Fuji Electric ZSS-8 Series, Instruction Manual

Page: 37 / 119

INZ-TN8ZSS-E
- 27 -
When noise source is in the vicinity
Avoid installing this analyzer near an electrical ap-
paratus which produces power source noise. (Such
as high frequency furnace, electric welder, etc.) If
the analyzer must be used near such equipment, a
separate power line should be used for avoiding
noise.
In case noise may enter from a relay, solenoid
valve, etc. through power supply, connect a varistor
(e.g. ENA211 OKAYA) to the noise source as
shown in Fig. 4
－
16. If the varistor is located away
from the noise source, no effect is obtainable.
Fig. 4
－
16
CAUTION
• For power line, use the cables that have a cross-sectional area of 1.25 mm
2
or more.
• Connect the power cable to the socket with the ground slot (class D grounding). For grounding line, use
the cable that has a cross-sectional area of 2 mm
2
or more.
• For signal lines, use a shielded wire in order to suppress the influences by noise.
• For the digital contacts and the digital input lines, use cables that have a cross-sectional area of 0.12
mm
2
(AWG26) or more.
• After the AC power cable is connected, put a power terminal cover on.
• Do not install the instrument near objects which considerably disturb power waveforms. Do not share
their power supplies either. Otherwise, it may cause a display error.
• Power supply and output signal lines should be separated from each other.
• Use M4 solderless terminals for terminal connection.
• For the power line and the grounding line, use solderless terminals of the type that core wires and
shield lines are crimped separately.