Omron VARISPEED F7 User Manual

6-32
6
Speed Limit (Frequency Reference Limits)
 Limiting the Maximum Output Frequency
If the motor is not allowed to rotate above a certain frequency, use parameter d2-01 to set a frequency refer-
ence upper limit.
The limit value is set as a percentage, taking E1-04 (Maximum Output Frequency) to be 100%.
Related Parameters
 Limiting the Minimum Output Frequency
If the motor is not allowed to rotate below a certain frequency, use parameters d2-02 or d2-03 to set a fre-
quency reference lower limit.
There are two methods of limiting the minimum frequency, as follows:
• Set d2-02 to adjust the minimum level for all frequencies.
• Set d2-03 to adjust the minimum level for the master speed frequency (i.e., the lower level is not valid for
the jog frequency, multi-step speed frequency, and auxiliary frequency).
Related Parameters
Adjusting Frequency Lower Limit Using an Analog Input
If parameter H3-09 (analog input A2 function selection) is set to 9 (output frequency lower level), the fre-
quency lower level can be adjusted using the terminal A2 input level (see Fig 6.38).
Fig 6.38 Analog Input A2 Characteristics for Frequency Reference Lower Limit
If parameter d2-02 and terminal A2 output frequency lower level have been set at the same time, the larger set
value will become the frequency lower limit.
Parameter
No.
Name
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f with
PG
Open
Loop
Vector
Closed
Loop
Vector
d2-01 Frequency reference upper limit 100.0% No A A A A
Parameter
No.
Name
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f with
PG
Open
Loop
Vector
Closed
Loop
Vector
d2-02 Frequency reference lower limit 0.0% No A A A A
d2-03 Master speed reference lower limit 0.0% No A A A A
0 V
(4 mA)
10 V
(20 mA)
Output frequency lower level
Max. output frequency
E1-04
Multi-function analog input
terminal A2 input level

Omron VARISPEED F7 Specifications

General

Brand	Omron
Model	VARISPEED F7
Category	Inverter
Language	English