Toshiba Tosvert VF-AS1 - Manual (Page 124)

E6581301
F-12
6
2) Automatic switching by means of switching frequencies (H=)
A
B
Command selected
with HOQF
Command selected
with H
Operation frequency
command
A: If the frequency set with HOQF is higher than that set with H Priority is given to the
command set with HOQF.
B: If the frequency set with HOQF is equal to or lower than that set with H Priority is given to the
command set with H.
H
Priority is given to
the command set
with H. Priority is given to
the command set
with HOQF.
H
HOQF
Frequency setting signal
[ Parameter setting]
Title Function Adjustment range Default setting
HOQF Frequency setting mode selection 1
 :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
 :Communications option input
 :Optional AI1 (differential current input)
 :Optional AI2 (voltage/current input)
 :Up/Down frequency
 :Optional RP pulse input
 :Optional high-speed pulse input
 :Optional binary/BCD input

H Frequency priority selection
 :HOQF/H terminal switching
(input terminal function selection ,

)
 :HOQF/H frequency switching
(switching with H)

H Frequency setting mode selection 2 Same as HOQF (~) 
H
Speed command priority switching
frequency
 ~HJ[Hz]