Vector Control - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Function assignment of external terminal and control
Under real sensor less vector control,

vector control

Power
ON
supply
ON
STF
RH
MRS
Pre-excitation
(0 speed control)
Reset
processing
ON
RY
RY2
RUN
ON
RUN2
ON
RUN3
Inverter
Status
Start Start
Signal Signal is
is OFF ON
(during (pre-
Output
stop) excitation)
Signal
RY ON
RY2 OFF
RUN OFF OFF
RUN2 OFF
RUN3 OFF
*1 Pre-excitation is made when the start signal is ON and frequency command is 0Hz.
*2 This signal turns OFF during power failure or undervoltage.
*3 There is a delay of 100ms (500ms for the 75K or more) when the signal is ON.
*4 This signal turns ON during servo ON (LX signal is ON) under position control.
Pr. 190 to Pr. 196 Setting
Output
Signal
Positive logic
RY
11
RY2 33
RUN
0
RUN2
44
RUN3 45
REMARKS
⋅ The RUN signal is assigned to the terminal RUN in the initial setting.
234
OFF
OFF
ON
ON
Pr. 13
Time
OFF
ON OFF
OFF
ON
OFF
OFF
Start
LX Signal
Signal is
is ON
ON
*1
(pre-
(during
excitation)
running)
ON ON ON
ON ON ON
ON OFF
ON ON OFF
ON ON ON
Negative logic
111
133
100
144
145
⋅ When the inverter is ready to operate, the output of the
operation ready signal (RY) is on.
(It is also on during inverter running.)
⋅ When the inverter output frequency rises to or above the Pr.
13 Starting frequency setting, the output of the inverter running
signal (RUN) is turned on. During an inverter stop, DC
injection brake operation, start time tuning or pre-excitation,
the output is off.
⋅ For the RUN2 signal, the output is on while the inverter is
running and the start signal is on. (For the RUN2 signal, the
output is off when the inverter protective function is activated
and the MRS signal is on.)
⋅ For the RUN3 signal, the output is on while the inverter is
running and the start signal is on.
⋅ The RUN2 and RUN3 signals are on when the start command
is on and even during pre-excitation with "0" set in speed
command. (Note that the RUN2 signal turns off during pre-
excitation by turning the LX signal on.)
⋅ The RY2 signal turns on at the start of pre-excitation.
The signal is on while pre-excitation is activated even during an
inverter stop. The signal turns off while the output is shut off
(MRS signal).
REMARKS
For pre-excitation by pre-excitation signal (LX), the RY2 signal
turns on when 100ms has elapsed after LX signal turn on
(500ms for the 75K or more).
LX
ON
100(500)ms
RY2
At Alarm
DC
Occurrence or
Injection
MRS Signal is on
Brake
(output shutoff)
Operation
Start
(pre-
signal is
excitation)
ON
ON OFF
ON OFF
*3
OFF OFF
OFF OFF
*4
ON ON
⋅
When using the RY, RY2, RUN, RUN2 and RUN3 signals, assign
functions to Pr. 190 to Pr. 196 (output terminal selection function)
referring to the table on the left.
ON
Automatic Restart after
Instantaneous Power Failure
Coasting
Start Start Start
signal is signal is signal is
OFF ON OFF
ON
*2
OFF
OFF
OFF
OFF ON OFF
Restarting
ON
OFF
ON
ON
ON