YASKAWA CIPR-GA50C series Technical Manual page 695

• Damage to blade tips and broken string
Note:
If there is oC [Overcurrent] or oL1 [Motor Overload], the drive can stop during overtorque conditions. Use torque detection to identify
overload conditions before the drive detects oC or oL1 and stops. Use this function to detect issues that occur in the application.
■
Parameter Settings
You can individually set the two overtorque/undertorque detection functions with the drive. Use the information in
Table 12.70 to set the parameters.
Configuration Parameter
MFDO Function Select
• Terminal MA-MC
• Terminal P1-C1
• Terminal P2-C2
Detection conditions and selection of operation after
detection
Detection Level
Detection Time
*1 You can also use an analog input terminal to supply the torque detection level. To enable this function, set H3-xx = 7 [MFAI Function
Selection = Overtorque/Undertorque DetectLvl]. If both L6-02 and H3-xx = 7 are set, the analog input has priority and the setting of
L6-02 is disabled.
You cannot use Overtorque/Undertorque Detection 2 to set the detection level for the analog input terminals.
Note:
In V/f Control, the drive uses the current level (100% of the drive rated output current) to detect overtorque/undertorque. In vector
control, the drive uses the motor torque (100% of the motor rated torque)to detect overtorque/undertorque. When you enable the
mechanical weakening detection function, the overtorque/undertorque detection level for all control modes is the current level (100% of
the drive rated output current).
■
Time Chart for Detection of Overtorque/Undertorque
Overtorque Detection Time Chart
When you use Overtorque/Undertorque Detection 1, the drive detects overtorque if the motor current or motor
torque is at the detection level set in L6-02 [Torque Detection Level 1] for the time set in L6-03 [Torque Detection
Time 1]. Parameter L6-01 [Torque Detection Selection 1] sets the operation after detection.
When you use Overtorque/Undertorque Detection 2, set L6-04 [Torque Detection Selection 2], L6-05 [Torque
Detection Level 2], and L6-06 [Torque Detection Time 2].
Set the terminal that outputs the alarm in H2-01 to H2-03 [MFDO Function Select].
Note:
The drive applies a hysteresis of approximately 10% of the drive rated output current or the motor rated torque to the overtorque/
undertorque detection function.
Undertorque Detection Time Chart
When you use Overtorque/Undertorque Detection 1, the drive detects undertorque if the motor current or motor
torque is less than or equal to the detection level set in L6-02 for the time set in L6-03. Parameter L6-01 sets the
operation after detection.
When you use Overtorque/Undertorque Detection 2, set the operation in L6-04, L6-05, and L6-06.
Set the terminal that outputs an alarm in H2-01 to H2-03.
YASKAWA SIEPC71061753A GA500 Technical Manual
Table 12.70 Overtorque/Undertorque Detection Parameters
Overtorque/Undertorque Detection 1
H2-01, H2-02, and H2-03 = B
N.O.: Activated when detected
H2-01, H2-02, and H2-03 = 17
N.C.: Disactivated when detected
L6-01
L6-02
*1
Analog Input Terminal
H3-xx = 7
L6-03
Figure 12.125 Overtorque Detection Time Chart
12.9 L: Protection Functions
Overtorque/Undertorque Detection 2
H2-01, H2-02, and H2-03 = 18
N.O.: Activated when detected
H2-01, H2-02, and H2-03 = 19
N.C.: Disactivated when detected
L6-04
L6-05
-
L6-06
12
695