YOKOGAWA FA-M3V e-RT3 Plus, Руководство по оборудованию

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A3-48
IM 34M06C11-01E
(4) Precautions in the withstand voltage test
CAUTION
Figure A3.40 shows the insulation block diagram of FA-M3.
- FA-M3 provides protection against electric shock from each hazardous voltage by both
basic insulation and protective earth.
- Apply the appropriate test voltage to the equipment incorporating the FA-M3 by
referring to Fig.A3.40. Don't apply the excessive test voltage. It causes the trouble.
- In the FA-M3 module which doesn't handle hazardous voltage, the insulations between
input-output terminals and internal circuits are functional insulations or non-insulations.
In terms of safety standards, all of these insulations are treated as non-insulation.
Therefore, in the withstand voltage test, don't apply the test voltage between these
blocks.
F3PUxx F3YCxx
Basic
Insulation
Basic
Insulation
1000Vrms
1500Vrms
1500Vrms
Other I/O
modules
(
SG
)
*2
Basic
Insulation
*3 *3
*3
FA030906.V SD
● ●
● ●
FAIL1
COM
FAIL2
FG
LG
N
(-)
L (+)
In
te
rn
al c
irc
uit
*1
1minute 1minute
1minute
*1: Protective earth for the AC power supply.
Functional earth for the DC power supply.
*2: L/N is for the AC power supply.
(+)/(-) is for the DC power supply.
*3: The numerical values show the withstanding voltages.
Figure A3.40 Insulation block diagram of FA-M3
(5) Precautions about analog input terminal
WARNING
Don’t use analog input terminals of the FA-M3 for measurement on Mains Circuit, since
it has no measurement category.
Maximum transient overvoltage that can be applied to the analog input terminal is
1,000V.