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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-5 Multi-function Terminal Functions (Group C)
7
• FA3 will be output only when the output frequency exceed the Arrival Frequency During
Acceleration/Deceleration 1 (C042/C043); FA5 will be output when the output frequency exceed the
Arrival Frequency During Acceleration/Deceleration 2 (C045/C046).
• Set the Multi-function Output P1 to P5 Selection (C021 to C025) or Multi-function Relay Output (MA,
MB) Function Selection (C026) to 06 (FA3) or 25 (FA5) to allocate the desired signal.
Use this function to detect that the estimated motor output torque value has exceeded the set level and
output the overtorque signal.
• To enable this function, set the Multi-function Output P1 to P5 Selection (C021 to C025) or
Multi-function Relay Output (MA, MB) Function Selection (C026) to 07 (Overtorque signal).
• This function is enabled only when the 1st/2nd Control Method (A044/A244) is set to 03 (Sensorless
vector control), 04 (0-Hz sensorless vector control), or 05 (Sensor vector control). Note that the
output will be unstable with other settings.
• In applications such as an elevator, use this signal for releasing the brake. To apply the brake, use the
frequency arrival signals.
Set-frequency Only Signal (06: FA3, 25: FA5)
Overtorque (OTQ)
Parameter No. Function name Data Default data Unit
C021 to C025
Multi-function Output P1
to P5 Selection
07: OTQ (Overtorque/Undertorque
signal)
–
–
C026
Multi-function Relay
Output (MA, MB)
Function Selection
05
C055
Overtorque level
(Forward Power
Running)
Heavy
load
(CT)
0. to 200. (0.4 to 55 kW)
0. to 180. (75 to 132 kW)
100. %
C056
Overtorque level
(Reverse Regeneration)
C057
Overtorque level
(Reverse Power
Running)
Light
load
(VT)
0. to 150. 100. %
C058
Overtorque level
(Forward Regeneration)
Related functions A044, A244, A344, C063
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