User manual - METER SWE-N55L
Figure 4.1. Distances between pinholes
4.3.
CONNECTION METHOD
Caution
- Installation should be conducted by qualified personnel. During installation all
available safety requirements should be considered. The fitter is responsible for
executing the installation according to this manual, local safety and EMC
regulations.
- Wiring must meet appropriate standards and local regulations and laws.
- Tighten the clamping screws. The recommended tightening torque is 0.5 Nm.
Loose screws can cause fire or defective operation. Over tightening can lead to
damaging the connections inside the units and breaking the thread.
- The unit is equipped with housing, cover and gland or M12 connector, protecting
against water intrusion. Pay special attention to their correct tightening or
clamping. In the case of any doubt consider using additional preventive
measures (covers, roofing, seals, etc.). Carelessly executed assembly can
increase the risk of electric shock.
Due to possible significant interference in industrial installations appropriate measures
assuring correct operation of the unit must be applied. To avoid the unit of improper
indications keep recommendations listed below.
–
Avoid common (parallel) leading of signal cables and transmission cables together with
power supply cables and cables controlling induction loads (e.g. contactors). Such cables
should cross at a right angle.
–
Contactor coils and induction loads should be equipped with anti-interference protection
systems, e.g. RC-type.
–
In the case of magnetically induced interference the use of twisted couples of signal
cables (so-called “spirals”) is recommended.
6
!
34 mm
46
m
m
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