Commercial Switch - Omron 3G3MX2 User Manual

Using Intelligent Input Terminals
4-5-6

Commercial switch

mand per this example (or applying a reset). Then the Run command can turn
ON again and start the inverter output.
1
Run command [FW,RV]
0
1
[USP] terminal
0
1
Alarm output terminal
0
Inverter output frequency
0
1
Inverter power supply
0
Events:
Option Terminal
Code Symbol

USP Unattended
Start
Protection
~
Valid for inputs:
Required settings: (none)
Notes:
• Note that when a USP error occurs and it is canceled by a reset from a [RS] termi-
nal input, the inverter restarts running immediately.
• Even when the trip state is canceled by turning the terminal [RS] ON and OFF after
an under voltage protection  occurs, the USP function will be performed.
• When the running command is active immediately after the power is turned ON, a
USP error will occur. When this function is used, wait for at least 3 seconds after
the powerup to generate a Run command.
The commercial power source switching function allows you to switch the
power supply (between the inverter and commercial power supply) to your
system of which the load causes a considerable moment of inertia. You can
use the inverter to accelerate and decelerate the motor in the system and the
commercial power supply to drive the motor for constant speed operation.
To use this function, assign parameter "

terminal [1] to [7] ( to
command is being given, the inverter waits for the retry wait time before motor

starts ( ), adjusts the output frequency to the speed of the free-running
motor, and then accelerates the motor with the adjusted frequency.
Mechanically interlock the MC3 and MC2 contacts with each other. Otherwise
you may damage the drive.
If the earth leakage
breaker (ELB) trips
because of a ground
fault, the commercial
power will be disabled.
Therefore, contact a
backup power supply
from the commercial
power line circuit
(ELBC) to your sys-
tem if needed.
Alarm Run
E13
cleared command
Function State
Name
ON On powerup, the inverter will not
resume a Run command
OFF On powerup, the inverter will
resume a Run command that was
active before power loss

(CS)" to one of the intelligent input

). When the CS is turned OFF with an operation
ELBC
NFB
MC1
R
S
T
FW Y FW
RVY RV
CSY CS
L
Section 4-5
t
Description
MC2
THRY
MC3
MX2
U
Moto r
V
W
209