Remote Control Up And Down Functions - Omron MX2 User Manual

Using Intelligent Input Terminals

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.
Motor speed
1
[UP]
0
1
[DWN]
0
1
[FW,RV]
0
It is possible for the inverter to retain the frequency set from the [UP] and
[DWN] terminals through a power loss. Parameter
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 Terminal
Code Symbol
27
UP Remote
Control UP
Function
(motorized
speed pot.)
28
DWN Remote
Control
DOWN
Function
(motorized
speed pot.)
29
UDC Remote
Control Data
Clear
C001~C007
Valid for inputs:
A001 = 02
Required settings:
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.
Function State
Name
ON Accelerates (increases output
frequency) motor from current fre-
quency
OFF Output to motor operates normally
ON Decelerates (increases output
frequency) motor from current fre-
quency
OFF Output to motor operates normally
ON Clears the Up/Down frequency
memory
OFF No effect on Up/Down memory
Section 4-5
t
C101
enables/disables the
Description
187