Mitsubishi Electric F700 Instruction Manual page 142

(2) Function related to 4mA input check
Function
Minimum frequency
Even if the input current decreases, minimum frequency setting clamp is valid.
Operation by multiple speed signal has precedence even if input current
Multi-speed operation
decreases. (Frequency is not retained when the input current decreases.)
Operation stops when a multi-speed signal turns off.
The Jog signal has precedence even during decrease in input current.
(Frequency is not retained when the input current decreases.)
Jog operation Operation stops when the jog signal is turned off during decrease in input current.
PU/jog operation is enabled during PID control.
At this time, PU/jog operation has precedence during decrease in input current.
Output is shut off by the MRS signal even if input current decreases. (The inverter
MRS
stops when the MRS signal is turned off.)
The retained frequency will not change even if remote acceleration/deceleration
Remote setting
and clear are performed during decrease in input current. Reflected at
restoration.
When retry was successful at error occurrence during decrease in input current,
Retry
retained frequency was not cleared and operation continues.
Added compensation,
Operation of added compensation (terminal 1) and override compensation
override function (terminal 2) are invalid during decrease in input current.
The value before filtering is detected.
Input filter time
When input current decreases, frequency after filtering (average value) is
constant
retained.
Forward/reverse
Motor rotation direction can be restricted independently of 4mA input check
rotation prevention setting.
Although PID operation is stopped when input current decreases, the X14 signal
PID control
remains on. (PID operation is valid.)
Even if input current decreases when undervoltage or power failure occurs, the
Power failure stop
motor stops according to the setting of power-failure deceleration stop function
If auxiliary motor switchover conditions of pump function is satisfied even when
Pump function
input current decreases, motor connection/release operation is performed.
When input current decreases, traverse operation is performed using retained
Traverse function
frequency as reference.
When the switchover function is operated, frequency is the same as that of the
retained frequency.
Switch-over
Note that if 4mA input is made invalid once in switchover mode, the frequency is
not retained next time.
♦ Parameters referred to ♦
Pr. 73 Analog input selection
Pr. 267 Terminal 4 input selection
Operation (Pr. 573 = 1)
Refer to page 127
Refer to page 125
Frequency setting by analog input (terminal 1, 2, 4)
Refer to
page
62
67
69
87
72
114
127
128
140
184
112
197
206
142
3
135