IMO iDrive Instruction Manual page 45

A08 VF base voltage set
A09 VF base frequency set
In example below: A09 = 50Hz, b04 =100%
If A08 setting is 200~240V, then output voltage for the pattern:
240
220
200
The inverter output voltage cannot exceed the input voltage.
A10 Torque Boost Gain (V/F) (%) 00.0 – 30.0%
A11 Electronic thermal overload protection
for motor (OL1) :
Set A11 = 000 and b09 to rated motor current (Amps) to give correct thermal overload protection.
A12 Advanced parameter
functions display
A12 = 000. Parameter group 'b' cannot be displayed or accessed.
A12 = 001. Enable display and access parameter group 'b'.
A08 = 240
A08 = 220
A08 = 200
50.0Hz (C17)
50.0Hz (A09)
000: Protection Enabled
001: Protection Disabled
000: Disable access to advanced parameters (b parameters)
001: Enable access to advanced parameters (b parameters)
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Chapter 4 Software index