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Start and stop using terminals (External operation)
5
5.2.2 Setting the frequency by switches (three-speed setting) (Pr. 4 to Pr. 6)
POINT
y Switch ON the STF (STR) signal to give a start command.
y Switch ON the RH, RM, or RL signal to give a frequency command.
Operation example Operation at high speed (60Hz)
Operation
1.
Screen at power-ON
The monitor display appears.
2.
Start
Turn ON the high-speed switch (RH).
3.
Acceleration Æ constant speed
Turn ON the start switch (STF or STR). The frequency value on the display increases in Pr. 7 Acceleration time, and " "
(60.00Hz) appears.
[RUN] indicator is lit during forward rotation operation and flickers during reverse rotation operation.
z When RM is turned ON, 30Hz is displayed. When RL is turned ON, 10Hz is displayed.
4.
Deceleration
Turn OFF the start switch (STF or STR). The frequency value on the display decreases in Pr. 8 Deceleration time, and the motor
stops rotating with " " (0.00Hz) displayed. [RUN] turns OFF.
5.
Stop
Turn OFF the high-speed switch (RH)
REMARKS
y To always select the External operation mode, set Pr. 79 Operation mode selection = "2 (External operation mode)".
y Initial values of terminals RH, RM, RL are 60Hz, 30Hz, and 10Hz. (To change, set Pr. 4, Pr. 5 and Pr. 6.)
y In the initial setting, when two or three of multi-speed settings are simultaneously selected, priority is given to the set frequency
of the lower signal.
For example, when the RH and RM signals turn ON, the RM signal (Pr. 5) has a higher priority.
y Maximum of 15-speed operation can be performed. ( Refer to Chapter 4 of the Instruction Manual (Applied).)
Inverter
Forward rotation start
Reverse rotation start
High speed
RM
STF
STR
RH
Middle speed
Low speed
SD
RL
[Connection diagram]
ON
ON
ON
Output frequency (Hz)
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
RH
RM
RL
Time