Decelerating Stall Prevention Selection; Accelerating Stall Prevention Operation Level; Operating Stall Prevention Operation Level - Omron SYSDRIVE 3G3HV SERIES User Manual

Preparing for Operation
• The parameters n067, n068, and n069 are used for torque compensation.
• It is usually not necessary to change the default-set values.
• Set n067 to a larger value if the wiring distance between the Inverter and motor is long and a smaller
value if the motor vibrates.
• Set with n068 the coil resistance of the motor and n069 the core loss of the motor if the coil resistance
and core loss are known. The parameters n068 and n069 will probably make the torque boost function
more effective.
n070

Decelerating Stall Prevention Selection

Setting range 0, 1
• Select with n070 a method to process the overvoltage error of the Inverter decelerating the motor.
Set Values
Set value
0 Inhibits deceleration stall prevention from functioning.
1 Permits deceleration stall prevention to function.
Note 1. Be sure to set n070 to 0 if the Braking Resistor Unit is connected to the Inverter, otherwise the
Braking Resistor Unit will not work.
Note 2. The Inverter will automatically extend time to decelerate the motor so that no overvoltage er-
ror will result if n070 is set to 1.
Operation Example
Output
frequency
n071

Accelerating Stall Prevention Operation Level

Setting range 30 to 200
n072

Operating Stall Prevention Operation Level

Setting range 30 to 200
Note The default setting for 18.5-kW or higher Inverters is 120.
3-86
Unit ---
Description
Deceleration time
(Set value)
Unit % (Rated output
current ratio)
Unit % (Rated output
current ratio)
Default setting
Deceleration time is controlled
so that no overvoltage error will
result.
Default setting
Default setting
Chapter 3
1
170 (See note.)
160 (See note.)