ABB DriveIT ACH550-UH - Page 117

ACH550-UH User’s Manual 117
Start-Up
4008 0 % VALUE -1000.0…1000.0% 0.1% 0.0%
Defines (together with the next parameter) the scaling applied to the
PID controller’s actual values (PID1 parameters 0128, 0130, and
0132).
• Units and scale are defined by parameters 4006 and 4007.
4009 100 % VALUE -1000.0…1000.0% 0.1% 100.0%
Defines (together with the previous parameter) the scaling applied to the PID controller’s actual values.
• Units and scale are defined by parameters 4006 and 4007.
4010 SET POINT SEL 0…19 1 1 9
Defines the reference signal source for the PID controller.
• Parameter has no significance when the PID regulator is by-passed (see 8121
REG BYPASS CTRL).
0 =
KEYPAD – Control panel provides reference.
1 =
AI1 – Analog input 1 provides reference.
2 =
AI2 – Analog input 2 provides reference.
8 =
COMM – Fieldbus provides reference.
9 =
COMM + AI1 – Defines a fieldbus and analog input 1 (AI1) combination as the reference source. See Analog Input
Reference Correction below.
10 = COMM * AI1 – Defines a fieldbus and analog input 1 (AI1) combination as the reference source. See Analog
Input Reference Correction below.
11 = DI3U, 4D(RNC) – Digital inputs, acting as a motor potentiometer control, provide reference.
•
DI3 increases the speed (the U stands for “up”)
•
DI4 decreases the reference (the D stands for “down”).
• Parameter 2205
ACCELER TIME 2 controls the reference signal’s rate of change.
• R = Stop command resets the reference to zero.
• NC = Reference value is not copied.
12 =
DI3U, 4D(NC) – Same as DI3U, 4D(RNC) above, except:
• Stop command does not reset reference to zero. At restart the motor ramps up, at the selected acceleration rate,
to the stored reference.
13 =
DI5U, 6D(NC) – Same as DI3U, 4D(NC) above, except:
• Uses digital inputs
DI5 and DI6.
14 =
AI1 + AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See
Analog Input Reference Correction below.
15 =
AI1 * AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See
Analog Input Reference Correction below.
16 = AI1 - AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See
Analog Input Reference Correction below.
17 =
AI1/AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See
Analog Input Reference Correction below.
19 =
INTERNAL – A constant value set using parameter 4011 provides reference.
Group 40: Process PID Set 1
Code Description Range Resolution Default S
Internal scale (%)
P 4009
P 4008
100%
0%
Units (P4006)
Scale (P4007)
-1000%
+1000%