Chapter 6 – Parameters
6-38 ACH 500 Programming Manual
5 UNDERVOLTAGE
If you select YES, the ACH 500 resumes operation when the DC bus voltage
returns to normal level. If the number of reset attempts is set to 0 and this
parameter is set to YES, the drive will always reset in an undervoltage
condition. If the number of reset attempts is greater than 0, the drive counts
the number of undervoltage faults.
6 OVERCURRENT
If you select YES, the fault resets automatically and the ACH 500 resumes
normal operation.
7 AI SIGNAL < MIN
If you select YES, the drive resets when the analog input signal returns to a
level above the minimum.
Group 30.3
Supervision
These parameter values can be altered with the ACH 500 running. The Range/
Unit column in Table 6-18 shows parameter values. The text following the
table explains parameter values in detail.
Table 6-18 Group 30.3
Parameter Range/Unit Description
1 OUTPUT FREQ 1 FUNC NO/LOW LIMIT/
HIGH LIMIT
Output Frequency 1 supervision.
2 OUTPUT FREQ 1 LIM 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Output Frequency 1 supervision
limit.
3 OUTPUT FREQ 2 FUNC NO/LOW LIMIT/
HIGH LIMIT
Output Frequency 2 supervision.
4 OUTPUT FREQ 2 LIM 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Output Frequency 2 supervision
limit.
5 CURRENT FUNCTION NO/LOW LIMIT/
HIGH LIMIT
Motor Current supervision.
6 CURRENT LIMIT 0 – 2 times drive
output current
Motor Current supervision limit.
7 REF1 FUNCTION NO/LOW LIMIT/
HIGH LIMIT
Reference 1 supervision.
8 REF1 LIMIT 0 – 500 Hz (ACH 501)
0 – 120 Hz (ACH 502)
Reference 1 supervision limit.
9 REF2 FUNCTION NO/LOW LIMIT/
HIGH LIMIT
Reference 2 supervision.
10 REF2 LIMIT 0 – 100% Reference 2 supervision limit.
11 SUPERVIS
MESSAGES
ON/OFF Turn off display of supervision
messages.