Lf622 Type - Toshiba LF620 Instruction Manual

5.2.2 LF622 Type

The terminal board connections of separate type converter LF622 are shown in Figure 5.1. Proceed with
wiring as described in Section 5.4, "Wiring Procedure."
LF622
Instrument panel : Ordered separately
Grounding with 100Ω or less
ground resistance
Power switch
(External double-pole power switch)
Power supply
Current output (4〜20mAdc)
or PROFIBUS
Digital input (20〜30Vdc)
or Modbus
Digital output 2
Signal common for DI and DO
Digital output 1
Grounding with 100Ω or less
ground resistance
NOTE:
To avoid 2-point grounding, ground
the shield of the output cable basically
at the receiving side.
I/O cable
(CVV-S)
Figure 5.2 External Wiring Schematic Diagram
− 23 −
Power cable
(CVV)
NOTE:
• When 3-core power cable is used, do not ground from
the external grounding terminal. Perform grounding at
the receiving side only.
• Only when a 2-core power cable is used, perform
grounding from the external grounding terminal.
6 F 8 A 0 9 2 7
Ⅳ wire 5.5mm
NOTE
or more
Grounding with 100Ω or
less ground resistance
Thick conduit tube
Signal cable
(2-core shielded
cabtypre cable)
Excitation cable
(3-core cabtypre
cable)
Detector
2