Mitsubishi Electric FR-A700 Instruction Manual page 179

Basic settings
Power on → operation mode check
For the initial setting, the inverter operates in the
external operation mode "EXT" when powering
on. Check that the operation command indication
is "EXT". If not displayed, press the PU/EXT key
to change to the external "EXT" operation mode.
If the operation mode still does not change, set
Pr. 79 to change to the external operation
mode. (Refer to section 5.1.6.)
Turn the start signal STF or STR on. Operation
status indication FWD or REV flickers.
CAUTION:
When both the forward and reverse signal are
turned on, the inverter will not start. Also, if
both
switches turned while running, the inverter
stops.
Acceleration → constant speed
Perform 20mA input. The frequency value on the
indication increases according to Pr. 7
"Acceleration time" until 50.00Hz is displayed.
Deceleration
Perform 4mA input. The frequency value on the
indication decreases according to Pr. 8
"Deceleration time" until 0.00Hz is displayed
and FWD or REV of the operation status indication
flickers.
The motor stops.
Stop
Turn the start switch STF or STR off.
Fig. 5-35: Operate the inverter by using the analog current input
NOTE Pr. 184 "AU terminal function selection" must be set to "4" (AU signal) (initial value).
Possible faults:
● The motor will not rotate.
– Check that the EXT lamp is lit. The external operation mode is valid when Pr. 79 = 0
(initial value) or "2". Use the PU/EXT key to change into the external operation mode.
– The AU signal must be turned on.
– Check that wiring is correct. Check once again.
NOTE Change the frequency (0Hz) of the minimum value of potentiometer (at 4mA, initial value) by
adjusting the frequency in calibration parameter C5 "Terminal 4 frequency setting bias fre-
quency". (Refer to section 6.20.5.)
FR-A700 EC
Operation
ON
Forward
Reverse
rotation
rotation
ON
Output of the
adjustment meter
(4 to 20mADC)
Output of the
adjustment meter
(4 to 20mADC)
Forward
rotation
Reverse
rotation
OFF
External operation
Display
blinkt
Flickering
Stop
I001095E
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