BENSHAW Rsi S Series, Инструкция по эксплуатации

Страница: 186 / 398

Learning Advanced Features
174
Code Description
for the idling motor at low speed (about 10 - 15
Hz, though it depends on motor
characteristics).
2 Flying Start-3 This speed search is available when operating a
PM synchronous motor. It is used when dr.09
(Control Mode) is set to 6 (PM Sensorless).
Cn.71 Speed Search
Speed search can be selected from the following 4 options. If the top
display segment is on it is enabled (On), and if the bottom segment is on
it is disabled (Off).
Item Bit Setting On Status Bit setting Off Status
Keypad
LCD keypad
Type and Functions of Speed Search Setting
Setting Function
bit4 bit3 bit2 bit1
Speed search for general
acceleration
Initialization after a fault
Restart after instantaneous
power interruption
Starting with power-on
•
Speed search for general acceleration : If bit 1 is set to 1 and a start
command is applied to the inverter, acceleration starts with speed
search operation. The speed search function prevents faults from
occurring when a start command is applied and the motor is still
rotating.
•
Initialization after a fault : If Bit 2 is set to 1 and Pr.08 (RST Restart) is
set to 1 (Yes), when a fault reset is performed (keypad or digital
input), the speed search operation automatically accelerates the
motor to the operation frequency used before the fault.
•
Automatic restart after reset of a fault : If bit 3 is set to 1, and if a
low voltage trip occurs due to a power interruption but the power is
restored before the internal power shuts down, the speed search
operation accelerates the motor back to its frequency reference
before the low voltage trip.
If an instantaneous power interruption occurs and the input power is