Reo Elektronik REOTRON MEW, Руководство по эксплуатации

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Operating Instructions
REOTRON MEW
REO
UK LTD 12
ELEKTRONIK
ELEKTRONIK ELEKTRONIK
ELEKTRONIK
10.0 Fuse change
Switch unit off before changing fuse!
The semiconductor fuse can be found in the left hand section of the front panel. To change the fuse
the two screws marked "x" must be loosened. The cover can then be removed by sliding it to the right.
For MEW/xxx type units the fuse can be found in the front panel.
Fuse Types:
MEW
10/xxx FF 16
MEW 20/xxx ET 35
MEW 50/xxx ET 80
MEW 80/xxx EET 140
MEW 110/xxx EET 160
MEW 150/xxx 6.6 URB 000 BS88/250
When ordering spare fuses use capital letters for fuse types.
11.0 Installation Guidelines
The unit is designed for panel mounting. It should be installed vertically with the terminals at
the bottom. Ensure that there is sufficient air space in unventilated cabinets.
The units can be placed side by side with a minimum clearance of 30mm. If the units are
mounted one over the other, then there must be a clearance of approximately 250mm.
The control cables should be shielded and the shield should be connected to earth.
12.0 Guidelines on Electromagnetic Interference
INTERBUS-S is a serial data transfer system which was conceived for applications in an industrial
environment. When correctly installed, INTERBUS-S complies with all the requirements specified in
the standard IEC 801 for data transfer systems in a harsh industrial environment. When the interface
module is used in an electromagnetic, interference prone, area, then the possible sources of
interference should be suppressed.
Interference can be due, in particular, to:
•
Protection devices
•
Switching of inductive loads
•
Solenoid valves
RC networks and varistors suppress interference. Manufacturers supply correctly sized components
for suppressing solenoid coils.
Electrical spikes, which can affect bus cables in an industrial environment, can be suppressed by a
correctly fitted screen. The following measures provide the best screening results:
•
Cover fixing screws of bus cable plugs and conductors at equal potentials.
•
Only use connectors with a metal or metalised housing.
•
Spread out the screen in connectors.
!