Omron RX Series - Page 303

6 - 35
6 Vector Control
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
6-6 Pulse Train Position Control Mode
6
6-6-1 Pulse Train Position Control Mode Settings
Precautions for Correct UsePrecautions for Correct Use
To provide pulse train position control via an OMRON Programmable Controller, use the Position
Control Unit (Model: CJ1W-NC3/CS1W-NC3).
After connecting the unit, set the Pulse Train Input Selection (P013) to 01 (Mode 1:
Forward/Reverse command + pulse train) on the inverter and then perform the pulse/direction
output setting on the Position Control Unit.
Note that setting P013 to 02 (Mode 2: Forward/pulse train + Reverse pulse train) cannot
establish connection.
The frequency reference for the pulse train position control mode is calculated from the following
formula:
In the position control mode, the acceleration/deceleration time settings are disabled. (The state will be
the LAD cancel automatically.)
The higher the position loop-back gain, the shorter the acceleration/deceleration time.
For details on the pulse train input mode, refer to the following figures.
• Mode 0: 90°phase difference pulse train
• Mode 1: Forward/Reverse command + pulse train
P: Number of motor poles
Kv: Position loop gain
ENC:Number of encoder pulses
P: Position deviation
×
P
255
Frequency reference [Hz] =
6.4 x P x Kv
ENC
SAP
SAN
SBP
SBN
(Pulse train input)
Detected
pulses
Time
(Pulse train input)
Forward Reverse
Time
Forward Reverse
SAP
SAN
SBP
SBN
(Pulse train input)
Detected
pulses
(Forward/Reverse
command)