Xylem Q 2Rils 485 Signal delivery panel EN 12845 Manuale d'uso
Pagina 27
27
4 WARNINGS
Before proceeding with installation, read this document carefully.
The electrical system and connections must be realised by qualified people possessing the technical
requirements indicated by the safety regulations governing the installation and maintenance of technical
systems in the country of installation.
As well endangering the safety of people and damaging the equipment, failure to observe the safety
regulations will invalidate all warranty clauses.
Qualified personnel are persons who - because of their education, experience, instructions and knowledge
about corresponding standards and regulations, rules for the prevention of accidents, and operating
conditions - are authorised by the person responsible for the safety of the plant to perform the required
actions and who are able to recognise potential hazards.
Make sure the electrical panel has not suffered damage during transport or storage. Check that the external
casing is intact and in perfect condition. All internal parts (components, conductors, etc.) must show no
traces of humidity, rust or dirt: if necessary, carefully clean and check the efficiency of all the components
contained in the Q-2Rils 485. If necessary, replace any parts that are not perfectly efficient.
Carefully check that all the conductors are correctly tightened in their relative terminals.
Following a long period of storage (or if some components are replaced), perform all the tests indicated by
the product regulations.
5 RESPONSIBILITY
The manufacturer declines all liability for the incorrect operation of the control unit if this is tampered with
or modified or operated in excess of its rated capabilities.
It also declines liability for any printing or transcription errors in this publication. It reserves the right to make
any modifications to its products that it considers to be necessary or useful, without, however, changing their
basic characteristics.
6 SPECIFICATIONS
Rated power input of the electric panel:
1x230 Vac, +/- 10%.
Frequency:
Input current:
Battery:
Max. battery operating time:
50/60 Hz
0.2A max, 0.8W stand-by ??
12Vdc, 2.3Ah, sealed lead-acid, 178x34x66 (mm)
12 hours
N° digital inputs:
Max. impedance of digital inputs:
Maximum length of cable for digital inputs:
Characteristics of cable for serial
communication with QAL 12845:
Maximum length of cable for serial
communication with QAL12845:
2x10 digit inputs
2 k-ohm
1Km per 0.1mm
2
.
Examples:
Cable cross-section 0.5mm
2
, max. cable length=5km.
Cable cross-section 0.75mm
2
, max. cable length=7.5km.
Cable cross-section 1mm
2
, max. cable length=10km.
Twisted pair, 600V, class 1, 15-18AWG, maximum impedance
120ohm, maximum capacity 50pF/m.
1.2Km.
Characteristics of RS 485 output:
9600 bps
Operating ambient temperature:
-10°C + 40 °C
Storage ambient temperature:
-20°C +50°C
Relative humidity:
50% at 40°C MAX (90% at 20°C ) without condensation
Max. altitude:
2500 m (s.l.m.)
Protection degree:
IP55
Dimensions (LxHxD):
292x332x182 (mm).
Weight:
Approx. 1.8kg