Specifications

YASKAWA Inverter Drive A1000 – Crane Software Application Manual
51
S5-04 Overload Detection Operation Selection 2: Determines overload detection conditions and the actions that are
carried out when an overload condition is detected.
No. Parameter Name Setting Range Default
S5-04
Overload Detection Operation Selection 4
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
S5-05 Overload Detection Torque 2
: 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.
S5-06 Overload Detection Time 2
: Sets the time that the torque reference (vector control) or output current (V/f control)
must surpass the level set to S5-05 before an Overload Condition is triggered.
No. Parameter Name Setting Range Default
S5-05
Overload Detection Torque 2 0 to 300 % 150 %
S5-06
Overload Detection Time 2 0.0 to 10.0 s 0.1 s
It is possible to trigger one of the drive’s multi-function digital outputs when an overload condition occurs using the
following settings:
H3- Setting
Name Message Description
22
Overload Detection (N.O.) Overload detection N.O.
If conditions for either Overload Detection 1 or 2 arise, then the output relay will close. It will remain
closed for the duration that "OL5" appears on the digital operator screen.
23
Overload Detection (N.C.) Overload Detection N.C.
If conditions for either Overload Detection 1 or 2 arise, then the output relay will open. It will remain open
for the duration that "OL5" appears on the digital operator screen.
7.7 Overtorque Detection Function (oL3, oL4)
As a protective safety feature, the A1000 Crane Drive has incorporated an Overtorque Detection function. When the drive
detects that the torque or current reference is too large, it can change its behavior depending on parameter settings. In
this section the parameters associated with the Overtorque 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 overtorque detection conditions can be set.
7.8 Overtorque Detection Function Parameters (S6-)
S6-01 Overtorque Detection Operation Selection 1: Determines overtorque detection conditions and the actions that are
carried out when an overload condition is detected.
No. Parameter Name Setting Range Default
S6-01
Overtorque Detection Operation Selection 1
0: Overtorque Detection Disabled
1: At Speed Agree. Alarm only during
overtorque detection, drive continues to run
2: During Run. Alarm only during overtorque
detection, drive continues to run.
3: At Speed Agree. Fault, coast to stop, fault
must be reset to continue operation.
4: During Run. Fault, coast to stop, fault must
be reset to continue operation.
5: At Speed Agree. Alarm only, reset when drive
stops, drive continues to run.
6: During Run. Alarm only, reset when drive
stops, drive continues to run.
0
S6-02 Overtorque Detection Level 1
: Sets the threshold above which an overtorque condition 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.
S6-03 Overtorque Detection Time 1
: Sets the time that the torque reference (vector control) or output current (V/f control)
must surpass the level set to S6-02 before an Overload Condition is triggered.
No. Parameter Name Setting Range Default
S5-02
Overtorque Detection Level 1 0 to 300 % 150 %
S5-03
Overtorque Detection Time 1 0.0 to 10.0 s 0.1 s