Alarmtech MC 740-E-M14 Manual de usuario

MC 740-E-M14 Instruction Manual 4-MC740-E-M14-01

Detectors

Magnetic Contact

Surface mounting

Instruction Manual MC 740-E-M14

DESCRIPTION

MC 740-E-M14 is a surface mounted magnetic contact used

in both alarm and security access control systems for

protection of doors and windows against unauthorised

opening. The magnetic contact is designed to be mounted in

places with limited space. The magnet part is easy to mount

with supplied rivet or screw.

CIRCUIT DIAGRAM

OPERATING PRINCIPLE

MC 740-E-M14 magnetic contact has two parts: the contact

part with a reed switch and the ring magnet part. In its

neutral position the reed switch remains closed under the

force of the magnetic field. Opening the monitored object

increases the distance between the reed switch and the

magnet. This reduces the influence of the magnetic field on

the reed switch until it opens and activates an alarm.

Magnetic contacts should not be installed in the vicinity of

strong magnetic fields.

TECHNICAL DATA

Working environment

Wood

Steel

Make distance

typ. 25 mm

not recommended

Break distance

typ. 28 mm

not recommended

Contact type

form A, SPST

Switching voltage max.

48 V DC/AC

Switching current max.

500 mA DC/peak AC

Contact rating max.

10 W

Cable

ф 3,4 mm, 4x0,182 mm2

Operating temperature range

-40°C to +70°C

Operating humidity

max. 95% RH

Housing material

plastic ABS

Dimensions:

Contact part

60 x 5 x 13,5 mm

Magnet part

Ф14 x 3,5 mm

MC 740-E-M14 Instruction Manual 4-MC740-E-M14-01

INSTALLATION

Depending on the application, contact and magnet should

be installed in either front-to-front or side-to-front

configuration. Installation drawings show the correct

positioning of the contact parts. The contact should be

mounted on the stationary part of the monitored object (ex.

door frame) and the magnet on the movable part (ex. door

leaf, roller-shutter).

During installation of contact part in window or door frame,

it is advised to leave additional cable loop for about 10cm

long.

After the installation, use an ohmmeter to check the

electrical connections and test the operation of the

magnetic contact.

Warning: applying excessive force to the housing of the

contact may damage the glass body of the reed switches

inside.

Warning: installation in ferromagnetic environment is not

recommended.

INSTALLATION DRAWINGS

Correct positioning of side cable inlets ensure the maximum

working distances.

MC 740-E-M14 in front to front configuration

MC 740-E-M14 in side to front configuration

We reserve the right to changes without notice.

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