82
MP500/4N-8-16 Installation
Figure 60 - Diagrams of input connections
IMPORTANT!
In order to maintain conformity with Standard EN50131-3, the CUSTOMIZATION functions of the INPUTS
present in the control panel must be modified.
IMPORTANT!
In order to maintain conformity with Standard EN50131, the inputs must not be programmed as NORMALLY
CLOSED and NORMALLY OPEN in that they would not be protected against short circuits and cut wires.
IMPORTANT!
In order to maintain conformity with Standard EN50131, the inputs must not be programmed as SHOCK and
ROLLER in that they would not be protected against short circuits.
IMPORTANT!
Each sensor must be powered by the device that controls it (control panel, expansion, keypad, or reader). The
balancing resistors must be connected to the positive of the power supply of the same device. Connections with different power
supplies may cause false alarms.
It due to wiring problems this is not possible use the NC or NO type inputs.
Colour code for 15 kohm resistor, tolerance 1%
All the resistors provided with the MP500/8 and MP500/16 are 15 kohm, tolerance 1%.
IMPORTANT!
It is not necessary to close the unused inputs because they can be excluded via the programming.
IMPORTANT!
The SAB inputs must also be reclosed by a 15 kohm balancing resistor.
The table below indicates the voltage intervals used in the various types of inputs.
The input status according to type
voltage present on the
input terminal (*)
resistor between
the input and +V2
N.C.
dual balancing
N.C.
single
balancing
N.C.
N.O.
TAMPER
(wire short circuit)
TAMPER
(wire short circuit)
STAND-BY
ALARM
INPUT
11.8 ÷ 13.8 V
0
Ω
STAND-BY
STAND-BY
6.7 ÷ 7.9 V
15 k
Ω
ALARM INPUT
ALARM
INPUT
ALARM
INPUT
STAND-BY
4.6 ÷ 5.6 V
30 k
Ω
TAMPER
(cut wires)
0 ÷ 0.5 V
∞
Ω
(
*
) with voltage between 12 V and 13.8 V.
Table 8 - Interval of voltage present at inputs
