YASKAWA Varispeed-616GII Instruction Manual page 36

(3)
The forward master speed/auxiliary switching and the reverse master speed/
auxiliary switching are not set in pairs .
(Set the forward master speed /auxiliary switching to constant 8 and the re-
verse master speed/auxiliary switching to constant 9 .)
(4) Multispeed setup is set and master speed/auxiliary switching is not set .
(Set the master speed/auxiliary switching to constant 8 and the multispeed
setup to constant 9.)
(5) Forward run /reverse run selection of setting value 18 is set to constant
8 to 10 . (Set the forward run /reverse run selection to constant 11 .)
(6) Overide of setting value 4 is set to constant 9 to 11 . (Set the override
command to constant 8 .)
A4-7-1 Description of Functions
(1)
Master speed/auxiliary switching function
In both forward and reverse operations, this contact-input signal enables
switching the master speed and auxiliary .
Open : The master speed frequency command is made the frequency command .
Close : The auxiliary frequency command is made the frequency command .
(2) The forward master speed /auxiliary switching and the reverse master
speed/auxiliary switching functions
The main speed and auxiliary can be switched separately in forward and re-
verse operations . The forward master speed/auxiliary switching function and
the reverse master speed/auxiliary switching function must be used in pairs .
Open : The master speed frequency command is made the frequency command
Close : The auxiliary frequency command is made the frequency command .
(3) Multispeed setup function .
The multispeed setup function must be used in a pair with the master speed/
auxiliary switching function . A combination of these terminals makes the fre-
quency command as shown in Table 16 .
Table 16 4-step Speed Setting Method
'Values set by control constants 27 and 28
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Master/Aux Selector Command Multi-step Speed Setting
Frequency Command
Open Open Master freq command
Closed Open Aux freq command
Open Closed
Freq command 1
for multi-step speed setting
Closed Closed
Freq command 2'
for multi-step speed setting