
E6581442
iii
6.23 Increasing the motor output torque further in low speed range···································································· F-42
6.24 Torque control·············································································································································· F-43
6.24.1 Torque command·································································································································· F-43
6.24.2 Speed limits in torque control mode······································································································ F-43
6.24.3 Selection of tension torque bias input and load sharing gain input······················································· F-44
6.25 Torque limit··················································································································································· F-45
6.25.1 Torque limit switching···························································································································· F-45
6.25.2 Torque limit mode selection at acceleration/deceleration······································································ F-47
6.26 Stall prevention function······························································································································· F-49
6.26.1 Power running stall continuous trip detection time················································································ F-49
6.26.2 Regenerative braking stall prevention mode selection·········································································· F-49
6.26.3 Stall prevention control switching·········································································································· F-49
6.27 Current and speed control adjustment ······································································································· F-50
6.27.1 Current and speed control gain············································································································· F-50
6.27.2 Prevention of motor current oscillation at light load ·············································································· F-50
6.27.3 Max output voltage modulation rate······································································································ F-50
6.28 Fine adjustment of frequency setting signal································································································· F-51
6.29 Operating a synchronous motor··················································································································· F-51
6.30 Acceleration/deceleration 2·························································································································· F-52
6.30.1 Setting acceleration/deceleration patterns and switching acceleration/deceleration
patterns 1, 2, 3 and 4···························································································································· F-52
6.31 Pattern operation·········································································································································· F-55
6.32 Preset speed mode······································································································································ F-57
6.33 Protection functions······································································································································ F-58
6.33.1 Setting of stall prevention level ············································································································· F-58
6.33.2 Inverter trip record retention·················································································································· F-58
6.33.3 Emergency stop···································································································································· F-59
6.33.4 Output phase failure detection·············································································································· F-60
6.33.5 OL reduction starting frequency············································································································ F-61
6.33.6 Motor 150%-overload time limit ············································································································ F-61
6.33.7 Input phase failure detections··············································································································· F-61
6.33.8 Control mode for low current················································································································· F-61
6.33.9 Detection of output short circuit ············································································································ F-62
6.33.10 Overtorque trip······································································································································ F-62
6.33.11 Cooling fan control selection················································································································· F-63
6.33.12 Cumulative operation time alarm setting······························································································· F-64
6.33.13 Abnormal speed detection···················································································································· F-64
6.33.14 Overvoltage limit operation··················································································································· F-65
6.33.15 Undervoltage trip··································································································································· F-65
6.33.16
Regenerative power ride-through control
level···························································································· F-65
6.33.17 Braking answer waiting time················································································································· F-65
6.33.18 VI/II analog input wire breakage detection level···················································································· F-66
6.33.19 Guide to time of replacement················································································································ F-66
6.33.20 Rush current suppression relay activation time ···················································································· F-66
6.33.21 Motor thermal protection······················································································································· F-67
6.33.22 Braking resistance overload curve········································································································ F-67
6.33.23 Selection of a restart condition for the motor stopped with a mechanical brake ··································· F-67
6.33.24 Protection against a failure of the control power backup device (optional CPS002Z)··························· F-68
6.34 Override······················································································································································· F-69
6.35 Adjustment parameters································································································································ F-71
6.35.1 Pulse train output for meters················································································································· F-71
6.35.2 Setting of optional meter outputs ·········································································································· F-72
6.35.3 Calibration of analog outputs················································································································ F-72
6.36 Operation panel parameter·························································································································· F-73
6.36.1 Prohibition of key operations and parameter settings··········································································· F-73
6.36.2 Displaying the rotational speed of the motor or the line speed ····························································· F-74
6.36.3 Changing the steps in which the value displayed changes··································································· F-75
6.36.4 Changing the standard monitor display································································································· F-76