urmet domus 1038/20 User manual

POWER SUPPLY UNIT AND RELAY
sec.6
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3
DIGIVOICE - Technical Manual
POWER SUPPLY UNIT WITH CIRCUIT BREAKER Ref. 1038/20
FEATURES - TECHNICAL SPECIFICATIONS
POWER SUPPLY UNIT WITH CIRCUIT BREAKER Ref. 1038/20
POWER SUPPLY UNIT WITH CIRCUIT BREAKER
Ref. 1038/20
FEATURES
Power supply unit with circuit breaker Ref. 1038/20 provides the
following features:
• Supplies power to grouped DIGIVOICE devices.
• Supplies power to voice lines for one or more calling devices
(entrance modules, guard door switchboard stations, etc.).
• Supplies power to data line.
• In the event of a data line short circuit, the circuit breaker
automatically isolates the fault and ensures that the remaining parts
of the system can continue to operate.
• Three LEDs indicate power supply unit operating status and provide
diagnostic error signals.
DESCRIPTION OF TERMINALS
Mains terminals
0 Mains input
230 Mains input, 230Vac
Logic and data power supply terminals
M1 Master power supply unit configuration input
M2 Master power supply unit configuration input
+V Logic power supply output, +24Vdc
0V Logic power supply output, 0Vdc
+VT Logical backup power input
0VT Logical backup power input
DU Outgoing data line
DE Incoming data line
0D Data line ground
Voice line power supply terminals
+F Voice line power supply output, +33Vdc
0F Voice line power supply output, 0Vdc
+FT Audio backup power input
0FT Audio backup power input
TECHNICAL SPECIFICATIONS
Power supply voltage: 230 Vac ±10%
(+V, 0V) Logic output voltage: 24 Vdc ±5% 700 mA
(+F, 0F) Logic output voltage: 33 Vdc ±5% 65 mA
Data line (DU, 0D)
output voltage: (only for units configured as Master)
24V -7% to 5%
Service temperature range: -5 to 45 °C
LOGIC POWER SUPPLY +V, 0V
The power supply unit is sized for a typical system configuration
consisting of one entrance module with directory Ref. 1038/15 and 35
fourport decoders Ref. 1038/34.
Complex systems can be set up using two or more power supply units,
each of which supplies a separate group of devices through output
terminals +V, 0V. Never connect two or more power supply units
in parallel.
• Each power supply unit Ref. 1038/20 can be connected to a
maximum of 70 Load Units (LUs).
VOICE LINE POWER SUPPLY +F, 0F
The power supply unit can supply one or more calling devices.
In systems with a single voice line, the speech signal power supply
unit can also be used to supply multiple entrance panels.
In systems with two voice lines, the speech signal power supply unit
can be used to supply the voice line of a SINGLE entrance panel.
For the remaining entrance panels, use additional speech signal power
supply units Ref. 1038/25.
In both cases, see the system diagrams provided in the Integrated
Systems Technical Manual.
DATA LINE POWER SUPPLY DU, 0D
The power supply unit can supply the data line for the entire system. In
the event of a malfunction, the circuit breaker will automatically isolate
the fault.
However, only one of the power supply units Ref. 1038/20 in the
system must supply the data line. The power supply unit used for
this purpose is referred to as the MASTER unit. All other power supply
units are referred to as SLAVE units. A power supply unit is configured
as the MASTER by connecting its terminals M1 and M2 together.
Notice: The data reference ground (0D) of all SLAVE power supply
units must be connected to terminal 0D on the MASTER power supply
unit using a dedicated conductor. For examples of wiring layouts, see
the Integrated Systems Technical Manual.
DATA LINE ISOLATION
In the event of a short circuit on the data line, the power supply unit
circuit breaker isolates the fault to ensure that all remaining devices
can continue to operate.
Case A
If the fault occurs on the outgoing data line connected to a riser
cable power supply unit, only the devices in the secondary riser cable
concerned will be isolated. The remaining portions of the system will
continue to operate:
SHORT CIRCUIT
DU
DE
SLAVE SLAVE
DU
DE
MASTER
DU
DE
ISOLATED
DU
DE
= ISOLATED
1038/20
= OPERATING
1038/20
DU
DE
DU
ON
DE
Sch. 1038/20
180 mm
(10 DIN modules)
75 mm
96 mm
WARNING: Be sure to follow the instructions indicated in the
section headed “Installation Requirements”.

