Delta VFD-E - Over-Current Stall Prevention During Operation

Chapter 4 Parameters|
Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12 4-109
 Related parameters: Pr.01.09(Accel Time 1), Pr.01.11(Accel Time 2), Pr.01.16(Auto
acceleration / deceleration (refer to Accel/Decel time setting)), Pr.03.00(Multi-function Output
Relay (RA1, RB1, RC1)), Pr.03.01(Multi-function Output Terminal MO1) and Pr.06.03(Over-
Torque Detection Mode (OL2))
06.01
Over-Current
Detection
Level
Over-Current Stall
prevention during
Acceleration,
frequency held
output current
setting
frequency
previous acceleration time
actual acceleration time when over-current stall
prevention is enabled
output current
Time
06.02
Over-current Stall Prevention during Operation
Unit: 1
Settings 20 to 250% Factory Setting: 170
0: disable
 The over-current stall prevention during operation function is a protection. When the motor
runs with constant speed, the AC motor drive will decrease the output frequency automatically
when momentary overload.
 If the output current exceeds the setting specified in Pr.06.02 when the drive is operating, the
drive will decrease its output frequency by Pr.01.10/Pr.01.12 to prevent the motor stall. If the
output current is lower than (Pr.06.02 setting –rated current X 5%), the drive will accelerate
again by Pr.01.09/Pr.01.11 to catch up with the set frequency command value.
 Related parameter: Pr.06.03 Over-Torque Detection Mode (OL2)