User Manual MKA 500 / MKA 800
Conforms to
Issue 21.02.2023_01 Page 50
Hint
If you want to look for further terms that do not appear in this index, please use the search
function in Adobe Acrobat Reader.
16
Safety instructions
To avoid any danger of electrocution, the housing must never be removed nor opened at the back.
None of the parts inside can be serviced by the user himself. Leave the servicing to the experts! To
avoid fire or electrocution this appliance must not be exposed to humidity or rain.
1. Manual:
Read all safety instructions and all items in the user manual, before using the controller for
the first time! Keep the safety instructions and the user manual in a safe place in case you need to
refer back to them at a later date!
2. Installation instructions:
The appliance should always be installed by an authorized and
experienced specialist. Please follow the specific safety instructions as well as the VDE guidelines
during installation. The appliance should only be fitted in an approved and specifically designed
waterproof switching cabinet (metal housing) and should only be used for the purpose it was designed
for and within the limits of its technical data.
We recommend that any down-streamed inductors (relays, contactors, signal transmitters,
valves etc.) with RC elements should be checked for interference. These are available on the
retail market (e.g. Siemens 3 RT1916, Klöckner-Moeller, etc.).
3.
Analogue in- and outputs:
Do not apply separate source voltage to the in- and outputs (4-20mA /
0-10V and Pt100)
4. Sensor leads
as well as analogue in and outputs should be run separately from any voltage
carrying leads, this also includes control wires carrying separate source voltage. It is vitally important
that the sensor leads have a metal shielding and that this shielding is connected to the sensor housing
itself
.
5. Relay outputs:
The relay outputs are potential free and the maximum load of 250V AC and 4A
must not be overshot.
6. Water and humidity:
Never use the unprotected appliance near water, e.g. near a bath tub, water
basin, sink, washing machine, a damp cellar or near a swimming pool. The appliance is only
waterproof on the front (in compliance with IP65 or IP67). The back and side panels must not come
into contact with water.
7. Ventilation:
The appliance must have sufficient ventilation, the ventilation slits in the housing must
never be covered up, or blocked by objects inserted into the slits.