10. Safety advices
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10. Safety advices
Please read the following safety advices and the assembly chapter 2 before installation and
keep it for future reference.
Proper use
The M2-11-device is designed for the evaluation and display of sensor signals.
Danger! Careless use or improper operation can result in
personal injury and/or cause damage to the equipment.
Control of the device
The panel meters are checked before dispatch and sent out in perfect condition. Should there
be any visible damage, we recommend close examination of the packaging. Please inform the
supplier immediately of any damage.
Installation
The M2-11-device must be installed by a suitably qualified specialist (e.g. with a qualification
in industrial electronics).
Notes on installation
• There must be no magnetic or electric fields in the vicinity of the device, e.g. due to
transformers, mobile phones or electrostatic discharge.
• The fuse rating of the supply voltage should not exceed a value of 0.5 A N.B. fuse!
• Do not install inductive consumers (relays, solenoid valves etc.) near the device and
suppress any interference with the aid of RC spark extinguishing combinations or free-
wheeling diodes.
• Keep input, output and supply lines separate from one another and do not lay them parallel
with each other. Position “go” and “return lines” next to one another. Where possible use
twisted pair. So, you receive best measuring results.
• Screen off and twist sensor lines. Do not lay current-carrying lines in the vicinity. Connect the
screening on one side on a suitable potential equaliser (normally signal ground).
• The device is not suitable for installation in areas where there is a risk of explosion.
• Any electrical connection deviating from the connection diagram can endanger human life
and/or can destroy the equipment.
• The terminal area of the device is part of the service. Here electrostatic discharge needs to
be avoided. Attention! High voltages can cause dangerous body currents.
• Galvanic isolated potentials within one complex need to be placed on an appropriate point
(normally earth or machines ground). So, a lower disturbance sensibility against impacted
energy can be reached and dangerous potentials, that can occur on long lines or due to
faulty wiring, can be avoided.
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