ABB ACS550-01 - Page 77

ACS550 User’s Manual 77
Start-Up
1104 REF1 MIN
Sets the minimum for external reference 1.
• The minimum analog input signal (as a percent of
the full signal in volts or amps) corresponds to
REF1
MIN in Hz/rpm.
• Parameter 1301 MINIMUM AI1 or 1304 MINIMUM AI2
sets the minimum analog input signal.
• These parameters (reference and analog min. and
max. settings) provide scale and offset adjustment
for the reference.
1105 REF1 MAX
Sets the maximum for external reference 1.
• The maximum analog input signal (as a percent of
full the signal in volts or amps) corresponds to
REF1
MAX in Hz/rpm.
• Parameter 1302 MAXIMUM AI1 or 1305 MAXIMUM AI2
sets the maximum analog input signal.
1106 REF2 SELECT
Selects the signal source for external reference REF2.
0…17 – Same as for parameter 1103 REF1 SELECT.
19 = PID1OUT – The reference is taken from the PID1 output. See Groups 40 and 41.
1107 REF2 MIN
Sets the minimum for external reference 2.
• The minimum analog input signal (in volts or amps) corresponds to REF2 MIN in %.
• Parameter 1301 MINIMUM AI1 or 1304 MINIMUM AI2 sets the minimum analog input signal.
• This parameter sets the minimum frequency reference.
• The value is a percentage of the:
– maximum frequency or speed.
– maximum process reference
– nominal torque
1108 REF2 MAX
Sets the maximum for external reference 2.
• The maximum analog input signal (in volts or amps) corresponds to REF2 MAX in Hz.
• Parameter 1302 MAXIMUM AI1 or 1305 MAXIMUM AI2 sets the maximum analog input signal.
• This parameter sets the maximum frequency reference.
• The value is a percentage of the:
– maximum frequency or speed
– maximum process reference
– nominal torque
Ext ref
Analog
P 1105
P 1104
P 1301
P 1302
input signal
P 1301
P 1302
input signal
Analog
Ext ref
or 1304
or 1305
or 1304
or 1305
(
MAX)
(MIN)
P 1105
P 1104
(
MAX)
(
MIN)
19=PID1
1…17
REF2
SELECT
LIMIT
MAX (1107, 1108)
MIN (1107, 1108)
PFC
If PFC is used