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For 3-Wire control, constant n
n 0
0 6
6
must be set to “ 0 ” (FWD/REV).
Therefore, a maximum of 4 preset
speeds can be used, if constant n
n 0
0 7
7
is set to “ 4 ” (Multi-step Speed Ref 1)
and constant n
n 0
0 8
8 is set to “ 5 ”
(Multi-step Speed Ref 2).
NOTE: Any values set into constants
n
n 1
1 5
5 - n
n 1
1 8
8 cannot be used for multi-
step speed operation when the drive
is programmed and wired for 3-Wire
control.
Example: 8-step Speed Selection in 2-Wire Control
n02 = 1 (Operation mode selection)
n11 = 25.0 (Hz)
n12 = 30.0 (Hz)
n13 = 35.0 (Hz)
n14 = 40.0 (Hz)
n15 = 45.0 (Hz)
n16 = 50.0 (Hz)
n17 = 55.0 (Hz)
n18 = 60.0 (Hz)
n06 = 4 (Multi-function contact
input terminal)
n07 = 5 (Multi-function contact
input terminal)
n08 = 6 (Multi-function contact
input terminal)
n43 = 1 (Terminal FR function
selection)
34
SF
SR
S1
S2
S3
SC
FS
FR
FWD RUN/STOP
REV RUN/STOP
FAULT RESET
MULTI-STEP
SPEED REF. 1
MULTI-STEP
SPEED REF. 2
MULTI-STEP
SPEED REF. 3
Note: When n
n 0
0 2
2 is set to “ 2 ”,
“ 3 ”, “ 4 ” or “ 5 ”, frequency
reference 1 (n
n 1
1 1
1 ) becomes
disabled. To output a reference
from control circuit terminal FR,
set n
n 4
4 3
3 to “ 0 ” (see page 46).
Multi-step (4 speed presets) in 3-Wire Control
Constant
External Terminal
and Name
S3
S2
n11 Frequency Ref 1
0
0
n12 Frequency Ref 2
0
1
n13 Frequency Ref 3
1
0
n14 Frequency Ref 4
1
1
1 = Closed (ref terminal SC)
0 = Open (ref terminal SC)
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