Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 677

• Set "3" for an elevated load that is in the driving mode during reverse rotation and in the regenerative load mode during
forward rotation according to the load weight, e.g. counterweight system.
NOTE
• When torque is continuously regenerated as vertical lift load, it is effective to set the rated voltage in Pr.19 Base frequency
voltage to prevent trip due to current at regeneration.
 Switching load pattern using signal (Pr.14 = "4, 5")
• The output characteristics can be switched between for constant-torque load and for lift with the RT signal or X17 signal.
• To input the X17 signal, set "17" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function.
• Switching with the RT signal will become disabled when the X17 signal is assigned.
Pr.14 setting
4
5
NOTE
• The RT signal is assigned to the terminal RT in the initial status. Set "3" in one of Pr.178 to Pr.189 (Input terminal function
selection) to assign the RT signal to another terminal.
• Changing the terminal assignment using Pr.178 to 189 may affect other functions. Set parameters after confirming the function
of each terminal.
• Pr.14 will become enabled under V/F control.
• Other second functions will become enabled when the RT signal is ON.
Parameters referred to
Pr.0 Torque boostpage 672
Pr.3 Base frequencypage 673
Pr.178 to Pr.189 (Input terminal function
676
5. PARAMETERS
5.16 (G) Control parameters
Pr.14 = 2
For vertical lift loads
At forward rotation boost...Pr.0 setting
At reverse rotation boost...0%
100%
Forward
rotation
Reverse
rotation
Pr.0
Base frequency
Output frequency (Hz)
RT (X17) signal
ON
OFF
ON
OFF
selection)page 496
Pr.14 = 3
For vertical lift loads
At forward rotation boost...0%
At reverse rotation boost...Pr.0 setting
100%
Reverse
rotation
Forward
rotation
Pr.0
Base frequency
Output frequency (Hz)
Output characteristics
For constant-torque load (same as setting value "0")
For lift, boost at reverse rotation 0% (same as setting value "2")
For constant-torque load (same as setting value "0")
For lift, boost at forward rotation 0% (same as setting value "3")