Simple Position Control Function; Encoder Connection - Omron 3G3MX2 User Manual

5-12 Simple Position Control Function

The following explains the simple position control mode.

Encoder Connection

The hardware specification for pulse train input is described below.
Dual-phase pulse train
input with 90°C phase
difference (P004 = 01, 02)
1-phase pulse train input +
direction (P004 = 03)
1-phase pulse train input
(P004 = 00)
Wire the incremental encoder as shown below when using this function.
Dual-phase Pulse Train
Input the dual-phase pulses to the RP and EB terminals. Since the EB terminal is also used as
multi-function input terminal S7/EB, use all multi-function inputs, including the EB terminal,
based on the source logic (voltage-output encoder or PNP open collector encoder). Also make
sure the input voltage is within the rated range for the multi-function input terminal (18 to 24 V).
Allocate EB to multi-function input terminal S7/EB.
Voltage-output or PNP
open-collector type encoder
Connect the Inverter output terminals (U, V, and W) and the motor input terminals (U, V, and
W) in the correct phase order. In this case, the motor turns forward when a forward command
is applied to the Inverter. Forward is the direction in which the motor shaft turns
counterclockwise when viewed from the load. Reverse is the direction in which the motor shaft
turns clockwise. For the dual-phase pulse on terminals RP and EB, forward is detected when
the pulse on the RP terminal is 90° advanced from the EB terminal, and reverse is detected
when the pulse on the RP terminal is 90° delayed from the EB terminal. Input the encoder
signals so that the RP terminal is 90° advanced from the EB terminal when the motor is turning
forward.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
Maximum
frequency (5 to 24VDC) (32 kHz max.)
Phase-A pulse train
to 1.8 kHz (PNP open-collector or
voltage-output encoder)
1-phase pulse train
to 32 kHz (PNP open-collector or
voltage-output encoder)
1-phase pulse train
to 32 kHz (PNP open-collector or
voltage-output encoder)
Forward:
90 °
advanced
Vcc
A
Encoder
B
GND

5-12 Simple Position Control Function

RP terminal
(24 VDC) (1.8 kHz max.)
Phase-B pulse train
(PNP open-collector or
voltage-output encoder)
Direction signal
(Sink/source transistor or
selector switch)
3G3MX2
P24
510 Ω
RP
3.9 k Ω
6.2 k Ω
5.1 V
S7/EB
4.7 k Ω
PSC
SC
S7/EB terminal
−
5-158
5