urmet domus 826 DIGITAL CALL SYSTEM, Руководство пользователя

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826
POWER SUPPLY UNIT DISPLAY AND LEDs
The power supply unit is provided with a display and 5 LEDs which
provide information for the installer.
(11) Two power supply LEDs (LA), 1 red and 1 green.
(12) One red downstream LED (LV).
(13) One red upstream LED (LM)
(14) Seven-segment red display.
(15) One yellow system LED (LI).
The pair of red and green LEDs designated LA (11) provide the
following information:
•
Both off: There is no output voltage. This may be caused by a mains
power outage, fuse cut-in, failure or malfunction.
•
Green LED on: Normal operation.
•
Both LEDs cycle on and off, with the red LED on for approximately
5 seconds, followed by green LED activation for approximately 30
seconds: There is a problem on the downstream data line (terminal
“DU”) as a result of a type 2, 3, or 4 error, or supply voltage is below
18.5 V DC (see below).
NOTE: When the power supply unit is supplied from mains, red LED
LA will go on. After approximately 5 seconds, it will go off and
the green LED will go on. This is normal, and should not be
confused with the on/off cycling described above.
System LED LI (15), can be used to check that system wiring has been
correctly installed. To do so, proceed as follows:
•
Remove the fuse so that LED LA goes off.
•
Watch yellow LED LI: if it goes on, another power supply unit has
been connected in parallel with the unit being examined. Check and
correct wiring.
Red downstream LED LV (12) will go on to indicate that the type of
fault shown on the display has been detected on the downstream data
line (terminal “DU”) and that the output data line (terminal “DU”) is not
connected to the input data line (terminal “DE”).
Red upstream LED LM (13) will go on to indicate that the type of
fault shown on the display has been detected on the upstream data
line (terminal “DE”) and that the output data line (terminal “DU”) is not
connected to the input data line (terminal “DE”).
The display (14) is used to indicate the error codes for problems
detected on the data line.
The following error codes can be displayed:
Code Description
2 Indicates that data line voltage is between 0 and 7 V DC, for
example because of a short circuit across the data line and
“-24”.
3 Indicates that data line voltage is between 7 and 18.5 V DC:
below the minimum threshold required for normal operation.
4 Indicates that the data line is engaged in continuous
transmission.
5 Indicates that supply voltage is below 21.6 V DC (24 V DC
-10%).
NOTE: If supply voltage is below 18.5 V, the power supply
unit will discontinue power output for 5 seconds out of
every 30 in addition to displaying error code 5.
6 Indicates that supply voltage is above 25.2 V DC (24 V DC +
5%).
ERROR CODE MEMORY
The decimal point on the display will fl ash to indicate that one or more
error codes have been stored in memory.
This may occur in the following situations:
•
During normal operation
(no error codes will be shown on the
display).
In this case, the power supply unit has detected a temporary
problem. In other words, the cause which generated the error has
ceased in the meantime.
•
When an error code is shown on the display.
Further errors codes in addition to that shown on the display have
been stored in memory. These codes may be the same as that on
the display, or may differ.
To view codes in memory, short circuit conductor pads “M” and
“-24” for at least 2 seconds.
This operation produces the following effects:
•
The decimal point will go off.
•
The display will show all codes in memory in succession, at intervals
of approximately 2 seconds
•
For type 2, 3 and 4 errors, LED LM or LV will go on to indicate
whether the problem is located on the upstream or downstream line.
After showing all errors in memory, the display will return to its previous
condition and the decimal point will resume fl ashing.
NOTE: To delete error codes from memory, remove and then reinstall
the fuse.
USE IN 1 ST GENERATION SYSTEMS
The power supply unit is provided with a second output terminal
designated “+ 24SP” which can be used ONLY when power supply
unit 826/25 is installed in a fi rst-generation system in order to replace
an 826/5 unit.
In first-generation systems
, two or more power supply units can
be connected in parallel by using terminal “+ 24SP”.
In this case, the data line must not be connected to terminals “DE”
and “DU”, while con24 must be connected to te 24SP.
Under these conditions, LEDs LA and LI should be disregarded, as
they do not provide meaningful information.
USE IN 2 nd GENERATION SYSTEMS TO
REPLACE A POWER SUPPLY UNIT Ref. 826/15
If power supply unit 826/25 is used to replace power supply unit
826/15, connect the data line to terminal “DE” and make a jumper
connection between terminals “DE” and “DU”.
In such cases, type 2, 3 or 4 errors detected on the data line will cause
both LEDs LM and LV to go on.
ERROR CODES
= DATA LINE NOT CONNECTED OR SHORT
CIRCUITED TO -24 2
3
4
5
6
= DATA LINE VOLTAGE BETWEEN 7 AND 18.5V
= CONTINUOUS TRANSMISSION ON DATA LINE
= SUPPLY VOLTAGE < 21.6V
= SUPPLY VOLTAGE > 25.2V
L1 LA
LM LV
LA
LA
LM
LV
= POWER SUPPLY LED
= SYSTEM LED
= DATA LINE ERROR
(TERMINAL DE)
= DATA LINE ERROR
(TERMINAL DU)
13
12
14
15
11
- 24
+ 24
+ 24
DE
DU
- 24
+ 24
POWER SUPPLY
UNIT Ref. 826/5 POWER SUPPLY
UNIT Ref. 826/25
- 24
+ 24
D
- 24
+ 24
DE
DU
POWER SUPPLY
UNIT Ref. 826/5 POWER SUPPLY
UNIT Ref. 826/25
POWER SUPPLY UNIT FOR INSTALLATION ON DIN RAIL Ref. 826/25
POWER SUPPLY UNIT DISPLAY AND LEDs - ERROR CODE MEMORY - USE IN 1
ST
GENERATION SYSTEMS
USE IN 2 nd GENERATION SYSTEMS TO REPLACE A POWER SUPPLY UNIT Ref. 826/15
POWER SUPPLY UNIT
F
OR INSTALLATION ON DIN RAIL
R
e
f.
826
/2
5
POWER SUPPLY UNITS
1
- 70
MT124-019