IMPULSE®•G+ & VG+ Series 4 Instruction Manual – February 2017
5-5
Reference Limits
These parameters limit the frequency range as a percentage of maximum output frequency (E01-
04). If the lower limit is below the DC Inj Start Freq (D01-01), then operation will continue according
to B03-05.
An alternate upper limit frequency can be used during operation when a Multi-Function Digital Input
(MFDI) is set to 59 (Alt F-Ref Up Lmt) and the MFDI is on.
Table 5-3: Reference Limit Parameter Settings
Figure 5-1: Setting Frequency Upper and Lower Limits
Parameter Display Function Range Default
B02-01 Ref Upper Limit Sets as a percentage of the
maximum output frequency (E01-
04), which determines the
maximum frequency at which the
drive is able to run.
0.0–110.0% 100.0*
B02-02 Ref Lower Limit Sets as a percentage of the
maximum output frequency (E01-
04), which determines the
minimum master frequency
reference only.
0.0–110.0% 0.0
B02-03 Ref1
Lower Limit
Sets as a percentage of the
maximum output frequency (E01-
04), which determines the
minimum frequency at which the
drive is able to run.
0.0–110.0% 2.0*
B02-04 Alt Upper Limit Alternate of B02-01 set by
MFDI=59.
0.0–110.0% 0.0
* Initial value is determined by X-Press Programming (Table 4-6, 4-7, or 4-8 on pages 4-12, 4-13, and 4-14).
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