Setting The Frequency By Switches (Three-Speed Setting) (Pr. 4 To Pr. 6) - Mitsubishi Electric F700 Instruction Manual

3.6.2

Setting the frequency by switches (three-speed setting) (Pr. 4 to Pr. 6)

POINT
· Start command by terminal STF (STR)
· Frequency command by terminal RH, RM, RL and STR
· [EXT] must be lit. (When [PU] is lit, switch it to [EXT] with
· The initial values of the terminals RH, RM, 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 the chapter 4 of
the Instruction Manual (applied).)
[Connection diagram]
Forward rotation start
Reverse rotation start
High speed
Middle speed
Low speed
Changing example Operation at high speed (60Hz).
Operation
1.
Screen at powering on
The monitor display appears.
2.
Turn ON the high-speed switch (RH).
3.
Acceleration → constant speed
Turn ON the start switch (STF or STR). The
frequency on the indication increases by the Pr. 7
Acceleration time, and "
[FWD] indication is lit during forward rotation, and
[REV] indication is lit during reverse rotation.
When RM is turned ON, 30Hz is displayed.
When RL is turned ON, 10Hz is displayed.
CAUTION
When both of STF and STR signals are turned
ON, the inverter cannot start.
If both are turned ON while the inverter is
running, the inverter decelerates to a stop.
4.
Turn OFF the start switch (STF or STR).
The frequency on the indication decreases by the
Pr. 8 Deceleration time, and the motor stops
rotating with " " (0.00Hz) displayed on the
indication.
[FWD] indication or [REV] indication turns OFF.
5.
Stop
Turn OFF the high-speed switch (RH).
Inverter
STF
STR
RH
RM
RL
SD
ON
High speed
ON
Forward rotation
ON
" (60.00Hz) appears.
Forward rotation
OFF
High speed
OFF
Start and stop using terminals (External
.)
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
ON
RH
ON
RM
ON
RL
Display
Middle speed
Low speed
Reverse rotation
Reverse rotation
Middle speed
Low speed
operation)
Stop
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