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Input Terminals
1
INSTALLATION AND WIRING
1.8.2 External frequency selection (RH, RM, RL)
Multi-Speed Operation Connection Example
Up to three speeds may be selected for an
external command start according to the
combination of connecting the multi-speed select
terminals RH, RM and RL-SD, and multi-speed
operation can be performed as shown on the
right by shorting the start signal terminal STF
(STR)-SD.
Speeds (frequencies) may be specified as
desired as listed below using Pr. 4 to Pr. 6.
Multi-Speed Setting
Speed
Terminal Input
Parameter
Set Frequency
Range
Reference
Page
RH-SD RM-SD RL-SD
Speed 1
(high speed)
ON OFF OFF Pr.4
0 to 120Hz
59
Speed 2
(middle
OFF
ON OFF Pr.5
0 to 120Hz
Speed 3
(low speed)
OFF OFF
ON Pr.6
0 to 120Hz
CAUTION
For three-speed setting, selection of two or more speeds sets the frequency of the lower
speed signal.
ON
RM
ON
RL
RH
ON
S
TF(STR)
ON
Output frequency (Hz)
Speed 1
(high speed)
Speed 2
(middle speed)
Speed 3
(low speed)
Time
R
S
T
U
V
W
STF
RH
RM
RL
SD
IM
STR
Power
supply
Forward
rotation
Reverse
rotation
M
ulti-speed
s
election
Inverter
Motor