Omron MX2 Series User Manual

6 Vector Control and Applied Functions
6 - 19
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
⚫ Details of Pulse Train Input Type Selection (P004)
The Pulse Train Input Type Selection (P004) setting causes the inverter to recognize the feedback
rotation direction as shown below.
Pulse Train Input Type
Selection (P004) setting
RUN command
*1
Multi-function
Input 7
Terminal EB
Recognized feedback rotation
direction
Forward
Reverse
00: Single-phase pulse train
ON
OFF
−
Forward
*2
OFF
ON
−
Reverse
*2
01: Phase A and B 90°
phase difference pulse train
Forward or
Reverse is ON
−
Detects encoder rotation (90° phase dif-
ference).
03: Single-phase pulse train
+ direction
Forward or
Reverse is ON
OFF
Forward rotation (Follows terminal EB)
ON
Reverse rotation (Follows terminal EB)
*1. When both the forward RUN command and the reverse RUN command are ON or OFF, the inverter does
not start its output.
*2. The inverter recognizes the rotation direction via RUN command input because it cannot recognize the ro-
tation direction by the single-phase pulse train.
However, if the RUN command is switched during operation, the inverter retains the rotation direction before
the switching until its output frequency causes a deceleration stop and then switches to the rotation direction
recognized via RUN command input.
6-5-2 Recommended Encoder and Its Wiring
For the pulse train input function of the 3G3MX2-EV2 Series Inverter, be sure to use a
complemen- tary-output type encoder.
In addition, for encoder cable connection, always use a shielded cable and connect it to the terminal L of
the inverter’s control circuit terminal block.
If an open-collector output encoder is used, the inverter may not recognize the rotation in the forward or
reverse direction. This is because, as the length of the encoder cable increases, its stray capacitance
becomes larger, which causes the inverter to falsely recognize the crosstalk signal from the encoder.
⚫ Complementary output
Complementary output is a method to output via two tran-
sistors.
The wiring is connected to the 0-V side when output is ON
and to the power-supply side when output is OFF.
This design does not allow the wiring to be left open (at high
impedance) as with the case of open-collector output
encoders.
Therefore, this provides a stable output from the encoder.
NPN
Transistor
PNP
Transistor
E6C3-CWZ5GH
Power
6
6-5 V/f Control with Speed Feedback
6-5-2 Recommended Encoder and Its Wiring

Omron MX2 Series Specifications

General

Brand	Omron
Model	MX2 Series
Category	Inverter
Language	English