Functions Common to All the Control Modes
11-4 | CFW500
11
NOTE!
The inverter protection functions use the 3
rd
Ramp defined by P0106 for both acceleration and
deceleration.
11.2.1 DC Link Voltage Limitation by “Ramp Hold” P0150 = 0 or 2
It has effect during deceleration only.
Actuation: when the DC link voltage reaches the level set in P0151, a command is set to the “ramp” block,
which inhibits the motor speed variation according to
and
.
Use recommended in the drive of loads with high moment of inertia referred to the motor shaft or loads that
require short deceleration ramps.
11.2.2 DC Link Voltage Limitation by “Accelerate Ramp” P0150 = 1 or 3
It has effect in any situation, regardless the motor speed condition: accelerating, decelerating or constant speed.
Actuation: the DC link voltage is measured (P0004) and compared to the value set in P0151; the difference
between those signals (error) is multiplied by the proportional gain (P0152); the result is then added to the ramp
output, as per
and
Use recommended in the drive of loads that require braking torques at constant speed situation in the inverter
output. For example, drive of loads with eccentric shaft as in sucker rod pumps; another application is the load
handling with balance like in the translation in overhead cranes.
NOTE!
When using Rheostatic Braking, the function “Ramp Hold” or “Accelerate Ramp” must be disabled.
Refer to description of P0151.
P0150 – Type DC V/f Link Regulator
Adjustable
Range:
0 = hold_Ud and decel_LC
1 = accel_Ud and decel_LC
2 = hold_Ud and hold_LC
3 = accel_Ud and hold_LC
Factory
Setting:
0
Properties:
cfg
Access Groups
via HMI:
MOTOR
Description:
P0150 configures the behavior of the ramp for the limitation functions of the DC Link Voltage and Current
Limitation. In those cases, the ramp ignores the reference and takes an action of accelerating (accel), decelerating
(decel) or freezing (hold) the normal path of the ramp. That occurs because of the limit pre-defined in P0151 and
P0135 for the DC Link (Ud) Limitation and for Current (LC) Limitation, respectively.
P0151 – DC Link Regulation Level
Adjustable
Range:
339 to 1200 V
Factory
Setting:
400 V (P0296 = 0)
800 V (P0296 = 1)
1000 V (P0296 = 2)
Properties:
Access Groups
via HMI:
MOTOR
Summary of Contents for CFW500 V1.8X
Page 2: ......
Page 4: ......
Page 8: ...Contents...
Page 34: ...General Information 2 4 CFW500...
Page 38: ...About the CFW500 3 4 CFW500 3...
Page 42: ...HMI and Basic Programming 4 4 CFW500 4...
Page 52: ...Programming Basic Instructions 5 10 CFW500 5...
Page 56: ...Identification of the Inverter Model and Accessories 6 4 CFW500 6...
Page 76: ...Available Motor Control Types 8 4 CFW500 8...
Page 84: ...V f Scalar Control 9 8 CFW500 9...
Page 170: ...Communication 17 8 CFW500 17...