
0: Off
1: On
50 Coil R / W Thermostat on-off
control
0: Off
1: On
51 Coil R / W Relay management
confi guration
0:automatic (default)
1:manual
52 Coil R / W Relay control in
manual mode
0: Disabled
1: Active
53 Coil R / W Fan / Heating button
confi guration
0: Fan
1: Heating
54 Coil R / W Frost mode enable 0: Off
1: Enabled
55 Coil R / W Keys lock function
enable
0: Off
1: Enabled
56 Coil R / W Buzzer enable 0: Off
1: Enabled
57 Coil R / W Time band enable 0: Off
1: Enabled
58 Coil R / W Thermostat on-off
selection
0: by thermostat
1: by RS485 serial line
59 Coil R / W Mode button selection 0: by thermostat
1: by RS485 serial line
60 Coil R / W Fan / Heating - button
selection
0: by thermostat
1: by RS485 serial line
Holding registers / Input registers Commands
Address Type R or
R/W
Variable Description Data interpretation
1 Register R Machine code Fixed to 314
2 Register R Hardware revision 1.021
3 Register R Firmware release Depends on
fi rmware release
(e.g.:10 for fi rmware
1.0)
4 Register R Room Temperature Temperature value
(0T60 °C)
5 Register R Room Humidity
6 Register R Mode Status Variable value
7 Register R Fan mode 00 Low
01 Med
02 High
03 Auto
8 Register R Heating mode 00 Disabled
01 20 minutes
02 40 minutes
03 60 minutes
9 Register R / W Hour (setting) From 0 to 23
10 Register R / W Minute (setting) From 00 to 59

Carel thT Specifications

General

Brand	Carel
Model	thT
Category	Thermostat
Language	English