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LF470/LF622
5
Grounding with 100
or less
ground resistance
Instrument panel
:
O
rdered separately
I/O
cable
Grounding with 100
or less
ground resistance
wire 5.5mm
2
or more
Current output (4
20mAdc)
or
PROFIBUS
Power supply
Power cable
Digital input
(20 30Vdc)
Signal common for DI and DO
Digital output 1
Digital output 2
Grounding with 100
or less
ground resistance
or Modbus
Signal cable
(2-wire shielded hard-rubber sheathed cable)
Connected detector
Excitation cable
(3-wire shielded hard-rubber cable)
Thick walled steel conduit
Power switch
(External double-pole power switch)
Symbol
Description Cable
L1 ( )
L2 ( )
Power supply Power cable
GND Ground (for arrester)
FG Frame ground
DI Digital Input (20 30Vdc)
DO1 Digital Output 1
DO2 Digital Output 2
COM Signal Common for DI, DO1, DO2
I/O cable
Current Output (4 20mAdc)
or PROFIBUS
Shielded cable for
PROFIBUS-PA
X
Y Excitation Output
E
Excitation cable
A
B Signal Input
G
Signal cable
Note: Symbol of the terminal is changed as follows for Modbus.
DO2 T+, DI T-, COM T
Symbol Description Cable
T+ Modbus(+)
T- Modbus(-)
TG Modbus(GND)
Twist-pair polyethylene
insulated vinyl sheath cable
(JKEV,AWG24(0.2mm
2
))
Figure 6. Separate type LF470/LF622 flowmeters wiring Diagram
Separate type LF470/LF622 flowmeter