Detectors
The detectors are connected with a 4 or 6 wire cable to the inputs of the control panel, I/O module or input +
8OC module. When using the EOL line principal, a 4 wire cable will do, otherwise a 6 wire cable must be
used. This cable can be a standard cable (008554, 008556) or a shielded cable (008684, 008686). A Visonic
detector needs, in the worst situation (no mains power and minimal battery voltage), at least 9V to run
properly.
When using the EOL principal, you can use the EOL plug-on boards, which are available for most Visonic
detectors. The used end of line resistors are already placed in this small circuit board, so only the 4 wires
need to be connected. The current drain of the detectors is mentioned in the product’s manual or can be
requested at your supplier. Below are the current drains of most Visonic detectors:
CORAL 15
mA
GLASSTECH
AM
25
mA
JET
17
mA
DUO-200
23
mA
DISCOVERY
17
mA
DUO-240
23
mA
SRN-2000
17
mA
DUO-220AM
30
mA
DUET
20
mA
K-940
17
mA
DUO-220
23
mA
K-980
18
mA
HUNTER
AM
17
mA
K-980DE
23
mA
GLASSTECH
25
mA
NEXT
8
mA
Input with 8 OC outputs module
The input + 8 OC module gets its power supply from the RS-485 bus and has an own current drain of 58mA.
The 8 OC outputs can for instance be used for connecting LED’s. For each connected LED you should add
10mA to the input’s current drain. Suppose 8 Coral Plus detectors and 8 LED’s are connected to an input +
8OC module. In total this will mean a current drain of 258 mA. When using the recommended cable
(008654) this will mean a voltage drop of 2,58V for each 100 meters. The input +8 OC module needs at
least 8V, so with a voltage drop of 2V, the maximal distance between the input + 8 OC module and the
nearest power supply is about 85 meters.
I/O module
The I/O module has its own power supply, which can supply up to 3,0A @ 12VDC. The current drain of the
I/O module circuit board (74mA) and the battery charging current (max. 500mA) should be subtracted from
this. The battery is charged with a stabilized current, which can be adjusted, and is charged through a
resistor. By default, the current value is set to 13,8V. The I/O module performs two different automatic
battery tests, which are explained in the chapter “Battery test and mains power failure”.
The I/O module can be placed at the maximal distance from the control panel, taken that the recommended
RS-485 bus cable is used. The I/O module is used to supply keypads and expansion modules with power,
when these are placed a long way from the control panel.
Synoptic tablet
The synoptic tablet or interface obtains its power from the input + 8OC or I/O module. As told, the input +
8OC module gets its power from the RS-485 bus. When the synoptic tablet or interface gets its power from
the input + 8OC module, do not forget to add the extra current drain from the synoptic tablet to the current
drain of the input + 8OC module. When the synoptic tablet or interface is connected to the I/O module, the
current drain is subtracted from the available power supply.
When using the synoptic tablet with 8 LED’s, each connected tablet has a current drain of maximal 100mA.
When using the synoptic tablet with 48 LED’s, the current drain will be higher, because more LED’s are
being used. The maximal current drain of the synoptic tablet with 48 LED’s will be 490mA.
AlphaVision NG installation manual Rev. 2.0 27-08-2003 Blz. 31/101
When the synoptic interface is used, the maximal current drain will depend on what has been connected to
the outputs. In theory each output can give 100mA, so the synoptic interface could use up to 4, 81A (48 x
