Omron SYSDRIVE 3G3MV SERIES User Manual page 31

Overview
D Output Open-phase Detection
(Parameters: n168, n169; Fault Display: LF)
This function detects open phases between the Inverter output and the motor.
D Ground Fault Detection (Fault Display: GF)
This function detects ground faults between the Inverter output and the motor.
D Load Short-circuit Detection (Fault Display: SC)
Prior to an Inverter output, this function detects whether the output is short-circuited. If short-circuiting
occurs during an output, it detects an overcurrent (oC).
H New Features for All 3G3MV Models
D Communications Error Monitor (Monitor: U-15)
This function displays communications errors that occur during serial communications
(RS-422/RS-485). The errors that are displayed have the same content as the general serial commu-
nications error at register number 003D Hex.
D Pulse Train Frequency Reference Input Filter Constant
(Parameter: n076)
This function sets the primary lag digital filter for pulse train frequency reference inputs.
D Multi-function Analog Inputs (Parameters: n077 to n079)
A function has been added to enable setting the Digital Operator's multi-function analog voltage (cur-
rent) inputs. It can set auxiliary analog inputs such as auxiliary frequency references and frequency
reference bias or gain.
Note If multi-function analog inputs are set for use with PID control, no other multi-function analog input
functions can be set or they will overlap.
H New Features for 3G3MV Series (Software Version 0028 (3.7 kW or
Less) or Higher)
D Operation Continuation Timer Added to the Momentary Power Interruption
Compensation Parameter (n081)
Parameter n081 can be set so that operation will not restart after a power interruption until the RUN
signal is ON for the time specified for the parameter (5 to 100 x 0.1 s). If the parameter is set to 2 (Inverter
restarts when power is restored), operation will recover for all Inverters at the same time, meaning the
power supply capacity must be sufficient for the maximum current. By setting timers to between 0.5 and
10.0 s, differences can be created in the Inverter recovery time to prevent tripping the power supply
breaker, which could happen if all Inverters recovered at the same time.
D Enter Command (Saving Parameters to EEPROM) Operation Selection (n170) To
Enable the Enter Command at Any Time
Previously, operation had to be stopped to use the Enter command to saved changes made to parame-
ters during operation using DeviceNet or RS-422/485 communications. This sometimes caused saving
parameters to be forgotten when a system could not be stopped immediately after changing parame-
ters, causing the need to reset the parameters again when they were lost at the next power interruption
or system shutdown. The new parameter n170 can be set to 1 to enable using the Enter command to
write parameters to EEPROM even during operation.
Chapter 1
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