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.
