Operating notes
Pattern Description
All symbols OFF
No supply voltage to the HTC3.2
Possible causes:
−
Room controller off or faulty
−
Bus cable not correctly connected, or connection broken
−
HTC3.2 faulty
All symbols
flashing (2 Hz)
No communication with the room controller
Possible causes:
−
Wrong bus address set on HTC3.2
−
Wrong bus address set in room controller
−
Bus cable not correctly connected, or connection broken
−
Room controller in "Stop" mode
−
Faulty RS485 interface
Alarm messages
Technical data
Operating voltage
DC 9..0.15 V
Power supply (from HRC3..)
Current 20
mA
Bus interface
Bus voltage
SELV DC 12 V
Type
RS485
Transmission speed
4800 baud
Temperature signal input
Measuring range
5 … 45 °C
Measuring current
1 mA
Measuring element
NTC 10 k
Ω
Setpoint correction
Correction range
±
2 or
±
4 K
Resolution
0.5 K or 1 K
Parameter setting
Parameters set with internal software and
stored in EEPROM
Ambient conditions
Operating temperature
0...
+
50 °C
Transport temperature
-25..
+
65 °C
Humidity
<95
%
non-condensing
Air pressure during operation
Min. 700 hPa (3000 m above sea level)
Air pressure during transport
Min. 260 hPa (10 000 m above sea
level)
Industry standards
Product safety
Automatic electrical controls for household
and similar use
EN 60 730-1
Electromagnetic
compatibility
Emitted interference in accordance with
Interference immunity in accordance with
EN 61000-6-3
EN 61000-6-2
Housing
protection standard
To EN 60,529
IP20
Protection class
To IEC1140
III
conformity
Meets the requirements of:
EMC Directive
89/336/EEC
Low-voltage
directive
73/23/EEC
Environmental
compatibility
Environmental product declaration
CM2E6320en provides data on
environmentally compatible product design
and assessment (material composition,
packaging, disposal)
ISO 14001 (environment)
ISO 9001 (quality)
UL/CUL approval
UL/CUL 916
8/10
Building Technologies
HTC3.2/.. - Room operator unit
CM2N6320en
01.09.2008