Hitachi SJ100 - Manual (Page 140)

SJ100 Inverter
Oper
ations
and Monitor
ing
4–23
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 frequency accelerates
from the current value. When it is turned OFF, the output frequency maintains its
current value at that moment.
• Deceleration - When the [DWN] contact is turned ON, the output frequency deceler-
ates 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 command
remains ON. The output frequency responds to the [UP] and [DWN] commands.
Output
frequency
[UP]
[FW], [RV]
[DWN]
1
0
t
1
0
1
0
Option
Code
Terminal
Symbol
Function Name
Input
State
Description
27 UP Remote Control
UP Function (motor-
ized speed pot.) ON Accelerates (increases output frequency) motor
from current frequency
OFF Output to motor operates normally
28 DWN Remote Control
DOWN Function
(motorized speed
pot.) ON Decelerates (decreases output frequency) motor
from current frequency
OFF Output to motor operates normally
Valid for inputs:
C_01, C_02, C_03, C_04,
C_05, C_06
Required settings: A_01 = 02
Notes:
•
This feature is available only when the frequency
command source is programmed for operator
control. Confirm A_01 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 A_04 (maximum frequency setting).
• The minimum ON time of [UP] and [DWN] is 50 ms.
• This setting modifies the inverter speed from using F_01 output frequency setting as a starting point.
1 2 3 4 5 6 L P24
Example (requires input configuration—
see page
3–34 ):
See I/O specs on page 4–6 .
DWN UP