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・Separate type LF410/LF622 and LF414/LF622F flowmeters
Instrument panel : Ordered separately
Grounding with 100Ω or less
ground resistance
Power switch
(External double-pole power switch)
Current output (4～20mAdc)
or PROFIBUS
or Modbus
Digital output 2
Signal common for DI and DO
Digital output 1
Grounding with 100Ω or less
ground resistance
Figure 11. Separate type LF410/LF622 and LF414/LF622F flowmeters wiring Diagram
Table 2. LF620, LF620F, LF622 and LF622F Converters Signal Table
Power supply
Digital input
(20～30Vdc)
I/O cable
Symbol
Description
L1 (＋)
Power supply
L2 (－)
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
＋
Current Output (4～20mAdc)
or PROFIBUS
－
X
Y
Excitation Output
E
A
B
Signal Input
G
T+
Modbus(+)
T-
Modbus(-)
TG
Modbus(GND)
Note: Symbol of the terminal is changed as follows for Modbus.
DO2 → → → → T+, DI → → → → T-, COM → → → → TG
Power cable
Connected detector
Shielded cable for
PROFIBUS-PA
Excitation cable
(for LF622,LF622F only)
(for LF622,LF622F only)
Twisted-pair polyethylene
insulated vinyl sheath cable
(JKEV,AWG24(0.2mm
2
Ⅳ wire 5.5mm
or more
Grounding with 100Ω or less
ground resistance
Thick walled steel conduit
Signal cable
(2-wire shielded hard-rubber sheathed cable)
Excitation cable
(3-wire shielded hard-rubber cable)
Cable
Power cable
I/O cable
Signal cable
2
))
EJL-136F
11
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