motors, transformers, circuit breakers or other inductive loads, it must be shock-free and vibration-
free . The ambient temperature at the place of installation must be between −20 °C and 50 °C, with a
relative humidity of < 90 % (noncondensing). Aggressive and corrosive gases and vapors may damage
the unit.
1.2 Instructions for installation
Please read the installation instructions carefully and comply with all conditions mentioned here
during installation of the unit. In case of non-compliance with the Instructions for installation, faults
or malfunctions may occur or the unit may fail to comply with the required EMC guidelines and the
conditions for CE-conformity will not be fulfilled.
Before connection of the unit and before putting it into operation, please ensure that the operating
voltage and the conditions for the operating voltage required by the unit correspond to the
conditions on site (cf. name plate). If required, take any appropriate measures.
Please make sure that the control and load voltage on site are switched off and secured against
accidental reactivation during installation of the device. The electrical connections must be made on
the basis of the connection diagram and the relevant national rules and regulations. The supply lines
for the device must be laid such that they are free from any tensile loads and are not exposed to risks
of shearing or crushing under any circumstances.
The mains connection and the connections for the loads must each be provided by suitable cables
with a cross-section of a minimum of 1.5 mm².
For sensor lines and signal lines, it is highly recommended to use shielded cables (especially if lines
are long and/or running along potential sources of interference); for thermocouples, shielded
compensation lines should be used likewise. Sensor lines and signal lines must be installed such that
they are spatially separated from the load and control lines (high-voltage lines). If signs of incorrect
switching behavior are detected the circuit must be put out of service until remedial action.
For intermediate clamping of compensation lines for thermocouples, no regular terminals may be
used, since this would result in generation of additional thermocouples that may falsify the
measuring results.
Connect the shield of the sensor lines and the signal lines with the signal ground as close to the unit
as possible and lay a line with a diameter of minimum 1.5 mm² from this point to the PE bus bar
along the shortest possible route.
Any inductive loads activated by the unit, such as contactors, valves, motors, transformers, etc. must
be wired separately and interferences must be prevented using device-specific suppression devices.
For type L-430, the load circuit is fused against excess current by means of an internal miniature fuse.
For 16A types the load circuit must be protected against excess current by means of a suitable
external fuse. (See Chapter Fehler! Verweisquelle konnte nicht gefunden werden., page Fehler!
Textmarke nicht definiert.)
