94 G7 ASD Operation Manual
Frequency Mode #2
Program ⇒ Fundamental Parameters ��� Standard Mode Selection
This parameter selects the source of the frequency command signal to be used
as Frequency Mode #2 in the event that Frequency Mode #1 is disabled or if
Frequency Mode #2 is set up as the primary control parameter. See F004 and
F200 for additional information on this setting.
Settings:
Use VI/II
Use RR
Use RX
Use Option Card RX2
Use LED Keypad Option
Use Binary/BCD Input
Use Common Serial ( TTL)
Use RS232/RS485
Use Communication Card
Use Motorized Pot. Simulati on
Use Pulse Input Option
Direct Access Number — F207
Parameter Type — Selection List
Factory Default — VI/II
Changeable During Run — Yes
Mode #1/#2 Switching Frequency
Program ⇒ Fundamental Parameters ⇒ Standard Mode Selection ⇒
Mode #1/#2 Switching Frequency
This parameter sets th e threshold frequency that will be used in F200 to
determine if Frequency Source #1 or #2 will control the output of the ASD.
See F200 for additional informa tion on this settin g.
Direct Access Number — F208
Parameter Type — Numeri cal
Factory Default — 1.0
Changeable During Run — Yes
Minimum — 0.1
Maximum — Max. Freq. (F011)
Units — Hz
Analog Input Filter
Program ⇒ Frequency Setting Parameters ⇒ Analog Filter
Analog filtering is applied after the analog reference signal is convert ed to a
digital signal. The type of filtering used is Rolling Average over time.
Settings:
None
Small
Medium
Large
The analog input signal is sampled and converte d to a digital signal. With no
filtering applied, the digital value from the conversion is scaled for use by the
microprocessor of the ASD.
If the filtering selection is Small, the ASD averages the last 5 sampled (digital )
values. The rolling average is updated (every 4 µS) and scaled for use by the
microprocessor.
If the filtering selection is Medium, the AS D ave r ages the last 20 sampled
(digital) values. The rolling average is updated (every 4 µS) and scaled for use
by the microprocessor.
If the filtering selection is Large, the ASD averages the last 50 sampled
(digital) values. The rolling average is updated (every 4 µS) and scaled for use
by the microprocessor.
False responses to electrical nois e are eliminated with no loss in bandwidth
because the value used by the drive is the average value of several samples.
Direct Access Number — F209
Parameter Type — Selection List
Factory Default — None
Changeable During Run — Yes
F207 F209