UNIK2E230
V2
ENGLISH
ISUNIK2E230v2_GB_10_12.doc
13
7. PROGRAMMING THROUGH GTSYSTEM
The GTSYSTEM is an autonomous multi-functional terminal that can be used on various Prastel products both
for testing and function modification. In the case of UNIK2E230 control unit, it allows:
•
modification or visualisation of operating parameters,
•
visualisation of the counter of completed manoeuvres,
•
visualisation of the control unit status and diagnostic messages.
8. ACCESSORIES ABSORPTION CHECK INFORMATION
(Transformer dimensioning)
The current available for the accessories is given by the power available for the accessories divided by the
voltage of the accessories 24VDC.
Iacc = Pacc / 24
The power available for the accessories is given by the transformer power, less the power absorbed by the
control unit (8W).
Pacc = Ptras – 8
On board the control unit, there is a 20VA transformer for which the available power is 12W and the available
current is 500mA as described in the technical characteristics.
Below un example of calculation of the current available for the accessories.
Control Unit
Transformer
Power
Power
absorbed by
the control
unit
Power available
for the
accessories
Voltage of the
accessories
Current
available for the
accessories
UNIK2E230
20VA
6.4W
13.6W
24V
560mA
The following table shows the average absorption of the most common Prastel/VDS accessories
:
Product
Absorption
Photocell FOTO30SDE (couple TX+RX)
50 mA
Photocell FOTO35SDE (couple TX+RX)
50 mA
Induction detector MLX24AZ
40 mA
Receiver MR1E
20 mA
Microwave detector DM30
80 mA
Microwave detector DM60
100 mA
Amplifier for infra-red barrier FOTOTEST2D
30 mA
Pneumatic edge receiver TCO4RX
30 mA
Standalone keypad EASYBKA
100 mA
Standalone proximity reader EASYMINI
30 mA
Example: connecting 2 pairs of FOTO30SDE photocell and a MLX24AZ detector the overall average absorption
is 140mA. Should it be necessary to connect accessories with an overall average absorption that is more than
that available, the transformer must be replaced with a more powerful one.
Use transformers with a secondary of 18 or 20VAC.
Ptras = transformer power
Pmot = motor power
Iacc = current available for accessories
Pacc = power available for accessories
Intelligent Security & Fire Ltd.
