YASKAWA GA700 Technical Manual page 858

11.9 L: Protection Function
lasts at least as long as the setting of L6-10 [Mechanical Weakening Detect Time]. The drive detects oL5
[Mechanical Weakening Detection 1] or UL5 [Mechanical Weakening Detection 2] by using L6-01 to L6-03
[Torque Detection 1 Setting Parameter]. The operation after detection is set in L6-08.
The terminal that outputs the fault is set in H2-01 to H2-04 [MFDO Function Select].
MFDO Function Select
• Terminals M1-M2
• Terminals M3-M4
• Terminals P1-C1
• Terminals P2-C2
Operation Selection after Detection
Detection Start Time
Speed Range
Overtorque
■
L6-01: Torque Detection Selection 1
No.
Name
(Hex.)
L6-01 Torque Detection
Selection 1
(04A1)
Overtorque is detected when the motor current or output torque continues to be at least the level set in L6-02
[Torque Detection Level 1] for at least the time set in L6-03 [Torque Detection Time 1]. Undertorque is detected
when the motor current or output torque continues to be lower than or equal to the level set in L6-02 for at least
the time set in L6-03.
0 : Disabled
Detection of overtorque and undertorque is not performed.
1 : OL Alm at SpdAgr
Overtorque is detected only when the output frequency matches the frequency reference. Detection does not occur
during acceleration/deceleration. oL3 [Overtorque Detection 1] is output, but operation continues after detection.
2 : OL Alm dur RUN
Detection of overtorque is constantly performed when the run command is enabled. oL3 is output, but operation
continues after detection.
3 : OL Flt at SpdAgr
Overtorque is detected only when the output frequency matches the frequency reference. Detection does not occur
during acceleration/deceleration. oL3 is output after detection, and operation stops.
4 : OL Flt dur RUN
Detection of overtorque is constantly performed when the run command is enabled. oL3 is output after detection,
and operation stops.
5 : UL Alm at SpdAgr
Undertorque is detected only when the output frequency matches the frequency reference. Detection does not
occur during acceleration/deceleration. UL3 [Undertorque Detection 1] is output, but operation continues after
detection.
6 : UL Alm dur RUN
Detection of undertorque is constantly performed when the run command is enabled. UL3 is output, but operation
continues after detection.
858
Table 11.60 Mechanical Weakening Detection Settings Parameters
Configuration Parameter
Detection Criteria
Detection Level
Detection Time
Detection Criteria
Detection Level
Detection Time
V/f CL-V/f OLV
Selects the speed range at which overtorque/undertorque is detected and the
operation of drives (operation status) after detection.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
CLV AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Mechanical Deterioration Detection
H2-01, H2-02, H2-03, H2-04 = 22
L6-08
L6-11
L6-08
L6-09
L6-10
L6-01
L6-02
L6-03
Default
(Range)
0
(0 - 8)