Toshiba TOSVERT VF-MB1 User manual

E6581750
TOSVERT VF-MB1
Traverse control Instruction Manual
～For textile machines～
© Toshiba Schneider Inverter Corporation 2010
All rights reserved.
The technical information in this manual is provided to explain the principal
functions and applications of the product, but not to grant you a license to
use the intellectual property or any other property of Toshiba Schneider
Inverter Corporation or a third party.

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－ CONTENTS －
1. Introduction ............................................................................................................................ 2
2. Parameters for setting the traverse function.......................................................................... 2
3. Caution about the use of the traverse control........................................................................ 3

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1．Introduction
The VF-MB1 has a traverse function useful especially for textile machines.
The manual explains about the traverse function.
Please read this instruction manual carefully along with the VF-MB1 instruction manual.
2．Parameters for setting the
traverse function
The parameters in Table 1 are used for traverse operation shown in Figure 1.
Table 1: Traverse function setting parameters
Title Function Adjustment range Default setting
H Traverse selection 0:Disabled
1:Enabled (Note)
0
H Traverse acceleration time 0.1~120.0 sec. 25.0 sec.
H Traverse deceleration time 0.1~120.0 sec. 25.0 sec.
H Traverse step 0.0~25.0% 10.0%
H Traverse jump step 0.0~50.0% 10.0%
Note: To perform traverse operation, you need to assign the traverse permission
signal 134 (135 [inverse]) to an input terminal.
The settings of the above parameters (H to H) take effect once
every half cycle of traverse operation.
Fig. 1: Traverse operation
During operation
Reference
frequency
Peak jump frequency
Peak jump frequency
Traverse frequency
Traverse frequency
Output frequency (Hz)
Time (sec.)
H H H
RUN command
ON
Traverse permission
Peak jump frequency (Hz) = Traverse frequency (Hz) × H (%)
Traverse frequency (Hz) = Reference frequency (Hz) × H (%)

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3．Caution about the use of the
traverse control
Note the following information when you use the traverse function.
■ Caution about the use of a potentiometer
If an external potentiometer (analog input) is used to set the reference frequency, an error of analog input
may occur. If such an error becomes a problem, the operation panel or the preset speed operation
function should be used instead. You can check the reference frequency by the status monitor function
(operation frequency command).
■ Suspension of traverse operation
Traverse operation does not work in the acceleration/deceleration period before traverse starting.
■ Speed reach detection band (H)
(Output terminal function No. 6 and 7 (acceleration/deceleration completed))
On completion of acceleration, an acceleration/deceleration completion signal is issued in relation to the
traverse reference frequency.
If a traverse permission signal is OFF during traverse operation, the acceleration/deceleration completion
signal is effective to the output frequency. The signal is OFF in the condition that the output frequency is
the outside of the frequency range set by H (speed reach detection band).. (See Fig. 2)
Furthermore, the setting of H determines also the traverse operation start point. High frequency
setting of H, enables to accelerate the machine, while continuing traverse operation. Note that the
traverse frequency and the peak jump frequency before the output frequency reaches to the reference
frequency are different from those during normal operation, and they vary with the output frequency during
acceleration. (See Fig.3)
■ Set frequency attainment signal,H and H
(Output terminal function No. 8 and 9 (Set frequency attainment))
The set frequency attainment signal set with H (Speed reach setting frequency) and H (Speed
reach detection band) operates on output frequency, including traverse operation frequency.
Traverse
reference
frequency
Output frequency (Hz)
Traverse
permission
ON
A
cceleration
/deceleration
completion signal
Time (sec.)
ON
*H=0
Traverse
reference
frequency
Output frequency (Hz)
Traverse
permission
ON
A
cceleration
/deceleration
completion signal
Time (sec.)
H
Fig. 2: Acceleration/deceleration completed
(f102=0)
Fig. 3: Acceleration/deceleration completed
with f102 setting.

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■ Relationship between traverse reference frequency and output frequency limit
The relationship between the traverse reference frequency and the output frequency limit is described.
The output signals of lower limit frequency, the upper limit frequency and the low-speed detection during
traverse operation are effective to the traverse reference frequency.
Traverse reference frequency : Between NN (lower limit frequency) and WN (upper limit frequency)
or HJ (maximum frequency), whichever is lower.
Output frequency : Frequency between H (Starting frequency setting) and WN (upper
limit frequency) or HJ (maximum frequency), whichever is lower.
■ Setting parameters of the control terminal
Set the following parameter to carry out traverse operation.
1. Set to 1 (traverse operation: Enabled).
2. Assign the function No. 134 / 135 [inverse] (traverse permission signal) to an input terminal.
When the terminal is turned on, traverse operation starts.
If you don’t use external input signal, set H (always active function selection 1) to 134.
Input terminal selection parameter; f111 to f116,f151 to f156
Example: Assign the traverse permission signal to the S3 terminal
Title Function Adjustment range Example of setting
H Input terminal selection 6 (S3) ~ 
(Traverse permission signal)
Note: If the traverse function is turned off during traverse operation using a parameter or by the signal
from the control terminal, the operation mode changes from traverse operation to constant speed
operation according to the acceleration/deceleration time setting (see Fig. 4).
Fig. 4 Timing when the traverse function is off
During operation
Rreference
frequency
Output frequency (Hz)
Time (sec.)
RUN command
ON
Traverse permission
(S3-CC)
OFF ON

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The traverse operation signal can be sent from inverter to external devices.
Assign the function No. 124 / 125 [inverse] (traverse in progress) and 126 / 127 [inverse] (traverse
deceleration in progress) to the output terminals.
Output terminal selection parameter: f130 to f138
Example: Output the raverse in progress signal from the RY-RC terminal.
Output the traverse deceleration in progress signal from the OUT terminal.
Title Function Adjustment range Example of setting
H Output terminal selection 1A
(RY-RC) ~  (Traverse in progress)
H Output terminal selection 2A
(OUT) ~

(Traverse deceleration
in progress)
Fig. 5 Traverse output signals
Traverse deceleration in progress
(OUT-NO)
During operation
Reference
frequency
Output frequency (Hz)
Time (sec.)
Traverse in progress
(RY-RC)
ON OFF