BENSHAW RSi GM2 Series, Instruction Manual

Page: 172 / 282

Learning Protection Features
162
GM2 Series VFD
890054-00-00
Inverter and Sequence Protection
Input/Output open-phase protection
Open-phase monitoring and protection can be set to either or both the input and output of the
inverter. The protection is used to prevent overcurrent levels at the inverter input and/or output
due to an open-phase. An open-phase at output may cause the motor to stall due to a lack of
torque. For input phase open, a voltage level can be set (Pr.06), below which the inverter will trip.
Group Code Name Setting Setting Range Unit
Pr
05
Input/output open-
phase protection
00* - bit
06
Input voltage range
during open-phase
15 1 – 100 V V
*Displayed as on the Keypad.
Input and Output Open-phase Protection Setting Details
Code and
Features
Description
Pr.05 Phase Loss
Chk,
Pr.06 IPO V Band
Input and/or output phase protection can be selected. When the top
LED segment is on, the corresponding bit is set On (1). When the
bottom LED segment is on, the corresponding bit is Off (0). Bit 0 is for
output phase monitoring, Bit 1 is for input phase monitoring.
Items Bit On Status Bit Off Status
Keypad
Configuration
Function
Bit1 Bit0
✓
Output open-phase protection
✓
Input open-phase protection
Initial values off input voltage range during open-phase are shown as
below.
Items Initial Value Unit
1.0 HP ~ 5.0 HP (0.4 kW~4.0 kW)
(240 V/480 V)
15 V
7.5 HP ~ 15 HP (5.5 kW~11 kW)
(240 V/480 V)
13 V