Water Comfort System · Operating Manual Electronic Temperature Control Unit ELTC-W
Page 4 of 10
Firmware V0.5.0
Revision 3
BU-091 - 008TCWE
Technical Data
General Connection and Safety Instructions
Operating voltage range Input A ....................................100...253VAC, 50Hz
Operating voltage range Input B ...............................................24VDC, ± 5%
Max. power input .....................................<= 6,5VA (@ 253VAC, worst case)
Standby power input................................................... <= 3,5VA (@ 230VAC)
Operating temperature range........................................................-10...+40°C
Storage temperature range...........................................................-20...+65°C
Admissible humidity............................................... 80% RH, non-condensing
Relay outputs
Heating tape maximum current ......................20A (res., max. 250VAC)
Heating Tape while Softstart .................................................... max. 50A
Frost protection-Output maximum current .....16A (res., max. 250VAC)
Alarm-Output maximum current .......................2A (res., max. 250VAC)
requiered minimum current .....................................10mA / 5VDC
Fuse protection .....................................internal 2A, non-changeable cut-out
Advice
This manual has to be accessible to users at any time. We
cannot accept liability for damages caused by unintended
usage or by non-observance of the manual and the safety
instructions! In these cases all warranty claims are void.
This manual contains additional safety instructions within the
product description. Please observe!
If you detect damage, the product should NOT be connected
to voltage!
Current control…………………………………………………….limit 0,2 A
“error” corresponds 6 m heating cable in nominal rating
Inputs ........................................................2x NTC-Temperature sensors
Measuring-/Display range ................................................... max. -20...+60°C
Resolution .................................................................................................0,1K
Accuracy .................................................................................. ±1K, ±1 Digit
Display ..........................................................................LCD, 128x32 Pixel
Adjustment range ............................................................. see parameter lists
Interface
.......................... RS 485, half duplex, 8N1, max 38,4 kBaud
Communication protocol ....................................................................... E-Link
Data preservation ..............................................................................unlimited
Clock
.........................................Quartz, automatic daylight saving time.
Runtime without line voltage ....................................................... typ. 10 days
Housing ................................................................... Plastic with foil buttons
for standard busbar 35mm, IP 20
Danger
It presents a danger to life!
A safe operation might not be possible if:
• the device has visible damage,
• the device does not work,
• after longer storage in inappropriate conditions.
• contamination or humidity.
• after hard transport stress.
•
Installation and operation of the device must be
carried out by a certified electrician or under
observation by a certified electrician.
• Keep the device safely disconnected from voltage
while mounting. Danger of electric shock!
• Never operate the device without housing.
Danger of electric shock!
• An existing PE-terminal of the device must be put on
PE! Danger of electric shock!
Additionally
the internal filtering of errors would only function
partly, so deficient displays can be the result.
• The device must only be used for the purpose
described in this document.
• Please observe the required safety regulations and
standards in the place of installation.
• Before usage of the controller please check its operating
conditions (see technical data), e.g.:
Caution
Advice
- Power supply (printed on the device)
- Required ambient conditions
(temperature or humidity limits)
- Maximum stress to the relay contacts in relation with
the maximum starting currents of the users (e.g.
engines, heaters).
In case of non-observance malfunctions or damages
are possible.
• Observe when extending sensor cables: The cross
section is uncritical but should be 0,5mm² minimum.
Thinner cables can cause error displays.
• Avoid installation directly next to big contactors (strong
interferences are possible).
• Please observe the necessary requirements when
installing data lines.
Cleaning
Do not use acid or acidic means to clean the front
foil. Danger of damage!
We declare that the described product is in full compliance with
the directives 2006/95/EC, 2004/108/EC and 2011/65/EU. If you
RoHS
need a detailed declaration of conformity, please contact us.
