Specifications

YASKAWA Inverter Drive A1000 – Crane Software Application Manual
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7.3.3 Impact Stop Time Chart
The following time chart shows drive operation when the Impact Stop Function is triggered. It is assumed that the drive
has a constant frequency reference.
7.4 Ultra Lift Acceleration Function
Depending on the load, the A1000 Crane Drive can modify the frequency reference or acceleration rate in order to
shorten operation time or protect the load. These functions are called Ultra Lift and are divided into two different sections.
The following parameter can be used to select between the two Ultra Lift functions or disable them altogether.
S4-01 Ultra Lift Control Selection
: This parameter selects the Ultra Lift function to be used or disables the function.
No. Parameter Name Setting Range Default
S4-01
Ultra Lift Control Selection
0: Ultra Lift Disabled
1: Ultra Lift Function 1 Enabled
2: Ultra Lift Function 2 Enabled
0
7.4.1 Ultra Lift Acceleration Function 1
The Ultra Lift Acceleration Function 1 can be used to shorten the cycle time of the crane when a load lighter than the
crane’s capabilities is hoisted or lowered. When the function is activated and the drive detects a light load on the crane, a
higher frequency reference and thus a higher motor speed is allowed. The Ultra Lift 1 function can be activated using
parameter S4-01 or by setting one of the drive’s multi-function digital inputs to 30 with parameters H3-. In this section the
parameters that influence the Ultra Lift 1 Acceleration Function are described, the drive’s operation in Ultra Lift 1 is
detailed, and a time chart of the function is shown.
Ultra Lift Acceleration Function 1 Parameters (S4-)
S4-02 Ultra Lift 1 Max Frequency FWD (FAMF)
: Sets the maximum output frequency in the FWD direction for the drive
when a light load is detected and the Ultra Lift 1 function is activated. The maximum output frequency set to parameter
E1-04 has priority over this setting.
S4-03 Ultra Lift 1 Max Frequency REV (FAMR)
: Sets the maximum output frequency in the REV direction for the drive
when a light load is detected and the Ultra Lift 1 function is activated. The maximum output frequency set to parameter
E1-04 has priority over this setting.
No. Parameter Name Setting Range Default
S4-02
Ultra Lift 1 Max Frequency FWD 60.0 Hz
S4-03
Ultra Lift 1 Max Frequency REV
40.0 to 200.0 Hz
60.0 Hz
S4-04 Ultra Lift 1 Detection Torque FWD (IFAT)
: Sets the torque threshold in the FWD direction at which the drive
determines that there is a light load on the crane and activates the Ultra Lift 1 function. This parameter is set as a
percentage of motor rated torque in vector control modes and as a percentage of motor rated current in V/f control
modes. To find an optimal setting for this parameter the U1-48 monitor for Ultra Lift torque reference can be used.
OutputFrequency
ImpactStopSignal
H1‐XX=35
FWD(REV)RunCmd
BrakeOperations
BrakeReleaseCheckBX
BrakeReleaseCmdBR
BDT
TorqueReferenceITR
Time
FCR
FHF(RHF)
HF
HT
IFOT(IROT)
TIOT
TCRtimerstarts
BDT = BrakeOperationDelayTime
FCR =ImpactStopCreepFrequency(S3‐01)
FHF =FWDBrakeHoldFrequency(S1‐12)
HF = SlipPreventionFrequency(S1‐14)
HT = SlipPreventionTime(S1‐15)
IFOT =ImpactStopDetectionTorqueFWD(S3‐03)
IROT =ImpactStopDetectionTorqueREV(S3‐04)
RHF =REVBrakeHoldFrequency(S1‐13)
TCR =ImpactStopCreepTime
(S3‐02)
TF =FWDBrakeReleaseTorque(S1‐07)
TIOT =ImpactStopDetectionTime(S3‐05)
TR =REVBrakeReleaseTorque(S1‐08)