Toshiba LF434 - Manual (Page 28)

TOSHIBA
6 . F . 8 A 0 7 7 0
5Л Cables
Use the kind of ciibles shown in Tahle
lo
wire the converler.
Table 5.1 Cables
Name Cable type Nominal
cross-.sectional
area Overall diameter
Power cable Three-wire sheathed
cable (Note)
2
mm^ 11 to 13 mm
1/0 cable I'he number of wires for the output cable depends on Ihc
system spccificiirions. Use a shielded cable with nominal
cross-scctional area of 1.25 inrii^ and overall diameter of
n to 13 mm.
Notei Use a four-wire cable if the arresters are to be used. See Figure 5.1 below,
5.2 External Device Connections and Grounding
The terminal board connections of the LF434/LF404 flowmeter arc shown in Figure 5.1.
Proceed with wiring as described in Section 5.4, '‘Wiring Procedure.”
If power supply is specified as DC, use M as positive (+) and 1.2 as negative (-) terminals.
Instrument Panel:
ordered separately
Plown-fceler
[C1 |~1^Т рс |51 с |[ с О ы [ ni|oQ^noi| -
IV wire
5.5тзп"
or more
■; Cument output (4—20 mA dc )
- Digital Output I
; ■; r>igilai 2
: Digjiit! Input (20 to 30 V de)
*1
Cixrourided with 1 (X)Q or less
1/0 cable
R>wer cable
’ ■ \ .......... ! ground resistance.
— > Power Supply
It “"2 ^
Power Switch
*^1 To use the arresters, ground the ON 13 terminal using the wire shown in broken line.
*2 Locate an external double-pole power switch on the power line near the flowmeter and within easy
operation. Mark one the switch as the tlisconnecting device for the flow^meler.
Use an appropriate switch of the rating shown below:
Recommended sw'itch rating; Rating 25D V ac, 6A or more
Inrush current 15 Лог more
Figci re 5.1 Term in a t В lock Connection s
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