Resol STA-W User manual

STA-W
www.resol.com
RESOL STA-W
Mounting
Connection
Function
Manual
48004660 48004660
EN
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit.
Please keep this manual carefully.

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Table of contents
Safety advice..............................................................2
Overview....................................................................3
Technical data............................................................3
1. Mounting........................................................4
2. Connection....................................................4
3. VBus®-LED.....................................................5
4. Function.........................................................5
Imprint .......................................................................8
Safety advice
Please pay attention to the following safety advice in order
to avoid danger and damage to people and property.
Instructions
Attention must be paid to the valid local standards, regu-
lations and directives!
These instructions are exclusively addressed to authorised
skilled personnel.
•Only qualified electricians should carry out electrical
works.
•Initial installation must be effected by qualified
personnel named by the manufacturer
Subject to technical change. Errors excepted.
This manual contains important information about safe and
proper usage of this product. Please keep this manual for
future reference.
Description of symbols
Disposal
WARNING!
Warnings are indicated with a
warning triangle!
Signal words describe the danger that may occur, when it
is not avoided.
Attention means that damage to the appliance can occur.
•Dispose of the packaging in an environmentally sound
manner.
•Dispose of old appliances in an environmentally sound
manner. Upon request we will take back your old
appliances bought from us and guarantee an environ-
mentally sound disposal of the devices.
Information about the product
Proper usage
The STA-W may only be used as an interface between RESOL
controllers and devices with VBus®output and external appli-
ances in compliance with the technical data specified in this
manual.
Improper use excludes all liability claims.
CE-Declaration of conformity
The product complies with the relevant
directives and is therefore labelled with the
CE mark. The Declaration of Conformity
is available upon request, please contact
RESOL.
Note
Notes are indicated with an information symbol.
«Arrows indicate instruction steps that should be
carried out.

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STA-W
The STA-W is an interface that transmits heat quantity measurement values bet-
ween RESOL devices and external appliances. It is to be connected to a RESOL
controller or calorimeter via the RESOL VBus®. Whenever the new kWh value
exceeds the previous by 1 kWh, the STA-W operates a potential-free contact
which can e.g. be connected to a building management system (BMS).The number
of accumulated contacts can thus be visualised as a heat quantity in the BMS
software.
Overview
The STA-W recognises the VBus®-protocols of the following devices:
130
45
Included
1 × STA-W
1 × accessory bag
2 × screw
2 × wall plug
1 × terminal block
Technical data
Housing: plastic, PC-ABS
Protection type: IP 20,
with insulation IP 22 (DIN 40050)
Ambient temperature: 0 ... 40 °C
Dimensions: Ø 130 mm, depth 45 mm
Mounting: wall mounting
Display: 1 LED
Supply: via RESOL VBus®
Interface: RESOL VBus®
Output: 1 potential-free relay
(max. 24 V DC, 1 A, 15 W)
Max. frequency: 5 Hz
current as of 11/2014
•DeltaSol®AL
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•WMZ

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1. Mounting
3
1
2
Housing cover
Cover
Base
ATTENTION:
Electrostatic discharge can cause damage
of electronic components.
The unit must only be located in dry interior locations. It
is not suitable for installation in hazardous locations and
should not be placed close to any electromagnetic fields.
«Choose a location, drill two holes (Ø 6 mm) parallel
next to each other (112 mm distance) and fasten the
enclosed wall plugs.
«Attach the adapter to the wall with the enclosed screws
through the mounting holes (3).
Opening the housing is not necessary for mounting, con-
nection and operation of the STA-W. The cables necessary
for the normal operation of the STA-W are pre-connected.
Should the access to the terminals become necessary, the
housing can be opened as follows:
«Unscrew the cross-head screws on the housing cover (1)
and remove them along with the housing cover.
«Unscrew the cross-head screw on the cover (2) and
remove it along with the cover.
The STA-W is designed for simple connection to RESOL
controllers or calorimeters via the RESOL VBus®. A mains
connection is not necessary.
The STA-W comes with two pre-connected cables, the
VBus®-cable (labelled “VBus®”) and the cable for the con-
nection to the building management system (labelled “relay“).
The cable carries low voltage and must not run together
in a cable conduit with cables carrying a higher voltage than
50V (please pay attention to the valid local regulations!).The
bus cable can be extended with a two-wire cable (bell wire).
The cross section of the cable must be at least 0,5 mm2
and the cable can be extended up to 50 m in the case of a
single connection.
Terminals of the STA-W Note
For mounting, connection or normal operation
of the STA-W, neither opening the housing nor
accessing the terminals is necessary.
2. Connection

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The following status are signalled via the VBus® -LED
• off: no VBus®-connection
• red flashing: error:
STA-W does not recognise the de-
vice connected or the heat quantity
measurement option of the controller
has not been activated.
• red/green flashing: initialisation phase:
the device connected has been recog-
nised and the VBus®data packets are
processable. The potential-free contact
has not yet been operated.
• green: normal operation:
VBus®data packets are processable,
the potential-free contact is being
operated.
3. VBus®-LED
The STA-W is an interface that transmits heat quantity
measurement values between RESOL devices and external
appliances. It is to be connected to a RESOL controller or
calorimeter via the RESOLVBus®.The STA-W receives and
processes the VBus®data packets of the device connected
and calculates the difference in heat quantity measurement
values.
Whenever the new kWh value exceeds the previous by
1 kWh, the STA-W operates a potential-free contact which
can e.g. be connected to a building management system
(BMS). For example: if the new value exceeds the previous
by 5 kWh, the STA-W will operate the contact five times.
The number of accumulated contacts can thus be visualised
as a heat quantity value in the BMS software.
4. Function
A maximum of five contacts per second is possible.
If the STA-W does not receive a processable VBus®data
packet for a period of one minute, the next incoming heat
quantity measurement value will be set as a base value for
the next difference calculation. The potential-free contact
will be operated as soon as the new base value is exceeded
by at least 1 kWh in a following data packet.
The increase in heat quantity during the malfunction will not
be recorded and must, if necessary, be manually corrected
in the BMS.
An increase of more than 50 kWh between twoVBus®data
packets cannot be processed.In such a case, the STA-W will
set the new heat quantity measurement value as a base value
for the next difference calculation, but will not operate the
potential-free contact.

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Distributed by:
Please note:
The design and the specifications may be changed without notice.
The illustrations may differ from the original product.
RESOL - Elektronische Regelungen GmbH
Heiskampstraße 10
45527 Hattingen / Germany
Tel.: [phone] / 96 48 - 0
Fax: [phone] / 96 48 - 755
www.resol.de
[e-mail]
Reprinting / copying
This mounting- and operation manual including all parts is
copyrighted. Another use outside the copyright requires
the approval of RESOL - Elektronische Regelungen GmbH.
This especially applies for copies, translations, microfilms
and the storage into electronic systems.
Editor: RESOL - Elektronische Regelungen GmbH
Important notice:
We took a lot of care with the texts and drawings of this
manual and to the best of our knowledge and consent.
As faults can never be excluded, please note: Your own
calculations and plans, under consideration of the current
standards and national regulations should only be basis for
your projects.We do not offer a guarantee for the comple-
teness of the drawings and texts of this manual - they only
represent some examples. They can only be used at your
own risk. No liability is assumed for incorrect, incomplete
or false information and / or the resulting damages.