POWER SUPPLY UNIT AND RELAY
4
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sec.6 DIGIVOICE - Technical Manual
DIAGNOSTICS AND TROUBLESHOOTING
Three LEDs are provided on the top of the power supply unit housing:
ON: Two-color LED. Turns green to indicate that +V -0V power is
supplied, or red to indicate an error condition (see table below).
If the LED is off, no +V -0V power is supplied. However, +F -0F
voice line voltage is present at all times.
DU: Red LED. Turns on if there is a short circuit on the outgoing data
line.
DE: Red LED. Turns on if there is a short circuit on the incoming
data line.
Troubleshooting summary:
SITUATION “ON”LED “DE”LED “DU”LED
MASTER OK Flashing green Off Off
SLAVE OK Green Off Off
1) Several power supplies Red Off Off
in parallel on +V
2) Several MASTER Flashing red Off Off
power supplies
in system
3) Short circuit on Green Red Off
incoming data line
4) Short circuit on Off Off Red
outgoing data line
1) Turn off the system, check wiring connections on all terminals +V,
and turn system back on.
2) Turn off the system, check that terminals M1 -M2 are connected
together on only one power supply unit, and that the latter’s
terminal DE has no conductors connected to it. Turn the system
back on.
3) May also occur on SLAVE power supply units whose terminal DE is
not connected to terminal DU on the MASTER power supply unit.
The power supply unit circuit breaker will isolate the data line,
and will automatically reset when the cause of the problem is
eliminated.
4) In this case, the power supply unit cuts off power to terminals
+V -0V for 5 seconds, and then restores power and checks
whether the fault persists. If it does, the unit cuts off power again,
making successive attempts every 60 seconds until the problem is
eliminated.
POWER SUPPLY UNIT WITH CIRCUIT BREAKER Ref. 1038/20
INSTALLATION - DIAGNOSTICS AND TROUBLESHOOTING
POWER SUPPLY UNIT WITH CIRCUIT BREAKER Ref. 1038/20
Case B
If the fault occurs on the incoming data line, each power supply unit on
the riser cable will isolate the line so that the devices in the secondary
riser cable connected to the unit can continue to operate:
INSTALLATION
The power supply unit can be installed on a DIN rail, or can be wall
mounted using screws and wall plugs.
To facilitate installation, carry out the following operations:
1) With the system off, connect wiring to all devices and power supply
units.
2) Check that ONLY ONE power supply unit in the system is
configured as the MASTER unit (i.e., has its terminals M1 and M2
connected together).
3) Check that no conductors are connected to MASTER power supply
unit terminal DE.
4) Check that at least one conductor is connected to each terminal
DE and DU on the SLAVE power supply units.
5) After the above checks have been carried out, supply power to the
system and check that ALL power supply units are operating (see
the following section).
Note: Power supply units will be activated within 5 seconds. Correct
MASTER-SLAVE configuration is checked automatically, but
ONLY upon activation.
SHORT CIRCUIT
DU
DE
DU
SLAVESLAVE
MASTER
ISOLATED
DU
DE
= OPERATING 1038/20
DU
DE
= ISOLATED 1038/20
DU
DE
DE
DU
DE
ROSSO = CORTOCIRCUITO SU LINEA DATI USCENTE
RED SHORT-CIRCUIT ON OUTGOING DATA LINE
VERDE LAMP. = ALIMENTATORE MASTER
FLASHING GREEN MASTER POWER SUPPLY
VERDE = ALIMENTATORE SLAVE
GREEN SLAVE POWER SUPPLY
ROSSO = PIU' ALIMENTATORI IN PARALLELO
RED SEVERAL POWER SUPPLIES IN PARALLEL
ROSSO LAMP. = PIU' ALIMENTATORI MASTER NELL'IMPIANTO
FLASHING RED SEVERAL MASTER POWER SUPPLIES
ROSSO = CORTOCIRCUITO SU LINEA DATI ENTRANTE
RED SHORT-CIRCUIT ON INCOMING DATA LINE
DU
DE
ON
DU
ON
DE
+F
~
0F
0
230
M1
M2
+V
0V
DU
DE
0V
SLAVE
DE
~
0D
0
230
M1
M2
0F
+F
DU
0V
+V
MASTER