Functions Common To All The Control Modes; Ramps - WEG CFW501 V1.8X Programming Manual

11 FUNCTIONS COMMON TO ALL THE CONTROL MODES

This chapter describes the functions common to all the inverter control modes V/f and VVW, 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 speed (P0134) and the time
for a linear deceleration from the maximum speed to zero.
In the CFW501, 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.
3 Ramp – it is used for the inverter protection functions, such as: current limitation, DC link control, quick
rd
„
stop, etc. The 3 Ramp has priority over the other ramps.
rd
NOTE!
The setting with too short ramp time may cause overcurrent in the output (F0070), undervoltage
(F0021) or overvoltage (F0022) of the DC link.
P0100 – Acceleration Time
Adjustable 0.1 to 999.0 s
Range:
Properties:
Access groups
BASIC
via HMI:
Description:
Acceleration time from zero to maximum speed (P0134).
P0101 – Deceleration Time
Adjustable 0.1 to 999.0 s
Range:
Properties:
Access groups BASIC
via HMI:
Description:
Deceleration time from maximum speed (P0134) to zero.
Functions Common to all the Control Modes
Factory 10.0 s
Setting:
Factory 10.0 s
Setting:
CFW501 | 11-1
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