Specifications

YASKAWA Inverter Drive A1000 – Crane Software Application Manual
50
Ultra Lift 2 Function Time Chart
The following time chart shows drive operation when the Ultra Lift 2 Function is activated through the S4-01 parameter.
7.5 Overload Detection Function (oL5)
As a protective safety feature, the A1000 Crane Drive has incorporated an Overload Detection function. When the drive
detects that the load is too large, it can change its behavior depending on parameter settings. In this section the
parameters associated with the Overload Protection function are described. It is important to note that this function is
disabled when the Run Command is entered from the digital operator (b1-02 = 0), and only works when the brake has
been released. Two independent overload detection conditions can be set.
7.6 Overload Detection Function Parameters (S5-)
S5-01 Overload Detection Operation Selection 1: Determines overload detection conditions and the actions that are
carried out when an overload condition is detected.
No. Parameter Name Setting Range Default
S5-01
Overload Detection Operation Selection 1
0: Overload Detection Disabled
1: At Speed Agree. Alarm only, acceleration
halted, drive continues to run
2: During Run. Alarm only, acceleration
halted, drive continues to run.
3: At Speed Agree. Alarm only, emergency
stop, Run Command must be cycled.
4: During Run. Alarm only, emergency stop,
Run Command must be cycled.
5: At Speed Agree. Fault, coast to stop,
fault must be reset to continue operation.
6: During Run. Fault, coast to stop, fault
must be reset to continue operation.
0
S5-02 Overload Detection Torque 1
: Sets the threshold above which a crane overload is detected. In vector control
modes, set as a percentage of motor rated torque. In V/f control modes, set as a percentage of motor rated current.
S5-03 Overload Detection Time 1
: Sets the time that the torque reference (vector control) or output current (V/f control)
must surpass the level set to S5-02 before an Overload Condition is triggered.
No. Parameter Name Setting Range Default
S5-02
Overload Detection Torque 1 0 to 300 % 150 %
S5-03
Overload Detection Time 1 0.0 to 10.0 s 0.1 s
Time
OutputFrequency
FrequencyReference
FWD(REV)RunCmd
OutputPower
FAM2
LGS(LRS)
TA2timerstarts
LEA2
LGH(LRH)
TEA2timer
starts
TEA2
Faultisnot
triggered
TA2timerreset
TEA2timer
reset
FAM2=UltraLift2ActivationFrequency(S4‐08)
LEA2 =UltraLift2FaultDetectionLevel(S4‐15)
LGH =UltraLift2MotoringHoldLevel(S4‐10)
LGS =UltraLift2MotoringLimitStartLevel(S4‐09)
LRH =UltraLift2RegenHoldLevel(S4‐12)
LRS =UltraLift2RegenLimitStartLevel(S4‐11)
TA2 =Ultra
Lift2LimitTimer(S4‐13)
TEA2 =UltraLift2FaultDetectionTime(S4‐16)