Hitachi SJ100 Instruction Manual page 140

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]
[DWN]
[FW], [RV]
Option Terminal
Code Symbol
27 UP Remote Control
UP Function (motor-
ized speed pot.)
28 DWN Remote Control
DOWN Function
(motorized speed
pot.)
C_01, C_02, C_03, C_04,
Valid for inputs:
C_05, C_06
A_01 = 02
Required settings:
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
0
1
0
1
0
Input
Function Name
State
ON
OFF
ON
OFF
SJ100 Inverter
Description
Accelerates (increases output frequency) motor
from current frequency
Output to motor operates normally
Decelerates (decreases output frequency) motor
from current frequency
Output to motor operates normally
Example (requires input configuration—
see page 3–34):
DWN UP
L 6 5 4
See I/O specs on page 4–6.
4–23
t
3 2 1 P24