55
(26)Overtorque Detection Level (Cn-32)
(27)Overtorque Detection Time (Cn-33)
•The Overtorque detection function detects the excessive mechanical load from an
increase of output current. When an overtorque detection is enabled through the
setting Sn-12, be sure to set Overtorque Detection Level (Cn-32) and Overtorque
Detection Time (Cn-33). An overtorque condition is detected when the output
current exceeds the Overtorque Detection Level (Cn-32) for longer than the
Overtorque Detection Time (Cn-33). The multi-function output terminals (control
circuit terminals RA-RB-RC or R1A-R1B-R1C, DO1, DO2 or R2A-R2C) can be
set to indicate an overtorque condition has been detected.
Motor
current
Cn-32
Hysteresis
width 5%
ON ON
Cn-33 Cn-33
Overtorque
detection
signal
Fig. 26 Time chart for overtorque detection
•Properly set the value of Sn-12 will allow
a. enable only during frequency agreement. Continue operation even after detection.
b. enable only during frequency agreement. Stop operation after detection.
c. enable at anytime. Continue operation even after detection.
d. enable at anytime. Stop operation after detection.
•See more details on page 76
(28)Carrier Frequency Setting (Cn-34)
•Lower the carrier frequency can decrease the noise interference and leakage
current. Its setting is shown below.
1 2 6*543
Carrier frequency(kHz) = 2.5kHz* Cn-34 setting
(2.5 kHz) (15 kHz)
Carrier frequency
(louder) (insensible)
Audio noise
Cn-34 =
*factory setting
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