UNI-Geräte E. Mangelmann Elektrotechnische Fabrik GmbH
Holtumsweg 13, D-47652 Weeze, Tel. +49 2837/9134-0, Fax. +49 2837/1444
www.uni-geraete.de [email protected]
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TM 4021
220.100.040-09
Solenoid Drive
Series MG…X, MG…-A.X
With - protection for intended use in ex- zone 1
in accordance with 2014/34/EU (ATEX 95)
Operating instructions
(translation)
Explosion protection
The solenoid actuators and integrated solenoid valve controllers conform to explosion protection type
"de" category II2G as well as “td” category II2D and can be used in zones in which explosive gas,
vapour, mist, or air and dust mixtures may occur, i.e. in explosion zone 1 and 21. The electrical and
thermal parameters of the separate variants can be obtained from the respective type plates. The
explosion protection applies to operation of the device. For installation, maintenance or repairs, it is
imperative that the relevant explosion protection regulations, especially EN 60079-14 (VDE 0165 T1),
are observed. The electrical installation work must be carried out by, or under the supervision of, a
skilled electrician, with additional observance of the relevant national regulations (VDE 0100 in
Germany). Prior to installation, the constraints of the device marking must be compared against the
envisaged operating conditions to ensure operation is as intended.
Basics
Valve – solenoid actuator – combinations are supplied fully assembled and tested as standard. When
replacing or changing solenoid actuators, care should be taken that the combination with a UNI valve is
approved and the magnet is properly secured to the valve (permissible tightening torque, for example).
The device-specific serial number for unequivocal identification and the year of build can be obtained
from the type plate.
Solenoid actuators are electrotechnical components that are inoperative without the associated valve
and also may not be operated for themselves alone! For outdoor installations always use solenoid
actuators with a IP65 rating and a rain cover. Any solenoid actuators showing signs of damage are not
to be installed and must be replaced. If the solenoid actuators are subject to external loads of an
exceptional kind, additional protective measures are to be taken by the operator, if required. Any
undefined or unsuitable changes to the device may negatively influence the explosion protection and in
the worst case even render it totally ineffective. UNI devices shall accept no liability for any loss or
damage (to the device/over and above this) which have been brought about by change(s) to the device.
The same applies for claims under the warranty.
Description of the device
The solenoid actuator (pot magnet) is used as an actuating unit for valves. Constructionally the actuator
consists of a magnet housing (tube, base, magnetic disk and lid), a coil and electronics. Depending on
the version, the solenoid actuator may be operated with DC or AC voltage. The version that runs off AC
voltage has a built-in rectifier. Therefore when energised, direct current flows through the coils of all
types. The solenoid actuators of type MG…X have a conventional coil with a winding and resulting
average sustained pickup forces with average current consumption in continuous operation. The
solenoid actuators of type MG…A.X on the other hand have two windings on their coil body. One
pickup and one holding winding. The TS200 / TS900 / TS1500 built-in valve controller (rudimentary in
"…A…" actuators) switches over after a defined time from the higher pickup power to the lesser holding
winding power. In this way, very high pickup forces can be achieved short-term with simultaneous low
current consumption in sustained (holding) operation.
