Constant
no.
Factory settingSetting rangeDescriptionDedicated
indicator
n51 Over-torque detection level 30 to 200 160 (%)
n52 Over-torque detection time 0.1 to 10.0 0.1 (seconds)
n53 Frequency detection level 0.0 to 400 0.0 (Hz)
n67 Unit no. (see note 4) 0to15 0
n68 Error history (Display only)
Note 1. The setting range and factory setting for n31 (electronic thermal reference cur-
rent) depend on the Inverter model. For details, refer to
page 4-19
.
Normally, set the rated motor amperage in n31.
Note 2. Displaying the constant no. corresponding to an indicator in the “Dedicated
indicator” column lights the indicator.
Note 3. Constant no. 02 (n02) and subsequent constants can be set only when
constant no. 01 (n01) is set to 1.
Note 4. After setting the Unit no. in n67, turn the power off (make sure that all LEDs go
off), then turn the power on. This makes the setting valid.
Details of Each Constant
Constant Write-Inhibit Selection/Constant Initialization
Setting range 0, 1, 8 Factory setting 1
One of the following four values can be selected:
Value Description
0 Only n01 can be set.
1 Constants n01 to n68 can be displayed and set.
8 All constants are returned to factory settings.
Note If other constants are to be set, always set “1” in n01.
Operation Mode Selection
Setting range 0, 1 Factory setting 1
This constant is used to specify whether the Inverter is to be operated with a Digital
Operator or via communication.
Value Run command Frequency reference
0 Digital Operator Digital Operator
1 Communication Digital Operator
Note The above setting operation can be performed when constant no. 02 is selected.
This operation is also possible when the dedicated indicator (“MODE”) is lit.
Chapter 4
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