YASKAWA OYMC V1000, Programming Manual

Page: 89 / 408

1.3 C: Tuning
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 89
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compensation. Use the ASR output monitor U6-04 to determine if ASR is working at the
limit and make settings if necessary. If ASR is operating at the ASR limit, check the pulse
signal and the pulse input settings prior to changes in C5-05.
◆
C6: Carrier Frequency
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C6-01: Drive Duty Mode Selection
The drive offers a Heavy Duty (HD) and a Normal Duty (ND) mode. The Duty Mode must
be selected based on the load characteristics. The drive rated current, overload capability,
carrier frequency, and the Stall Prevention levels during acceleration will change depending
on the Duty Mode selection.
Heavy Duty allows overload up to 150% for 60 s. Normal Duty allows up to 120% for 60 s
but therefore has a higher drive rated current. Refer to the Specifications section in this
manual for details on the rated current.
Table 1.26 Differences between Heavy and Normal Duty
No. Parameter Name Setting Range Default
C5-05 ASR Limit 0.0 to 20.0% 5.0%
No. Parameter Name Setting Range Default
C6-01 Duty Mode Selection 0 or 1 0
Mode Heavy Duty Rating (HD) Normal Duty Rating (ND)
C6-01
0 1
Characteristics
Application
Use Heavy Duty Rating for applications
requiring a high overload tolerance with
constant load torque. Such applications
include extruders, conveyors and
cranes.
Use Normal Duty Rating for applications
in which the torque requirements drop
along with the speed. Examples include
fans or pumps where a high overload
tolerance is not required.
100 %
100 % 0 Motor Speed
Rated Load
Overload
150 %
Motor Speed 0
100 %
100 %
120 %
Rated Load
Overload