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6 Basic Parameter Settings
High-function General-purpose Inverter RX2 Series User’s Manual
6-4 Frequency Command Settings
6
6-4-5 Case where Command Is Given through Input of Pulse String
c) Mode 2: [CA-91]=02 Forward rotation pulse string + reverse rotation pulse string
Precautions for Correct Use
Your setting must be in accordance with the pulse string input to use. Make sure to set the
proper pulse string input (the inverter) mode selection: [CA-91]. If your setting is incorrect, the
motor could make reverse rotations or other unintended movements.
When you use the pulse string that is input in [SAP][SBP][SAN][SBN] of PG option unit as a frequency
command, set main speed input source selection, 1st-motor [AA101] to 13 (Pulse string input: Option)
and set Pulse train detection object selection [ob-10] to 00 (Pulse train detection object selection).
A pulse string given as input to PG option unit 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 [ob-12].
The pulse string input values to PG option unit can be monitored with [dA-71].
Precautions for Correct Use
• Start/End function of analog input cannot be used. To limit the pulse string input frequency,
use the pulse string frequency bias size [ob-14], the pulse string frequency upper detection
limit [ob-15], and the pulse string frequency lower detection limit [ob-16]
• When the pulse input frequency is below the pulse string frequency lower detection limit
[ob-16], it is regarded as 0 Hz in the processing.
• Slow start if the pulse string frequency lower detection limit [ob-16] is set to a high value.
Case where Command Is Given with PG Option Unit
Time
Number of
detected pulses
Terminal
[B]
Terminal
[A]
Forward rotation
pulse string input
Reverse rotation
pulse string input
Positive (+)
Negative (-)
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