Warnings
Connecting wired inputs
The connection to the mains power supply must be done by an ex-
pert and qualified electrician in accordance with the regulations on
electrical circuits.
• Install a 2-pole trip switch with contact gap of at least 3 mm, or
use an electrical cable equipped with a plug for standard sockets.
• To ensure conformity to the EN 50131 standard, the connections
to any supplementary sirens (whether self-powered or not and
conforming to the standard) must be protected with a balanced
TAMPER line, using the alarm inputs.
• The relay outputs must be used within the voltage and current
value limits shown in the figure.
• To ensure conformity to the EN 50131 standard, conventional de-
tectors connected directly to the control unit must be certified EN
50131 Grade 2 or higher, and operate with balanced lines, there-
fore suitable resistors must be used as illustrated (Fig. 6).
• The +OFF signal is positive when the control unit is disabled and is
used to block any detectors/sirens equipped with the appropriate
input.
• The fault input, if used, triggers the ANOMALY signal and the rela-
tive warning messages.
• All unused inputs may be left without any connection (they do not
require balancing), unless if they are incidentally closed, even tem-
porarily. In this case, the control unit must be disconnected then
re-powered (line reset).
The MNCUTC and MNCUC control units have a circuit board for
connecting sirens and 8 inputs for wired detectors. In addition, there
are two relays that can be programmed on the control unit, used to
repeat control unit notifications or to control generic loads.
8 IN inputs:
configurable to single or double balancing, balanced
impulse counter, NC, NO, impulse counter
1 InKey input:
allows for enabling/disabling the control unit with an
impulsive or bistable programmable contact
2 Tamper inputs,
to be used solely if the alarm inputs are NC con-
figured
1 balanced Tamper input,
always active, used to connect a
self-powered siren
1 balanced Fault input
Warning!
To activate the inputs via cable, they must be closed, with
or without resistors, for at least 5 seconds from the initial power-up.
Electrical connections
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