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Start and stop using terminals (External
operation)
4.5.2 Setting the frequency by switches (three-speed setting) (Pr. 4 to Pr. 6)
[Connection diagram]
POINT
· Switch ON the STF (STR) signal to give a start command.
· Switch ON the RH, RM, or RL signal to give a frequency command.
· [EXT] must be lit. (When [PU] is lit, switch it to [EXT] with .)
· The initial values of the terminals RH, RM and RL are 60Hz, 30Hz, and 10Hz. (Use Pr. 4, Pr. 5 and Pr. 6 to change.)
· Operation at 7-speed can be performed by turning two (or three) terminals simultaneously. (Refer to Chapter 4 of
the Instruction Manual (Applied).)
Changing example Operation at high speed (60Hz).
Forward rotation start
RM
STF
STR
RH
SD
RL
Inverter
Reverse rotation start
High speed
Middle speed
Low speed
ON
ON
ON
Output frequency (Hz)
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
RH
RM
RL
ON
DisplayOperation
3.
Acceleration → constant speed
T
urn ON the start switch (STF or STR). The
frequency on the display increases in Pr. 7
Acceleration time, and " " (60.00Hz) appears.
[FWD] indicator is lit during forward rotation, and
[REV] indicator is lit during reverse rotation.
When RM is turned ON, 30Hz is displayed.
When RL is turned ON, 10Hz is displayed.
2. Turn ON the high-speed switch (RH).
CAUTION
When both of STF and STR signals are turned
ON, the motor cannot start.
If both are turned ON while the motor is
running, the motor decelerates to a stop.
4. Turn OFF the start switch (STF or STR).
The frequency on the display decreases in Pr. 8
Deceleration time, and the motor stops rotating
with " " (0.00Hz) displayed.
[FWD] indicator or [REV] indicator turns OFF.
5. Stop
Turn OFF the high-speed switch (RH).
1. Screen at power-ON
The monitor display appears.
ON
Forward rotation
Reverse rotation
Forward rotation
Reverse rotation
ON
OFF
OFF
High speed
Stop
Middle speed
Low speed
High speed
Middle speed
Low speed