MERak
MMk-656
Compact Emergency Telephone for Lifts
Rev. M1.5 – S2.5
©
MERak. All rights reserved
Instruction and Connection Manual
9 of 20
ground level with the doors open), the car alarm should be disabled so as to avoid false alarms due to
vandalism.
For this case, the emergency telephone MMk-656 has an input at the pair of terminals
J1 FILTR
and
J1 FILTR
. When this input is short-circuited, generation of alarms from the car is disabled.
7.
CONNECTORS
To locate the connectors, see the wiring diagram in section 14.
7.1.
Switches (J1)
At the J1 connector, two different switches can be interconnected. These can be
configured either as switches of type normally open (NO) or normally closed (NC), to effect
which the following command should be used
*12#
.
- At the pair of terminals
J1 ALC
and
J1 ALC
the car alarm is connected.
- At the pair of terminals
J1 FILTR
and
J1 FILTR
, activation of alarm filtering can be connected.
When this input is closed, generation of alarms from the car is disabled. This functionality is
required by the standard EN 81-28 and permits disconnection of the alarm when the car is not
capable of trapping persons.
- At the pair of terminals
J1 SOS/EOA
and
J1 SOS/EOA
the switch to generate a maintenance
alarm for the operators, which generates a call to the number stored in register 01 of the
telephone memories, can be connected. This possibility is included so that maintenance
personnel have a direct line in the event of problems, which is totally independent of the
conventional car alarm. It is possible to install various generation points in parallel without
any problem. This switch is not affected by alarm filtering.
Should there be an alarm open, this same switch also serves as the alarm clear switch,
for activation once rescue has taken place, as required by European standard EN 81-28.
- At the pair of terminals
J1 AUX OUT
and
J1 AUX OUT,
an LED indicator may be connected, or a
relay activated, depending on the application, with a maximum permitted power of 1W at 12V.
This output performs different functions according to how it is programmed by means of the
parameter
*28
: it can be activated if a cut in the electricity grid supply is detected, or it can be
configured to generate an output pulse of duration 1 second on receiving a command.
NOTE
: The switch terminals are only designed to connect switches, and not to supply
other lift peripherals: connection of other devices could damage the equipment inputs.
7.2.
Power supply (J2)
The MMk-656 module is fed by the
J2
connector. The equipment supply tension is 10 Vdc
- 30 Vdc.
Connect the regulated power supply at the terminals
J2 V+
(10-30 Vdc) and
J2 V
- (GND).
