Analog Command Holding Function (Ahd) (C101,C001 To C005) - Hitachi NES1-004SB Quick Reference Manual

7.4.3 Analog command holding function (AHD)
- The analog command holding function allows you to make the inverter hold the analog command input
via the external analog input terminal when the AHD terminal is on.
- While the AHD terminal is on, the up/down function can be used based on the analog signal held by this
function as reference data.
- When "01" is specified for Up/Down memory mode selection (C101), the result of up/down processing
can be stored in memory.
- If the inverter power is turned on or the RS terminal turned off with the AHD terminal left turned on, the
data held immediately before power-on or turning off the RS terminal will be used.
Item
Terminal [1] to [5] functions
AHD terminal
Input analog command
Frequency command
7.4.4 Analog Input Adjustment [C081/C082]
This function can change the gain of the analog input. Please use the fine adjustment of the analog input
signal. Please refer to "7.4.5" for the scale transformation.
Item
O/OI input span calibration
Function code
C001 to C005
Function code Range of data
C081 0. to 200.0(%)
Frequency setting
Maximum frequency
200%
0
0V, 0mA
Chapter 7 Explanation of Functions
Data
65 AHD: Analog command holding
ON
This function will fine-tune the gain for the input
voltage.
100%
50%
5V, 10mA 10V, 20mA
7 - 17
Description
Note)
Set frequency remains when inverter
is switched with SET terminal with
AHD on. Turn AHD terminal off to
re-hold the set frequency.
Description