Hitachi SJ Series User Manual page 174

Chapter 12
12.4.6 Making command from pulse string
input
Input terminals [A] and [B] of the main body are
used.
Ｑ
• Want to make a frequency command from the
frequency given in a pulse string of the open
collector.
Ａ
• To use the input terminals [A] and [B] of the main
body as a pulse string input frequency command,
set [CA-90] to be 01: command.
• A pulse string given as input to the input terminals
[A] and [B] of the inverter is used.
• A pulse string given as input to the input terminals
[A] and [B] can be used as a frequency command /
PID feedback value in each control mode.
• Set an input pulse frequency that corresponds to
the maximum frequency to the pulse string
frequency scale [CA-92].
• The pulse string input values to the input terminals
[A] and [B] can be monitored with [dA-70].
Parameters (main body)
Item
Main speed command
selection
Pulse string input (main
body) detection target
selection
Pulse string input (main
body) mode selection
Pulse string frequency
(main body) scale
Pulse string frequency
(main body) filter time
constant
Pulse string frequency
(main body) bias size
Pulse string frequency
(main body) upper
detection limit
Pulse string frequency
(main body) lower
detection limit
Monitor (main body)
Item
Pulse string input
monitor (main body)
Parameters Data
[AA101]
[CA-90]
[CA-91]
[CA-92] 0.05~32.00 (kHz)
[CA-93] 0.01~2.00 (sec)
[CA-94] -100.0~100.0(%)
[CA-95] 0.0~100.0 (%)
[CA-96] 0.0~100.0 (%)
Parameters Data
[dA-70] -100.00~100.00(%)
*To give a pulse string input frequency command,
there are two methods. One is to use the main
body's terminals and the other is to use the optional
P1-FB.
！
• Start/End function of analogue input cannot be
used. To limit the pulse string input frequency, use
the pulse string frequency bias size [CA-94], the
pulse string frequency upper detection limit [CA-95],
and the pulse string frequency lower detection limit
[CA-96]
• When the pulse input frequency is below the pulse
string frequency lower detection limit [CA-96], it is
regarded as 0 Hz in the processing.
• Slow start if the pulse string frequency lower
detection limit [CA-96] is set to a high value.
Frequency command from pulse string input
12
(input terminals [A] and [B])
01 Used for frequency command
00 Mode 0: 90° phase difference pulse string
Mode 1: Forward/Reverse rotation command and
01
rotation direction
Mode 2: Forward rotation pulse string and
02
reverse rotation pulse string
Input a pulse string frequency that corresponds to
the maximum frequency.
A filter is applied to the input of the pulse string
frequency.
A bias is applied to the input of the pulse string
frequency.
The output of the pulse string frequency input is
limited.
In outputting the pulse string frequency input,
pulses with the frequency lower than the limit is
set to 0.0%.
The frequency command from the pulse
string input (input terminals A/B) is
displayed.
12-4-5
Inverter Functions
Description
Description