Toshiba Tosvert VF-AS1 Instruction Manual page 151

1) External connection
R
S
T
(1) Process value
DC:0~10V
RR/S4
CCA
VI/II
2) Types of PID control interface
Process value (frequency) and feedback value can be combined as follows for the PID control of the VF-AS1.
(1)Process value(frequency setting)
Frequency setting mode selection ／
:VI/II (voltage/current input)
:RR/S4 (potentiometer/voltage input)
:RX (voltage input)
:Operation panel input enabled (including LED/LCD
option input)
:2-wire RS485 communication input
:4-wire RS485 communication input
:Communication option input
:Optional AI1 (differential current input)
:Optional AI2 (voltage/current input)
:UP/DOWN frequency
:Optional RP pulse input
:Optional high-speed pulse input
Note 1: About the setting of and: Do not select the same terminal that is used feedback
terminal.
Note 2: The voltage/current changeover of the analog input VI/II and the option AI1 can be set by the parameter
 or 
U
V
W
(2) Feedback value DC:4~20mA
(2) Feedback value
PID control feedback control signal selection

:Deviation input (no feedback input)
:VI/II (voltage/current input)
:RR/S4 (potentiometer/voltage input)
:RX (voltage input)
:Optional AI1 (differential current input)
:Optional AI2 (voltage/current input)
: PG feedback option
， 0:Voltage input (DC:0~10V)
1:current input (DC:4~20mA)
F-35
E6581442
M
Pressure
transmitter
P
6