Mitsubishi Electric FR-F820-00046 Instruction Manual page 337

Fr-f800 series
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Output frequency
-5 V
-2.5 V
(-10 V)
(-5 V)
STF Signal
ON
Forward rotation
STF Signal
ON
(a) When Pr.73 setting is 0 to 3
NOTE
• After changing the Pr.73 setting, check the setting of the voltage/current input selection switch. Incorrect setting may cause a
fault, failure, or malfunction. (Refer to
 Override function (Pr.252, Pr.253)
Forward
rotation
Override
setting
Main
(+)
speed
(-)
Connection example for the
override function
• Use the override function to make the main speed changed at a specified rate.
• Set "4, 5, 14, or 15" in Pr.73 to select the override function.
• When the override function is selected, terminal 1 or 4 is used for the main speed setting, and terminal 2 is used for the
override signal. (If the main speed signal is not input through terminal 1 or 4, the compensation by terminal 2 is disabled.)
• Specify the scope of override by using Pr.252 and Pr.253.
• How to calculate the set frequency when the override function is used:
Main speed setting frequency (Hz): Terminals 1 or 4 input, multi-speed setting
Compensation (%): Terminal 2 input
Set frequency (Hz) = Main speed setting frequency (Hz) ×
336
5. PARAMETERS
5.9 (T) Multi-function input terminal parameters
When voltage across
terminals 2 and 5 is 2.5 V
(5 V)
When voltage
across terminals
2 and 5 is 0 V
0
+2.5 V
+5 V
Terminal 1
(+5 V)
(+10 V)
Forward rotation
STF Signal
ON
STF Signal
ON
Auxiliary input characteristics
page 330
Inverter
STF
SD
10
2
5
1
Output frequency
0
-5 V
-2.5 V
+2.5 V
(-10 V)
(-5 V)
(+5 V)
Reverse rotation
Forward rotation
Reverse rotation
Forward rotation
(b) When Pr.73 setting is 10 to 13
for the setting.)
Compensation (%)
100(%)
When voltage across
terminals 2 and 5 is 2.5 V
(5 V)
When voltage
across terminals
2 and 5 is 0 V
+5 V
Terminal 1
(+10 V)

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