LS ELECTRIC SV-iS7 Series, User Manual

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Basic Functions
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7.14 Torque Boost
7.14.1 Manual Torque Boost
Manual torque boost enables users to adjust the output voltage during low-speed operation or
motor start. You can increase the low-speed torque or improve motor-starting properties by
manually increasing the output voltage. Configure the manual torque boost while running
loads that require a high starting torque, such as lift-type loads.
Group Code Name LCD Display Parameter Setting Setting Range Unit
DRV
15 Torque boost options
Torque
Boost
0 Manual 0 – 1 -
16 Forward torque boost Fwd Boost* 2.0 0.0 – 15.0 %
17 Reverse torque boost Rev Boost* 2.0 0.0 – 15.0 %
* For 90 kW – 160 kW model types, the default setting value is 1.0 [%].
Manual Torque Boost Setting Details
Code Description
DRV-16 Fwd Boost Sets the torque boost for forward operation.
DRV-17 Rev Boost Sets the torque boost for reverse operation.
Output Voltage = Output voltage affected by DRV-16,17 Manual torque boost parameter
= V/F v Boost
ed
voltage
=
(𝑀𝑎𝑥𝑖𝑚𝑢𝑚 𝑣𝑜𝑙𝑡𝑎𝑔𝑒 – 𝐵𝑜𝑜𝑠𝑡𝑒𝑑 𝑣𝑜𝑙𝑡𝑎𝑔𝑒) ×
𝐶𝑢𝑟𝑟𝑒𝑛𝑡 𝑓𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦
𝐵𝑎𝑠𝑒 𝑓𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦
+ 𝐵𝑜𝑜𝑠𝑡𝑒𝑑 𝑣𝑜𝑙𝑡𝑎𝑔𝑒