Duemmegi Domino DFPW2 User manual

Domino
DFPW2
DFPW2: power supply module
DFPW module generates the proper power supply required
by the modules connected to Domino bus. To ensure prop-
er operation, the input voltage of DFPW module must be
30Vac 50Hz.
DFPW performs an electronic protection with self-restor-
ing function; the protection breaks off the current at the out-
put terminals when an overload or a short circuit occurs. In
this way the traditional glass fuse is no more needed, and
all the problems caused by its replacement when an unin-
tentional short circuit occurs are thus avoided.
As additional safety, a protection fuse, connected across L
line, is however located under the cover of LN terminal
block.
A green LED (ON) and a red LED (FAIL) on the front panel
show the operating condition of the module (normal, criti-
cal, protection) as described in the following.
DFPW can supply up to 50 modules of weight 1 (*) of
Domino family. If the amount of installed modules overrides
this limit, or if the bus is very long, then more DFPW mod-
ules must be installed in different locations (if possible), in
order to distribute them along the bus and minimize the
voltage drop.
(*) Domino modules have, in large part, a current consumption
which is defined as weight 1; some special Domino modules have
a current consumption of higher weight. For example, if a module
has weight 4, then this will absorb a current equal to 4 "standard"
modules. The table in the next page resumes the modules having
weights different from 1.
DFPW housing is a standard DIN 6M module and it pro-
vides a -pole terminal block for the connection to the input
voltage ( 30Vac) and a pair of -pole terminal block (+ and
-) for the connection of Domino bus; the doubling of the +
and - bus terminals (internally parallel connected) allows, in
some cases, to simplify the wiring. On the contrary of the
majority of other Domino modules, DFPW module does
not require any address.
Protection operation
When the output current of DFPW module overrides a first
fixed threshold, the green LED on the front panel begins to
blink to inform that the module is operating in the critical
zone, even if it continues to supply the current on its output.
If the current overrides a second threshold, then the elec-
tronic protection takes place breaking off the output circuit
by means of an internal power relay; in this case the green
LED will be switched off and the red LED will be switched
on. The protection, after the first overload occurrence, will
be restored after 5 seconds, but if the current is higher than
the second threshold once more, the protection takes place
again and it will be restored after 10 seconds. If the over-
load condition persists after the second restoring too, then
the following restoring attempts will occur every 30 sec-
onds.
The following table resumes the waiting times before the
restoring as function of the amount of the consecutive pro-
tection occurrences:
Protection occurrence Restoring after
After the first occurrence 5 seconds
After the second occurrence 10 seconds
After the third occurrence 30 seconds
After the next attempts 30 seconds
The following table describes the meaning of the signals
provided by the two LEDs on the front panel:
Green LED Red LED Meaning
Fixed ON OFF OK
Blinking OFF Critical operation
OFF Fixed ON Protection occurrence
Module connection
Following figure shows the proper connections to be made
for DFPW module.
L
N
DUEMMEGI
MILANO-ITALY
DFPW2
_
Domino
PATENTED
ON FAIL
_
L N
BUS _
DUEMMEGI s.r.l. - Via Longhena, 4 - 0139 MILANO
Tel. [phone] - Fax [phone] – www.duemmegi.it
Rel.: 3.8 July 016 Page 1 of 3

Domino
DFPW2
If more than 50 input/output Domino modules have been
installed, or if the bus length causes incorrect operation of
some modules (especially output modules) due to the volt-
age drop across the bus cable, then more DFPW power
supply modules have to be installed. If the bus cable is very
long, each DFPW module must be located, according to
the system topology, in such a way to minimize the voltage
drop on the modules.
If more DFPW modules are required, connect according
to the schematic shown in Figure 1, taking attention to the
correct 30Vac phases.
Note: hen connecting more DFP 2 supply modules, it is
mandatory to meet the shown polarities for the connections L/N
and +/- between a DFP 2 module and the next one, otherwise
the system cannot operate.
In three phases electrical networks, it is not possible to supply
more DFP 2 (belonging to the same bus system) from different
phases.
Protection fuse
DFPW module features a protection fuse connected
across L line, located under the cover of LN terminal block;
this fuse may burn in case of high over voltage on the a.c.
supply or if a failure on the primary winding of the trans-
former occurs.
To replace a fault fuse, first of all check the connections
and verify that no short circuit occurred. To remove the ter-
minal cover, disconnect all power supplies and lever by a
small screwdriver inserted between the cover itself and the
housing side, pulling it out. The fuse value must be 1A
30V~ time-delay.
Current consumption of Domino modules
As said before, Domino modules have, in large part, a cur-
rent consumption which is defined as weight 1. The follow-
ing table lists the modules having a greater weight that
must be taken in account to evaluate how many DFPW
modules have to be installed in the plant.
Module Consumption weight
DF4DV 2¸10 (1)
DF8IL 3
DF8RIT 2
DFANA 2
DFAPP 20 ()
DFCC 3
DFCC2 5
DFDALI 2
DFDMX 4
DFDV 2
DFH 20 ()
DFIGLASS 3
DFLS 3
DFMETEO 4
DFRHT 2
DFTOUCH 8
DFTOUCH2 18
DFTP/I 2
DFTZ 2
DFWEB 15
DFWRX 2
(1) This weight depends on the load applied to outputs; when con-
nected to dimmable ballasts or similar device, consider a weight
(since the output current is sinked from the ballast instead to be
sourced by the Domino module).
() If it is not supplied by an aux power supply.
DUEMMEGI s.r.l. - Via Longhena, 4 - 0139 MILANO
Tel. [phone] - Fax [phone] – www.duemmegi.it
Rel.: 3.8 July 016 Page of 3
L
N
DUEMMEGI
MILANO-ITALY
DFPW2
_
Domino
PATENTED
ON FAIL
_
L N
BUS _
DUEMMEGI
MILANO-ITALY
DFPW2
_
Domino
PATENTED
ON FAIL
_
L N
Figure 1: Connection of more DFP 2 modules

