ABB ACH 501 - Group 20.5 Crit Frequencies

Chapter 6 – Parameters
6-28 ACH 500 Programming Manual
Group 20.5
Crit Frequencies
These parameter values can be altered with the ACH 500 running. The Range/
Unit column in Table 6-14 shows parameter values. The text following the
table explains parameter values in detail.
Table 6-14 Group 20.5
Parameter Range/Unit Description
1 CRIT FREQ SELECT OFF/ON Critical frequency jump over
logic.
2 CRIT FREQ 1 LOW 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 1 start.
3 CRIT FREQ 1 HIGH 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 1 end.
4 CRIT FREQ 2 LOW 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 2 start.
5 CRIT FREQ 2 HIGH 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 2 end.
6 CRIT FREQ 3 LOW 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 3 start.
7 CRIT FREQ 3 HIGH 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 3 end.
8 CRIT FREQ 4 LOW 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 4 start.
9 CRIT FREQ 4 HIGH 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 4 end.
10 CRIT FREQ 5 LOW 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 5 start.
11 CRIT FREQ 5 HIGH 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Critical frequency 5 end.