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PL-6900 Series User Manual
Installation and Wiring
• If voltage fluctuations are expected to vary be-
yond the specified range, connect a constant
voltage transformer.
For information about the specified
voltage, refer to “2-1 General
Specifications”
• Use a low-noise power supply both be-
tween the lines and between the PL and its
ground. If there is still excess noise, con-
nect an insulating transformer (noise-pre-
vention type) .
• Wire the power cords of the PL, I/O de-
vices, and power supply devices separately.
• To improve noise immunity, it is recommended
to attach a ferrite core to the power cord.
• Isolate the main circuit (high voltage, large
current) line, I/O signal lines, and power cord,
and do not bind or group them together.
• To prevent damage from lightning, connect a
lightning surge absorber.
Constant
voltage
transformer
Twisted-pair
cable
PL
FG
Insulating
transformer
Twisted-pair
cable
PL
FG
Main power
source
PL power
source T1
T2
I/O power
source
PL
I/O
device
I/O
device
Main circuit
power source
Power
device
AC 200V
Twisted-pair
cable
PL
FG
Lightning surge absorber
AC
E1
E2
• Ground the lightning surge absorber
(E1) and the PL (E2) separately.
• Select a lightning surge absorber
which will not exceed the allowable
circuit voltage, even w h e n t h e
voltage rises to the maximum.
Be sure any constant or insulating
transformer used has a capacity of
200VA or more.
AC100V
PL power
source
I/O power
source
PL
I/O
device
Main power
source
2
Power Supply Cautions
When connecting the PL unit’s AC power terminals, please be aware of the following:
Содержание Pro-Face PL-6900 Series
Страница 17: ...xvi Preface PL 6900 Series User Manual MEMO ...
Страница 23: ...1 6 PL 6900 Series User Manual Overview MEMO ...
Страница 51: ...3 14 PL 6900 Series User Manual Installing Optional Units and Expansion Boards MEMO ...
Страница 61: ...4 10 PL 6900 Series User Manual Installation and Wiring MEMO ...
Страница 81: ...6 4 PL 6900 Series User Manual OS Setup MEMO ...
Страница 91: ...7 10 PL 6900 Series User Manual Maintenance and Inspection MEMO ...
Страница 101: ...App 10 PL 6900 Series User Manual Appendix MEMO ...
Страница 105: ...Index IV PL 6900 Series User Manual ...