THE LINEAR 3,5A/4,5A POWER SUPPLY - Rev. D
X-PSU / Z-PSU
J1 :
110 mm 12Vdc Not regulated
for door openers ONLY.
+J1B + J1A MAX. 2A/3A.
100 mm +
J2B J2 :
12,8Vdc regulated
+ for controller
15,5V/1,5 A J2C
and Card readers
ONLY.
F3: F1: J2A + MAX. 1,5A.
Transfo.
J6 2/3A 1,5A
(door) (load) 220V on
10V/2 or 3 A Fail
RL1 Batt Low Dimensions in mm :
110x100x53
F2 : 3 A (Batt)
J5 RL2
0,5A fast acting fuse 0v +Bat Fault Bat. Low
208240Vac JP1: Fail-Safe J3 J4
To controller
Ii inputs
J3 : Battery back-up connector :
Power supply version ‘X’: 12V-6A/h Lead Acid battery.
Power supply version ‘Z’: 12V-17A/h Lead Acid battery.
The Power Supply has two different channels, connected to two independant secondaries of the transformator:
- 15,5V/1,5A in J6 which may deliver:
- 13,70Vdc to charge Lead Acid battery through J3 (protected by fuse F2).
- 12,8Vdc/1,5A regulated for the TPL and Card readers through J2A, J2B and J2C (protected by fuse F1).
- 10V/2A if Power Supply version ‘X’ (or 10V/3A if version ‘Z’) in J5 which may deliver 12Vdc/2A if version
‘X’ (or 12Vdc/3A if version ‘Z’) not regulated for door openers through J1A and J1B (protected by fuse F3).
Notes:
1- Never connect at J3 any load except the Lead Acid battery itself.
2- Use only 1,5Amp F fuse for F1, 3 Amp F for F2 and 2 (or 3) Amp F for F3. (F: « Fast Acting »)
3- Volatge at J3 output without battery is factory set to 13,7v.
J1A and J1B connectors for door opener(s) :
J1A and J1B are two connectors in parallel for the same 12Vdc/2A (or 12Vdc/3A if version ‘Z’ ) power supply
output, for electric door opener(s).
J2A, J2B and J2C connectors for the controller and card reader(s):
J2A, J2B and J2C are three connectors in parallel for the same 12,8Vdc/1,5A power supply output.
J2A may be connected to the controller and J2B and J2C to card readers.
The Linear Power Supply Rev. D Page 1/2
Power Failure Operation
During power failure, the battery pack supplies power to the TPL board via J2 and also to the door openers via J1.
During this mode, 0v is common to the two channels. To prevent door openers to be powered during main power failure
(« Fail safe » mode), do not install the JP1 « Fail-safe » jumper.
During power failure, the J1 and J2 outputs will jump to the battery voltage.
The J1 voltage will react as follows :
- Mains failure detection time : 20 msec max. After this time, the minimum voltage on max. load (2A) is 6V
- Relay 1 switching time : 3 msec. max. After this time, voltage at J1 is the battery voltage.
An internal circuit shuts the battery when its voltage reaches 10,5 Vdc in order to preserve its longivity.
Charging the battery to 95% of its capacity will last about 24 hours for a 6A/h battery (with Power Supply version ‘X’)
and about 48 hours for a 17A/h battery (with Power Supply version ‘Z’) .
Back-up time during power failure:
The following two examples show how long time a full charged 6A/h battery may back-up the system during power
failure:
1- Load configuration: TPL board with two magnetic card readers. Current consumprion: 130 mA max.
(Typical 100 mA.)
Without door opener activation, the back-up time is about 46 hours.
When the battery also powers door openers, its back-up time T is given by the following formula:
(6 ( N I D
3600)
T
0.13
Where N= number of accesses, I=Door opener consumption, D=Door opening time.
Example : a TPL board with two magnetic card readers which operate two 0,5A door openers and open 1000 times
the doors during 4 seconds will operate 41,8 hours during power failure.
The number of accesses may also be computed from this algorythme: during 40 hours, the same configuration will allow
1440 accesses.
2- Load configuration: TPL board with 16 relays (without card reader):
T=6/0.04+n.0,016
where n is the number of activated relays.
Example: if 4 relays are always activated, the configuration will last 57 hours.
Green « 220V ON » Led :
The « 220Von » led is ON as long as the 15,5Vac power is present on J6.
Red « Fail » Led :
The red « Fail » led will light when :
- Either one of the fuses F1 or F3 has blown up
- Or no voltage is detected on J6 (Mains off for example)
In this fail conditions, the FAULT signal from J4 is low.
Yellow « Bat low » Led
The yellow « Bat low » led will light when the Lead acid battery voltage fails below 11,25Vdc 2,5% (1,875V per
battery cell). Under this condition, only about 20 % of the battery energy is available.
The led will turn off when the battery voltage is above 11,8Vdc 2,5%. The battery is then charged to at least 50% of its
capacity.
In this fail condition when the yellow led is turned on, the « Bat. low » output signal from J4 is low.
« Fault » and « Bat. Low » signals on J4.
The « fault » signal is low when the Led red « Fail » is on and the « Bat. Low » signal is low when the yellow « Bat.
Low » led is on.
These two signals may be directly connected to alarm inputs of the controller to raise an alarm in the fault conditions.
They may be shorted together to a same alarm input.
Power supply operating ambiant temperature : -20 to +55°C.
The Linear Power Supply Rev. D Page 2/2