CG Emotron VFX Series, Инструкция по эксплуатации

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164 CG Drives & Automation, 01-5326-01r5
Minimum Absolute Margin [41D]
This menu is displayed when using “Load Curve R”
Set absolute minimum margin of the Load Curve in % of
nominal motor torque.
Communication information
11.6.2 Process Protection [420]
Submenu with settings regarding protection functions for
the AC drive and the motor.
Low Voltage Override [421]
If a dip in the mains supply occurs and the low voltage
override function is enabled, the AC drive will automatically
decrease the motor speed to keep control of the application
and prevent an under voltage trip until the input voltage
rises again. Therefore the rotating energy in the motor/load
is used to keep the DC link voltage level at the override level,
for as long as possible or until the motor comes to a
standstill. This is dependent on the inertia of the motor/load
combination and the load of the motor at the time the dip
occurs, see Fig. 125.
Communication information
Fig. 125 Low voltage override
41D MinAbsMarg
Default: 3 %
Range: 0 - 31 %
Modbus Instance no/DeviceNet no: 43354
Profibus slot/index 170/3
EtherCAT and CANopen index (hex) 4d1a
Profinet IO index 19738
Fieldbus format Long, 1 = 1%
Modbus format EInt 421 Low Volt OR
Default: On
Off 0
At a voltage dip the low voltage trip will
protect.
On 1
At mains dip, AC drive ramps down until
voltage rises.
Modbus Instance no/DeviceNet no: 43361
Profibus slot/index 170/10
EtherCAT and CANopen index (hex) 4d21
Profinet IO index 19745
Fieldbus format UInt
Modbus format UInt
NOTE: During the low voltage override the LED trip/
limit blinks.
t
t
(06-F60new)
Override
level
Low Volt.
level
Speed
DC link voltage