Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 718 / 1218

(A) Application parameters Parameters
5 - 516
NOTES When the current averaging range includes the constant-output range, the output current may
become large in the constant-output range.
When the average current value in the current averaging range is small, deceleration time
becomes longer as the running frequency increases.
The automatic restart after instantaneous power failure function, fast-response current limit oper-
ation, fast-response current limit operation, shortest acceleration/deceleration, and optimum
acceleration/deceleration are invalid.
Changing the terminal assignment with Pr. 178 to Pr. 189 (input terminal function selection) may
affect other functions. Set parameters after confirming the function of each terminal.
Under the following operating conditions, the load torque high-speed frequency function is inva-
lid:
PU operation (Pr. 79), PU + External operation (Pr. 79), JOG operation, PID control function opera-
tion (Pr. 128), remote setting function operation (Pr. 59), orientation control function operation,
multi-speed setting (RH, RM, RL signal), torque control, position control.
When the average current during acceleration is too small, it may be judged as regeneration, and
the maximum frequency may become the setting of Pr. 5.
The output frequency may change due to the load, so do not get unnecessarily close to the motor
or machine.
Parameters referred to
Pr. 4 to Pr. 6,
Pr. 24 to Pr. 27
(multi-speed setting) => page 5-197
Pr. 57 Restart coasting time => page 5-581, page 5-590
Pr. 59 Remote function selection => page 5-255
Pr. 79 Operation mode selection => page 5-271
Pr. 128 PID action selection => page 5-543
Pr. 178 to Pr. 189 (input terminal function selection) => page 5-439