89
Make a start and stop with terminals
4.5.2
Use switches to give a start command and a frequency command
(multi-speed setting) (Pr. 4 to Pr. 6)
[Connection diagram]
POINT
· Start command by terminal STF (STR)-SD
· Frequency command by terminal RH, RM, RL and STR-SD
· [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 chapter 4 of
the instruction manual (applied).)
Changing example Set "50Hz" in
Pr. 4 Multi-speed setting (high speed)
and turn on terminal RH and STF (STR)-SD to
operate.
Three-phase
AC power supply
Motor
Inverter
R/L1
S/L2
T/L3
U
V
W
High speed
Middle speed
Low speed
RH
RM
RL
Forward
rotation start
Reverse
rotation start
STF
STR
SD
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
Output frequency (Hz)
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
Speed 4
Speed 5
Speed 6
Speed 7
Time
RH
RM
RL
ON
Display
Operation
1.
Power on
→
operation mode check
For the initial setting, the inverter operates
in external operation mode [EXT] when
powering on. Check that the operation
command indication is [EXT].
If not displayed, press to change to the
external [EXT] operation mode. If the operation
mode still does not change, set
Pr. 79
to change
to external operation mode.
2.
Change the
Pr. 4
setting to " ".
ON
ON
Stop
OFF
Forward rotation
Reverse rotation
High speed
Middle speed
Low speed
3.
Turn on the high speed switch (RH).
5.
Stop
Turn the start switch (STF or STR) off.
The motor stops according to
Pr. 8
Deceleration time
.
• 30Hz appears when RM is on and 10Hz
appears when RL is on.
Forward
rotation
Reverse
rotation
4.
Turn the start switch (STF or STR) on.
50Hz appears.
.
(Refer to page 52 for change of the setting.)
Summary of Contents for FR-A741-11K
Page 7: ...MEMO ...
Page 216: ...209 MEMO ...
