MA Digital Dimmer, Руководство пользователя, Страница: 12 / 20

MA Lighting Technology GmbH . Dachdeckerstr. 16 . D-97297 Waldbüttelbrunn . Fax: + 49 9 31 4 97 94 29 . www.malighting.de
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5. Starting the Dimmer
Please check all relevant safety instructions (see also Chapter 9), the EN-standards and requirements
before starting the dimmer!
Additionally the local electric power company should be informed before starting dimmers with phase
angle control of such power.
The MA Digital Dimmer can be built in a 19" rack mount housing (case). For additional stability
horizontal bars should be used.
Phasedistribution: L1 = Channel 1 - 4, L2 = Channel 5 - 8, L3 = Channel 9 - 12.
The minimum load is 20Watt.
5.1 Mains Supply and earthing
The dimmer should be connected to the three phase mains power with neutral (3x230 Volt Y) via an 5
pin 63A- or 32A-CEE connector. Earth must be connected.
The CEE connector is not included. The 3 phase power must be equipped with a 30mA-"Fail current
protecting switch".
The dimmer can also be used in 1- and 2- phase mode at a 230 Volt mains supply. In this case the max.
Load is only 40% of the normal maximum load (cable of the neutral is too thin!).
If "Socapex" connectors or "Hot-Patch-St17" connectors are used an additional Earth must be applied
between dimmer and load cables or load distribution. Reason: The Socapex connector has no earth
contact which is conducting at first!
After connecting and switching on no ERROR messages should show in the display; the three
voltmeters should display 200-240 Volt. When one phase is lost, the green LED in the middle button
will blink.
5.2 Fan Control
Please check good air-supply for the dimmer. The fan which takes the air in and transports it to the front
where it is blown out is at the backside.
The fan is temperature-controlled. The first stage starts at 40 °C, the second at 50 °C.
At 80 °C the message "OVERTEMP" shows and the red LED´s in the buttons will blink. Please check
whether the fan is running correctly or whether the dimmer is overloaded!
When the temperature increases further, the dimmer is switched off and a beep will be started.
5.3 Overvoltage
The MA Digital Dimmer is equipped with a mains power observation.
This checks an overvoltage, which is regularly caused by exchanging phase and neutral or having lost
neutral.
In this cases the power protection reacts immediately:
- All channels are switched off,
- the red LED´s blink,
- a loud "Beep" starts.
If the phase and neutral are exchanged for a longer time (>15min.), the dimmer can be damaged.