Toshiba VF-nC1 User Manual
Page 63
E6581090
E-11
5
■
Motor 150%-overload time limit : H
Using the H parameter (motor 150%-overload withstanding time), you can set the time
(between 10 and 800 seconds) elapsed before an overload trip occurs (QN) when the motor is
operated under a load of 150%.
Title
Function
Adjustment range
Default setting
H
Motor 150%-overload time limit 10～800 (sec)
300
5.11
Preset speed operation (speeds in 15 steps)
UT ～ UT : Preset speed operation frequencies 1~7 (Hz)
H
～ H : Preset speed operation frequencies 8~15
[Setting method]
1) Run/stop
The starting and stopping control is done from the terminal board.
Title
Function
Adjustment range
Default setting
Setting
EOQF
Command mode
selection
0: Terminal board
1: Operation panel
1
0
Note: If speed commands (analog signal or digital input) are switched in line with preset speed
operations, select the terminal board using the frequency setting mode selection HOQF.
⇒ See 3) or 5.1
2) Preset speed frequency setting
Set the speed (frequency) of the number of steps necessary.
Setting from speed 1 to speed 7
Title
Function
Adjustment range
Default setting
UT～UT
Preset speed operation
frequencies 1~7
NN～WN
(Hz)
0.0
Setting from speed 8 to speed 15
Title
Function
Adjustment range
Default setting
H～H Preset speed operation
frequencies 8~15
NN～WN
(Hz)
0.0
■
Example of a frequency setting for forward 15-speed operation
Examples of preset speed contact input signals: When the input terminals are placed in sink logic
mode
○
: ON － : OFF (Speed commands other than preset speed commands are valid when all are OFF)
Preset speed
Terminal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
S1-CC
○
－
○
－
○
－
○
－
○
－
○
－
○
－
○
S2-CC
－
○
○
－
－
○
○
－
－
○
○
－
－
○
○
VI/S3-CC
－
－
－
○
○
○
○
－
－
－
－
○
○
○
○
R-CC
－
－
－
－
－
－
－
○
○
○
○
○
○
○
○
☆
Terminal functions are as follows.
Terminal S1 ....................
Input terminal function selection 3 (S1) H=6 (SS1)
Terminal S2 ....................
Input terminal function selection 4 (S2) H=7 (SS2)
H
=2 (Contact input)
Terminal VI/S3................
Terminal VI and input terminal function
selection 5 (VI/S3)
H
=8 (SS3)
Terminal R......................
Input terminal function selection 2 (R)
H
=9 (SS4)
• Function
A maximum of 15 speed steps can be selected just by switching an external contact signal.
Multi-speed frequencies can be programmed anywhere from the lower limit frequency NN
to the upper limit frequency WN.
S1
S2
VI/S3
R
CC