Toshiba LF620 Instruction Manual page 120

(4) Remote selection of bidirectional flows multi-range with an external signal
Reverse direction
External signal
Range output No.1
Range output No.2
Reverse to Forward direction change
Output
0
-(Low cutoff x 1.25)→
Reverse direction 0 Forward
Range output
ON
No.2
From reverse range to forward range
Range 3
Range 4
L level H level
OFF ON
ON
←Low cutoff x 1.25
←Low cutoff
x 1.25
4mA
Flow rate
OFF
− 119 −
Output (%)
125
Range 1
100
Range 2
↓
↓
0
0 Forward direction
H level
ON
Forward to Reverse direction change
■
Low cutoff x 1.25→
Low cutoff
Reverse 0 Forward
Range output
ON
No.2
From forward range to reverse range
6 F 8 A 0 9 2 7
Flow rate
L level
OFF
OFF
Output
x 1.25→
4mA
0
← -(Low cutoff x 1.25)
Flow rate
OFF
4mA