LSIS LSLV0055H100-4COFN - Inverter and Sequence Protection; Open-Phase Protection

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Learning Protection Features
6.2 Inverter and Sequence Protection
6.2.1 Open-phase Protection
Open-phase protection is used to prevent over current levels induced by the inverter inputs
due to an open-phase within the input power supply. Open-phase output protection is also
available. An open-phase at the connection between the motor and the inverter output may
cause the motor to stall, due to a lack of torque.
Group
Code
Name
LCD Display
Parameter
Setting
Setting
range
Unit
PRT
05
Input/output open-
phase protection
Phase Loss Chk
00
-
bit
06
Open-phase input
voltage band
IPO V Band
40
1–100 V
V
Input and Output Open-phase Protection Setting Details
Code
Description
PRT-05 Phase
Loss Chk
PRT-06 IPO V
Band
When open-phase protection is operating, input and output configurations
are displayed differently. When the LCD segment is On, the corresponding
bit is set to ‗Off‘.
Item
Bit status (On)
Bit status (Off)
Keypad
display
Setting
Function
Bit 2
Bit 1

Output open-phase protection

Input open-phase protection