Merak MMk-656, Instruction Manual

Page: 6 / 20

MERak
MMk-656
Compact Emergency Telephone for Lifts
Rev. M1.5 – S2.5
©
MERak. All rights reserved
Instruction and Connection Manual 6 of 20

Programmable ID (20 digits maximum) to identify the origin of the call in the operator's
database or at the alarm reception centre.

Supply tension from 10 to 30Vdc. Maximum current drawn 150mA.

Internal lead-acid battery charger incorporated. Maximum current drawn during battery
charging 400mA.

Activation and deactivation of car microphone (privacy mode).

Remote control and programming of the equipment from a PC using a modem, or from any
telephone.

Automatic “ call progress ” handling and control of call retries.

Remote monitoring of equipment status.

Different 4-digit access codes for different security levels (necessary for access to any function
or action on the equipment).

Complete remote control and maintenance capacity via telephone from the centre.

Possibility of connecting an intercom (telephone) to programme the set or communicate with
the car.

Possibility of connecting one or several graphical floor indicator modules.

Voice synthesizer to announce the floor or for fault advice.

Possibility of interconnecting up to 4 sets on the same telephone line with no need for extra
cabling.

Flush mounting in the panel with M6 through screws or using double-sided adhesive.

Different languages for programming and up to 2 simultaneous floor synthesizer languages.
2. LOCATION, CONNECTION AND START-UP
For optimum device performance, consider the following recommendations and electrical connection
location. Then proceed to start-up.
2.1. Location
The location recommended by MERak for the emergency telephone is in the lift car behind the
button panel, so that a trapped person can use the incorporated speaker and microphone to
communicate with the alarm centre.
In the event that the set cannot be installed behind the button panel, the J7 expansion connector
can be used to connect an audio module where it is desired. To facilitate mounting, the outer casing
has some through slots in M6 format, or the supplied double-sided adhesive can be used.
2.2. Electric Connection
With respect to the most advisable wiring scheme for the set, the ideal is to have a sufficiently
regulated power supply (10 – 30V
DC
, 1A), as close as possible to the equipment. In this way,
unnecessarily long cabling, and capture of electromagnetic interference by the equipment from
adjacent electronic devices in the lift are avoided.