Preparing for Operation
Chapter 4
Electronic Thermal Reference Current
n31
Setting range 0.0 to
Factory setting See note 2
(see note 1) (A)
Unit of setting 0.1 (A)
• This constant is used to set an electronic thermal reference value to protect the motor
from overheating.
Set the rated motor amperage in this constant.
• If 0.0 is set in this constant, “no thermal protection” is assumed, so motor overload will
not be detected.
• The setting range and factory setting for this constant are as follows:
Note 1. This can be set to a maximum of 120% of the Inverter rated current.
Note 2. Set to the normal rated current of the maximum applicable motor.
Stall Prevention during Deceleration
n33
Setting range 0, 1
Factory setting 0
This constant is used to select the action to prevent overvoltage during deceleration.
Value
Description
Stall prevention during deceleration
No stall prevention during deceleration
0
1
Note 1. If a braking resistor is to be connected, always set “1” (no stall prevention during
deceleration) in this constant.
Note 2. If “0” (stall prevention during deceleration) is set in this constant, deceleration
time will be automatically lengthened to prevent overvoltage.
Explanation of Stall Prevention during Deceleration
Output
frequency
Deceleration time is controlled
to prevent overvoltage
Time
(Setting)
Deceleration time
4-19
OMRON [ OMRON ELECTRONICS LLC ]
