4-2 Function Mode Overtorque (OTQ) •This function outputs a signal when detecting a motor output torque estimated value exceeding a specified level. 4 Functions •Enabled when "overtorque signal" is selected in the multi-function output selection. You can use this function only when "sensorless vector control", "0-Hz sensorless vector control", or "sensor vector control" is selected in V/f characteristics selection A044/A244. With other settings, the output is unstable. •For elevating machines, use this signal for releasing the brake. To close the brake, use the frequency arrival signal.
0-Hz Detection Signal •This function outputs a detection signal when the Inverter's output frequency falls below the 0-Hz detection value set in 0-Hz detection level C063. •Enabled when "21" (ZS) is allocated to any of multi-function output terminals P1 to P5 (C021 to C025) or the relay output terminal (C026). When "VC", "special VP", "free V/F", "sensorless vector control", or "0-Hz sensorless vector control" is selected as the control method, this function works for the Inverter's output frequency. When the control method is "sensor vector control", this function works for the motor rotation frequency. 4-96 Parameter No.
Function name Data Default setting Unit C021 to C025 Multi-function output terminal selection 07: OTQ: Overtorque signal - C026 Relay output (MA, MB) function selection 05 C055 Overtorque level (Forward power running) 0. to 200.: OTQ signal output level for forward power running 100. % C056 Overtorque level (Reverse regeneration) 0. to 200.: OTQ signal output level for reverse regeneration 100. % C057 Overtorque level (Reverse power running) 0. to 200.: OTQ signal output level for reverse power running 100. % C058 Overtorque level (Forward regeneration) 0. to 200.: OTQ signal output level for forward regeneration 100. % Related functions A044, A244, A344, C063 Parameter No.
Function name Data Default setting Unit C021 to C025 Multi-function output terminal selection 21: ZS (0-Hz signal) Hz C026 Relay output (MA, MB) function selection 05 C063 0-Hz detection level 0.00 to 100.0: Set a frequency to be detected as 0 Hz. 0.00 Related functions A044, A244, A344