Specifications

YASKAWA Inverter Drive A1000 – Crane Software Application Manual
49
high, even heavy loads will reach high speeds and the motor may stall, causing the load to slip.
No. Parameter Name Setting Range Default
S4-09
Ultra Lift 2 Motoring Limit Start Level 50 %
S4-10
Ultra Lift 2 Motoring Hold Level 100 %
S4-11
Ultra Lift 2 Regen Limit Start Level 10 %
S4-12
Ultra Lift 2 Regen Hold Level
0 to 200 %
100 %
S4-13 Ultra Lift 2 Limit Timer (TA2)
: If the acceleration rate is lengthened using the Ultra Lift 2 function for a time longer
than the value set in this parameter, acceleration is halted until the motor comes to a complete stop. This parameter is
normally set between 50 and 100% of the acceleration time when running at high speed. It can prevent reacceleration
when making a transition in Ultra Lift or when the load has already reached the ground.
No. Parameter Name Setting Range Default
S4-14
Ultra Lift 2 Limit Timer 0.1 to 10.0 s 1.0 s
S4-14 Ultra Lift 2 Fault Operation Selection
: Determines drive’s reaction when an Ultra Lift 2 function fault (oL16) occurs.
S4-15 Ultra Lift 2 Fault Detection Level (LEA2): Sets the power threshold at which the drive will fault when the Ultra Lift 2
function is activated. This parameter is set as a percentage of motor rated power and the typical setting range is between
100 and 150%.
S4-16 Ultra Lift 2 Fault Detection Time (TEA2)
: Sets the time during which output power must surpass the level set to
Ultra Lift 2 Fault Detection Level LEA2 before an oL16 fault is triggered. This parameter is usually set between 0.1 and
1.0 seconds
No. Parameter Name Setting Range Default
S4-09
Ultra Lift 2 Fault Operation Selection
0: Ramp to Stop
1: Coast to Stop
2: Emergency Stop
3: Alarm Only, Acceleration
Prohibited
2
S4-10
Ultra Lift 2 Fault Detection Level 0 to 200 % 150 %
S4-11
Ultra Lift 2 Fault Detection Time 0.0 to 10.0 s 0.1 s
S4-17 Ultra Lift 2 Accel Time Gain (GAT)
: Sets the scaling factor for the acceleration time when the Ultra Lift 2 function is
activated. This parameter is usually set between 1.5 and 3.0. When set to 1.0, the acceleration time will not be modified if
the Ultra Lift 2 function is activated.
No. Parameter Name Setting Range Default
S4-17
Ultra Lift 2 Accel Time Gain 1.0 to 10.0 2.0
S4-18 Operation Selection During Ultra Lift 2 Regen
: Determines if the Ultra Lift 2 function can be activated when the
drive is regenerating.
No. Parameter Name Setting Range Default
S4-18
Operation Selection During Ultra Lift 2 Regen
0: Disabled
1: Enabled
0
Ultra Lift 2 Operation
(1) When the Ultra Lift 2 function is enabled through parameter S4-01 or using a multi-function digital input, the drive
will accelerate normally until the output frequency reaches the Ultra Lift 2 Activation Frequency FAM2. At this point,
the drive will start to monitor its output power.
(2) If the output power exceeds the value set to Ultra Lift 2 Limit Start Level LGS (LRS) then the drive will lengthen the
acceleration rate to limit the kinetic energy of the load using the Ultra Lift 2 Accel Time Gain GAT as the factor of
modification. At this moment the Ultra Lift 2 Timer TA2 counter is initiated. The counter is reset whenever the output
power goes below the level set to LGS (LRS).
(3) If output power reaches the level set to Ultra Lift 2 Hold Level LGH (LRH) or if the Ultra Lift 2 Timer TA2 expires
then the drive will halt acceleration. If the timer expires then the drive will not accelerate again until the motor
comes to a complete stop.
(4) If output power reaches the level set to the Ultra Lift 2 Fault Detection Level LEA2 for the duration of the Ultra Lift 2
Detection Time TEA2 then the drive will activate the protection function selected in S4-09.