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DESIRABLE INDEPENDENT GROUNDING
Common grounds:
NEVER GROUND EQUIPMENT AS SHOWN IN THE LEFT SIDE FIGURE
(FORBADE):
1.3.3 Environmental conditions
Generally, the machine will be installed on the following conditions. However,
these may change over a period of time or in response to seasonal changes.
1) Supply voltage
2) Source frequency
3) Ambient temperature
4) Relative humidity
Temperature changes should not cause condensation.
5) Atmosphere
and salt
6) It should be avoided to expose the machine to direct sunlight or heat rays
which can change the environmental temperature.
7) Avoid exposing the NC machine to abnormal vibration.
If it is difficult to observe meet these conditions, contact us immediately.
Earth resistance: Less than 100 ohms
Resistance to ground = 100 the number
of devices connected to the grounding
(Ω)
(WRONG!)
: 90% to 110% of nominal supply voltage
: ±2hz of nominal frequency
: 0℃ to 45℃ (32℉ to 113℉ )
: Less than 80%
: Free from excessive dust, acid fumes corrosive gases
Page 1-7
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