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Using Intelligent Input Terminals Section 4-5
4-5-10 Remote Control Up and Down Functions
The [UP] [DWN] terminal functions can adjust the output frequency for remote
control while the motor is running. The acceleration time and deceleration
time of this function is same as normal operation ACC1 and DEC1 (2ACC1,
2DEC1). The input terminals operate according to these principles:
• Acceleration - When the [UP] contact is turned ON, the output frequen-
cy accelerates from the current value. When it is turned OFF, the out-
put frequency maintains its current value at that moment.
• Deceleration - When the [DWN] contact is turned ON, the output fre-
quency decelerates from the current value. When it is turned OFF, the
output frequency maintains its current value at that moment.
In the graph below, the [UP] and [DWN] terminals activate while the Run com-
mand remains ON. The output frequency responds to the [UP] and [DWN]
commands.
It is possible for the inverter to retain the frequency set from the [UP] and
[DWN] terminals through a power loss. Parameter
C101 enables/disables the
memory. If disabled, the inverter retains the last frequency before an UP/DWN
adjustment. Use the [UDC] terminal to clear the memory and return to the
original set output frequency.
Option
Code
Terminal
Symbol
Function
Name
State Description
27 UP Remote
Control UP
Function
(motorized
speed pot.)
ON Accelerates (increases output
frequency) motor from current fre-
quency
OFF Output to motor operates normally
28 DWN Remote
Control
DOWN
Function
(motorized
speed pot.)
ON Decelerates (increases output
frequency) motor from current fre-
quency
OFF Output to motor operates normally
29 UDC Remote
Control Data
Clear
ON Clears the Up/Down frequency
memory
OFF No effect on Up/Down memory
Valid for inputs: C001~C007
Required settings: A001 = 02
Notes:
• This feature is available only when the frequency command source is programmed
for operator control. Confirm A001 is set to 02.
• This function is not available when [JG] is in use.
• The range of output frequency is 0 Hz to the value in A004 (maximum frequency
setting).
• This setting modifies the inverter speed from using F001 output frequency setting
as a starting point.
[UP]
1
0
Motor speed
[DWN]
1
0
t
[FW,RV]
1
0
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