7-12
Overtorque/Undertorque Function
7-12-1
Overtorque/Undertorque Function Settings
Use this function to detect that the estimated motor output torque value exceeded the set level and
output the overtorque signal.
• To enable detection of the overtorque state, allocated “46: OTQ (Over/under torque signal) (NO con-
tact)” to Output Terminal [DO1] Function Selection (3005Hex-15Hex) or Output Terminal [ROA,
ROB] Function Selection (3005Hex-1CHex). Detection of the undertorque state also can be enabled
by allocating “1046: OTQ (Over/under torque signal) (NC contact).”
• The overtorque/undertorque ON signal is output when the torque value calculated by the inverter or
the torque command value is at the set level of torque detection (operation level) or higher, and con-
tinues for the set time of torque command detection (timer time) or longer. The overtorque/undertor-
que signal is turned OFF when the torque calculation value becomes “operation level - 5% of the
motor rated torque or lower.”
• The operation level can be set separately to each of the four quadrants, and the state at accelera-
tion/deceleration and constant speed also can be selected.
• For calculating the overtorque and undertorque levels in this function, the motor rated torque is tak-
en to be 100%.
• Use this function to detect the brake release signal of an elevator, or if the load applied to the load
machine is abnormally high.
Parameter No. Function name Data Default data Unit
3005Hex-15Hex
Output Terminal [DO1] Function
Selection
46: OTQ (Overtorque)
1046: OTQ (Undertorque)
- -
3005Hex-1CHex
Output Terminal [ROA, ROB]
Function Selection
3005Hex-4FHex
Overtorque/Undertorque Detec-
tion Level at Forward Power Run-
ning
0 to 300
100 %
3005Hex-51Hex
Overtorque/Undertorque Detec-
tion Level at Reverse Regenera-
tion
0 to 300 100 %
301FHex-61Hex
Overtorque/Undertorque Detec-
tion Level Reverse Power Run-
ning
0 to 300 100 %
301FHex-62Hex
Overtorquee/Undertorque Detec-
tion Level Forward Regeneration
0 to 300 100 %
3005Hex-50Hex
Torque detection 1 Detection Tim-
er
0.01 to 600.00 10.00 s
301FHex-63Hex
Overtorque/Undertorque Detec-
tion Condition Selection
0: Output during accelera-
tion/deceleration and con-
stant-speed operation
1 s
1: Output only during con-
stant-speed operation
7 Vector Control and Applied Functions
7-86
M1 Series EtherCAT Type User’s Manual (I670)
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