Shanghai STEP Electric Corporation
Appendix A EMC Installation Guide
A1.3 Basic Measures for Noise Suppression
See attached Table A1.1 for basic noise suppression measures.
Attached Table A1.1 Basic Noise Suppression Measures.
Due to electromagnetic induction and
electrostatic induction where signal
lines are arranged in duplex with
power lines or arranged in bundle,
noises occurs and transmits in signal
line and additionally results in
malfunction of peripherals
1. Avoid arranging signal line and power line in
duplex and in bundle.
2. keep susceptible peripherals far away from
elevator integrated drive controller;
3. keep susceptible signal line far away from the
input/output cable of elevator integrated drive
controller;
4. Use shielded lines as signal line and power line. It
is better to put them in metal hoses (hose-to-hose
spacing shall not be less than 20cm )
Where closed loop circuit is formed
among peripherals and elevator
integrated drive controller, the
grounding leakage current of
integrated drive controller may cause
malfunction of peripherals.
If that time the peripherals are not grounded, the
malfunction due to leakage current may be avoided.
When peripherals sharing a power
supply system with elevator integrated
drive controller, the noise of elevator
integrated drive controller may transit
along the supply line and resultantly
cause malfunction of the related
peripherals.
Connect a noise filter at the input side of elevator
integrated drive controller; or isolate the peripheral
from noise by isolating transformer/supply filter.
To Next Page
Loading...
Need help?
General
