Functions Common To All The Control Modes; Ramps - WEG CFW100 Programming Manual

11 FUNCTIONS COMMON TO ALL THE CONTROL MODES

This chapter describes the functions common to the inverter V/f and V VW control modes, but which interferes
in the drive performance.

11.1 RAMPS

The inverter ramp functions allow the motor to accelerate or decelerate faster or slower. They are adjusted by
parameters that define the linear acceleration time between zero and the maximum frequency (P134) and the time
for a linear deceleration from the maximum frequency zero.
In the CFW100, three ramps with different functions were implemented:
1 Ramp – standard for most functions.
st
„
2 Ramp – it may be activated by the user, according to the drive requirement, by means of the inverter
nd
„
command word or by a digital input.
Emergency Ramp – it is used for the inverter internal protection functions, such as: current limitation, DC link
„
regulation, etc. The Emergency Ramp has priority over the other ramps.
NOTE!
The setting with too short ramp time may cause overcurrent in the output (F070), undervoltage (F021)
or overvoltage (F022) of the DC link.
P100 – Acceleration Time
Adjustable 0.1 to 999.9 s
Range:
Properties:
Description:
Acceleration time from zero to maximum frequency (P134).
P101 – Deceleration Time
Adjustable 0.1 to 999.9 s
Range:
Properties:
Description:
Deceleration time from maximum frequency (P134) to zero.
P102 – Acceleration Time 2
Adjustable 0.1 to 999.9 s
Range:
Properties:
Description:
Acceleration time from zero to maximum frequency (P134) when the 2
Functions Common to All the Control Modes
Ramp
nd
Return Advance
Factory
Setting:
Factory
Setting:
Factory
Setting:
Ramp is active.
nd
5.0 s
11
10.0 s
5.0 s
CFW100 | 11-1