Omron SX-F, Инструкция по эксплуатации

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95
Main Setup [200]
Section 11-2
Communication information
When the motor has no cooling fan, None is selected and the current level is
limited to 55% of rated motor current.
With a motor with a shaft mounted fan, Self is selected and the current for
overload is limited to 87% from 20% of synchronous speed. At lower speed,
the overload current allowed will be smaller.
When the motor has an external cooling fan, Forced is selected and the over-
load current allowed starts at 90% from rated motor current at zero speed, up
to nominal motor current at 70% of synchronous speed.
Fig. 64 shows the characteristics with respect for Nominal Current and Speed
in relation to the motor ventilation type selected.
Fig. 64 I
2
t curves
Motor Identification Run [229]
This function is used when the VSD is put into operation for the first time. To
achieve an optimal control performance, fine tuning of the motor parameters
using a motor ID run is needed. During the test run the display shows “Test
Run” blinking.
To activate the Motor ID run, select either “Short” or “Extended” and press
Enter. Then press RunL or RunR on the control panel to start the ID run. If
menu [219] Rotation is set to L the RunR key is inactive and vice versa. The
ID run can be aborted by giving a Stop command via the control panel or
Enable input. The parameter will automatically return to OFF when the test is
completed. The message “Test Run OK!” is displayed. Before the VSD can be
operated normally again, press the STOP/RESET key on the control panel.
During the Short ID run the motor shaft does not rotate. The VSD measures
the rotor and stator resistance.
None 0 Limited I
2
t overload curve.
Self 1
Normal I
2
t overload curve. Means that the motor stands
lower current at low speed.
Forced 2
Expanded I
2
t overload curve. Means that the motor stands
almost the whole current also at lower speed.
Modbus Instance no/
DeviceNet no:
43048
Profibus slot/index 168/207
EtherCAT index (hex) 4be8
Fieldbus format UInt
Modbus format UInt
1.00
0.90
0.87
0.55
0.20 0.70 2.00
xSync Speed
xI
nom
for I
2
t
Forced
Self
None