Omron SX-F, Инструкция по эксплуатации

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184
Load Monitor and Process Protection [400]
Section 11-4
Communication information
Note The speed values depend on the Min- and Max Speed values. they are read
only and cannot be changed.
Fig. 93
11-4-2 Process Protection [420]
Submenu with settings regarding protection functions for the VSD and the
motor.
Low Voltage Override [421]
If a dip in the mains supply occurs and the low voltage override function is
enabled, the VSD 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 com-
bination and the load of the motor at the time the dip occurs, see Fig. 94.
Modbus Instance no/
DeviceNet no:
43336%, 43337 rpm, 43338%, 43339 rpm, 43340%, 43341
rpm, 43342%, 43343 rpm, 43344%, 43345 rpm, 43346%,
43347 rpm, 43348%, 43349 rpm, 43350%, 43351 rpm,
43352%, 43353 rpm
Profibus slot/index
169/240, 169/242, 169/244, 169/246, 169/248, 169/250,
169/252, 169/254, 170/1
EtherCAT index (hex)
4d08%, 4d09 rpm, 4d0a%, 4d0b rpm, 4d0c%, 4d0d rpm,
4d0e%, 4d0f rpm, 4d10%, 4d11 rpm, 4d12%, 4d13 rpm,
4d14%, 4d15 rpm, 4d16%, 4d17 rpm, 4d18%, 4d19 rpm
Fieldbus format Long
Modbus format EInt
0 0.2 0.4 0.6 0.8 1
0
0.5
1
Min Speed
Speed
Max Speed
Min-Max alarm tolerance band graph
Measured load samples
Min-max tolerance band
Max alarm limit
Min alarm limit
Default: On
Off 0 At a voltage dip the low voltage trip will protect.
On 1 At mains dip, VSD ramps down until voltage rises.
421 Low Volt OR
Stp
On
A