Traverse Function - Mitsubishi Electric FR-A800 Series Instruction Manual

• When the average current is larger than "inverter rated current × Pr.271 setting (%)" and smaller than "inverter rated
current × Pr.272 setting (%)", linear compensation is performed as shown below.
NOTE
• When the current averaging range includes the constant-output range, the output current may become large in the constant-
output range.
• When the average current value in the current averaging range is small, deceleration time becomes longer as the output
frequency increases.
• The automatic restart after instantaneous power failure function, fast-response current limit operation, fast-response current
limit operation, shortest acceleration/deceleration, and optimum acceleration/deceleration are invalid.
• Changing the terminal assignment with Pr.178 to Pr.189 (Input terminal function selection) may affect other functions. Set
parameters after confirming the function of each terminal.
• Under the following operating conditions, the load torque high-speed frequency function is invalid:
PU operation (Pr.79), PU + External operation (Pr.79), JOG operation, PID control function operation (Pr.128), remote setting
function operation (Pr.59), orientation control function operation, multi-speed setting (RH, RM, and RL signals), torque control,
position control.
• When the average current during acceleration is too small, it may be judged as regeneration, and the maximum frequency may
become the setting of Pr.5.
• The output frequency may change due to the load, so do not get unnecessarily close to the motor or machine.
Parameters referred to
Pr.4 to Pr.6, Pr.24 to Pr.27 (multi-speed
Pr.57 Restart coasting
Pr.59 Remote function
Pr.79 Operation mode
Pr.128 PID action selectionpage 601
Pr.178 to Pr.189 (Input terminal function

5.14.7 Traverse function

The traverse operation, which oscillates the frequency at a constant cycle, is available.
Pr.
592 Traverse function
A300 selection
593 Maximum amplitude
A301 amount
Amplitude
594
compensation amount
A302
during deceleration
Amplitude
595
compensation amount
A303
during acceleration
596 Amplitude acceleration
A304 time
597 Amplitude deceleration
A305 time
• Setting Pr.592 Traverse function selection = "1 or 2" enables the traverse function.
582
5. PARAMETERS
5.14 (A) Application parameters
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Pr.4
(60Hz/50Hz)
Pr.5
(30Hz)
setting)page 411
timepage 628, page 635
selectionpage 377
selectionpage 389
selection)page 521
Name Initial value
0
10%
10%
10%
5 s
5 s
search engine
Pr.271 Pr.272 Average current
(50%) (100%)
Value in parenthesis is initial value.
Setting range
0 Traverse function invalid
Traverse function valid only in External operation
1
mode
Traverse function valid regardless of the operation
2
mode
0 to 25% Level of amplitude during traverse operation
Compensation amount during amplitude inversion
0 to 50%
(from acceleration to deceleration)
Compensation amount during amplitude inversion
0 to 50%
(from deceleration to acceleration)
Time period of acceleration during traverse
0.1 to 3600 s
operation
Time period of deceleration during traverse
0.1 to 3600 s
operation
Description