Hitachi SJ7002 Series Instruction Manual page 189

4–28
Using Intelligent Input Terminals
Remote Control
Up and Down
Functions
27=[UP]
Opt. Code
28=[DWN]
and
Symbol
29=[UDC]
Valid for
[1] to [8]
Inputs
A001 = 02;
Required
C101 = 01
(enables
Settings
memory)
Default
Requires
config.
terminal
Force Operation
from Digital
Operator
31
Opt. Code
[OPE]
Symbol
Valid for
[1] to [8]
Inputs
A001,
Required
A002 (set not
Settings
equal to 02)
Default
Requires
config.
terminal
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The [UP] [DWN] terminal functions can adjust the output frequency for remote control while
the motor is running. The acceleration time and deceleration time used with this function is the
same as for normal operation ACC1 and DEC1 (2ACC1,2DEC1). The input terminals operate
as follows:
Symbol Function Name
UP Remote Control UP Function Accelerates (increases output frequency) motor
DWN Remote Control DOWN
Function
UDC Remote Control Data Clear
In the graph below, the [UP] and [DWN] terminals activate while the Run command remains
ON. The output frequency responds to the [UP] and [DWN] commands.
Output
frequency
[UP]
[DWN]
[FW, RV]
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.
This function permits a digital operator interface to override the Run command source setting
(A002) when it is configured for a source other than the operator interface. When the [OPE]
terminal is ON, the operator interface Run command over-rides commands from input termi-
nals (such as [FW], [RV]). The inverter will use the standard output frequency settings to
operate the motor. When the [OPE] terminal is OFF, the Run command operates normally, as
configured by A002.
When changing the [OPE] state during Run Mode (inverter is driving the motor), the inverter
will stop the motor before the new [OPE] state takes effect. If the [OPE] input turns ON and the
digital operator gives a Run command while the inverter is already running, the inverter stops
the motor. Then the digital operator can control the motor.
Description
from current frequency
Decelerates (decreases output frequency) motor
from current frequency
Clears the Up/down frequency memory
t