ABB ACH550-UH User Manual page 201

ACH550-UH User's Manual
Analog output control
Using the fieldbus for analog output control requires:
• Drive parameter values set as defined below.
• Fieldbus controller supplied reference word(s) in the appropriate location. (The
location is defined by the Protocol Reference, which is protocol dependent.)
Drive Parameter
1501
0135
1507
0136
PID control setpoint source
Use the following settings to select the fieldbus as the setpoint source for PID loops:
Drive Parameter
4010
4110
4210
Communication fault
When using fieldbus control, specify the drive's action if serial communication is lost.
Drive Parameter
3018
3019
Value
1 135 (
AO CONTENT COMM
1)
SEL VALUE
1 –
COMM VALUE
2 136 (
AO CONTENT COMM
2)
SEL VALUE
2 –
COMM VALUE
Value
8 (
SET POINT COMM
(Set 1) 1)
SEL VALUE
9 ( +
COMM
SET POINT
1)
AI
(Set 2)
SEL
10
SET POINT
( * 1)
COMM AI
(Ext/
SEL
Trim)
0 (
COMM FAULT FUNC NOT SEL
1 (
FAULT
2 (
CONST SP
3 (
LAST SPEED
Set time delay before acting on a communication loss.
COMM FAULT TIME
Setting
ABB
DRV
Analog Output 1
controlled by
writing to
parameter 0135.
Analog Output 2
controlled by
writing to
parameter 0136.
Setting
Setpoint is either:
• Input Reference 2 (+/
-/* AI1). Control
requires parameter
1106 value = comm.
• Process PID
setpoint. Control
requires parameter
1106 value = pid1
out and parameter
4010 value = comm.
Value
) Set for appropriate drive response.
)
7)
)
Protocol Reference
Modbus
N2 FLN BACnet
DCU
PROFILE
– – –
40135 AO14 46
– – –
40136 AO15 47
Protocol Reference
Modbus
N2 FLN BACnet
ABB DCU
DRV PROFILE
40003 AO2 61
Description
Embedded fieldbus
1-197
–
AO0
–
AO1
AV17