ABB ACS550-02 User Manual page 60

58
Application Macro: PID Control
This macro provides parameter settings for closed-loop control systems such as
pressure control, flow control, etc. To enable, set the value of parameter 9902 to 6
(
PID CTRL
Note! Parameter 2108
Connection example:
X1
• Analog reference (AI1)
• Actual value (AI2)
• Start/stop – hand/PID (DI1, 6)
• EXT1/EXT2 selection (DI2)
• Constant speed selection (DI3, 4)
• Run enable (DI5)
Start-Up
).
START INHIBIT
X1
Signal cable shield (screen)
1 SCR
2 AI1 External ref. 1 (Manual) or Ext ref. 2 (PID): 0
Analog input circuit common
3 AGND
Reference voltage 10 VDC
4 10V
5 AI2
Actual signal (PID): 0
6 AGND Analog input circuit common
7 AO1 Motor output speed: 0
8 AO2 Output current: 0
9 AGND Analog output circuit common
Auxiliary voltage output +24 VDC
10 24V
Common for DI return signals.
11 GND
Digital input common for all
12 DCOM1
13 DI1
Start/Stop (Hand): Activation starts the drive.
14 DI2
EXT1/EXT2 selection: Activation selects PID control.
15 DI3
Constant speed selection 1: (Not used in PID control)
16 DI4
Constant speed selection 2: (Not used in PID control)
17 DI5 Run enable: Deactivation always stops the drive
18 DI6
Start/Stop (PID): Activation starts the drive.
19 RO1C
Relay output 1, programmable
Default operation:
20 RO1A
Ready =>19 connected to 21
21 RO1B
22 RO2C
Relay output 2, programmable
Default operation:
23 RO2A
Running =>22 connected to 24
24 RO2B
25 RO3C
Relay output 3, programmable
26 RO3A Default operation:
Fault (-1) =>25 connected to 27
27 RO3B
(Fault => 25 connected to 26)
Input signals
must remain in the default setting, 0 (
Note 1.
Manual: 0
...
20 mA
PID: 0
setpoint
...
20 mA
...
20 mA
Note 2. Code:
0 = open, 1 = connected
0
1
0
1
Output signals
• Analog output AO1: Speed
• Analog output AO2: Current
• Relay output 1: Ready
• Relay output 2: Running
• Relay output 3: Fault (-1)
OFF
1
...
10 V
...
10V => speed reference
... ...
10V => 0 100% PID
2
2
DI3 DI4 Output
0 Reference through AI1
0 1 (1202)
CONSTANT SPEED
1 2 (1203)
CONSTANT SPEED
1 3 (1204)
CONSTANT SPEED
Jumper Setting
J1
...
AI1: 0 10 V
...
AI2: 0(4)
).
20 mA