Domino
DFPW2
Technical characteristics
Input power supply 30V~ ±10% 50Hz, 0VA
Nominal output voltage (bus) 5V peak, pulsed waveform,
SELV
Overload and short circuit
protection
Electronic
Output current threshold for
critical zone signaling
1.9A peak
Output current threshold for
protection occurrence
.5A peak
Allowable number of Domino
modules for each DFPW
50
Protection fuse 1A / 30V~ time-delay, included
(under the cover of LN terminal
block)
Housing Standard DIN 6M for DIN rail
Operating temperature -5 ¸ +50 °C
Storage temperature - 0 ¸ +70 °C
Protection degree IP 0
Outline dimensions
58mm
106mm
90mm
DUEMMEGI
MILANO-ITALY
DFPW2
_
Domino
PATENTED
ON FAIL
_
L N
Correct disposal of this product
(Waste Electrical & Electronic Equipment)
(Applicable in the European Union and other
European countries with separate collection sys-
tems). This marking on the product, accessories or
literature indicates that the product should not be
disposed of with other household waste at the end
of their working life. To prevent possible harm to
the environment or human health from uncontrolled waste dispos-
al, please separate these items from other types of waste and re-
cycle them responsibly to promote the sustainable reuse of materi-
al resources. Household users should contact either the retailer
where they purchased this product, or their local government of-
fice, for details of where and how they can take these items for en-
vironmentally safe recycling. This product and its electronic ac-
cessories should not be mixed with other commercial wastes for
disposal.
Installation and use restrictions
Standards and regulations
The design and the setting up of electrical systems must be per-
formed according to the relevant standards, guidelines, specifica-
tions and regulations of the relevant country. The installation, con-
figuration and programming of the devices must be carried out by
trained personnel.
The installation and the wiring of the bus line and the related de-
vices must be performed according to the recommendations of the
manufacturers (reported on the specific data sheet of the product)
and according to the applicable standards.
All the relevant safety regulations, e.g. accident prevention regula-
tions, law on technical work equipment, must also be observed.
Safety instructions
Protect the unit against moisture, dirt and any kind of damage dur-
ing transport, storage and operation. Do not operate the unit out-
side the specified technical data.
Never open the housing. If not otherwise specified, install in closed
housing (e.g. distribution cabinet). Earth the unit at the terminals
provided, if existing, for this purpose. Do not obstruct cooling of the
units. Keep out of the reach of children.
Setting up
The physical address assignment and the setting of parameters (if
any) must be performed by the specific softwares provided togeth-
er the device or by the specific programmer. For the first installa-
tion of the device proceed according to the following guidelines:
I. Check that any voltage supplying the plant has been re-
moved
II. Assign the address to module (if any)
III. Install and wire the device according to the schematic di-
agrams on the specific data sheet of the product
IV. Only then switch on the 30Vac supplying the bus power
supply and the other related circuits
Applied standards
This device complies with the essential requirements of the follow-
ing directives:
014/30/UE (EMC)
014/35/UE (Low Voltage)
011/65/UE (RoHS)
Note
Technical characteristics and this data sheet asre subject to
change without notice.
DUEMMEGI s.r.l. - Via Longhena, 4 - 0139 MILANO
Tel. [phone] - Fax [phone] – www.duemmegi.it
Rel.: 3.8 July 016 Page 3 of 3