Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-06-3
2. Add brake resistor (refer to Chapter 7-1 for details) to dissipate the electrical energy that
regenerated from the motor as heat type.
Related parameters: Pr.01-13, Pr.01-15, Pr.01-17, Pr.01-19 Decel. Time 1~4, Pr.02-13~Pr.02-14
Multiple-function output (Relay 1 and 2), Pr.02-16~Pr.02-17 Multiple-function output (MO1,2), and
Pr.06-01 over-voltage stall prevention.
Over-current Stall Prevention during Acceleration
Factory Setting: 120
Settings Normal duty: 0~160% (100%: drive’s rated current)
Light duty: 0~130% (100%: drive’s rated current)
If the motor load is too large or drive acceleration time is too short, the AC drive output current
may increase abruptly during acceleration and it may cause motor damage or trigger protection
functions (OL or OC). This parameter is used to prevent this situation.
During acceleration, the AC drive output current may increase abruptly and exceed the value
specified by Pr.06-03 due to rapid acceleration or excessive load on the motor. When this
function is enabled, the AC drive will stop accelerating and keep the output frequency constant
until the current drops below the maximum value.
When the over-current stall prevention is enabled, drive acceleration time will be larger than the
setting.
When the Over-Current Stall Prevention occurs due to too small motor capacity or in the factory
setting, please decrease Pr.06-03 setting.
When there is any problem by using acceleration time, refer to the following items to solve it.
Related parameters: Pr.01-12, 01-14, 01-16, 01-18 (settings of accel. time 1~4), Pr.01-44
1. Add the suitable acceleration time.
2. Setting Pr.01-44 Optimal Acceleration/Deceleration Setting to 1, 3 or 4 (auto accel.)
3. Optimal Acceleration/Deceleration Setting, Pr.02-13~02-15 (Multi-function Output 1 RY1,
RY2, RY3).
06-03
Over-Current
Detection
Level
Over-Current Stall prevention during
Acceleration,frequency held
actual acceleration time when over-current stall
prevention is enabled
Output current
Setting frequency
Output frequency
Time
Original setting of acceleration time
Over-current Stall Prevention during Operation
Factory Setting: 120
Settings Normal duty: 0~160% (100%: drive’s rated current)
Light duty: 0~130% (100%: drive’s rated current)
It is a protection for drive to auto decrease output frequency when the motor is over-load abruptly
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