ABB ACH550-UH User Manual page 499

Ach550 series, hvac drives (1...550 hp), e-clipse bypass drives (1...400 hp), packaged drives with disconnect (1...550 hp)
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ACH550 E-Clipse Bypass User's Manual
Activate drive control functions
Controlling the drive
Fieldbus control of various drive functions requires configuration to:
• Tell the drive to accept fieldbus control of the function.
• Define as a fieldbus input, any system data required for control (drive only or
system)
• Define as a fieldbus output, any control data required by the drive.
The following sections describe the configuration required for each control function.
Note: The user should change only the parameters for the functions you wish to
control via BACnet. All other parameters should typically remain at factory default.
Start/stop direction control – drive
Using the fieldbus for start/stop/direction control of the drive requires:
• Drive parameter values set as defined below.
• Fieldbus controller supplied command(s) in the appropriate location.
Bypass Parameter
1601 START/STOP
1625 COMM CTRL
2
Note:
Input reference select
Using the fieldbus for start/stop/direction control of the drive requires:
• Drive parameter values set as defined below.
• Fieldbus controller supplied command(s) in the appropriate location.
1102
1103
1106
2
Note:
2 (COMM)
0 (Drive
Only)
1 (System)
Ext1 = Ref 1
Ext 2 = Ref 2; Ref 2 normally used for PID setpoint commands.
Drive Parameter
SEL 2
1/
2
EXT
EXT
COMM
1
REF
SEL
COMM
2
REF
SEL
COMM
Ext1 = Ref 1
Ext 2 = Ref 2; Ref 2 normally used for PID setpoint commands.
Value
Description
Start/Stop by fieldbus with Ext1 or
2
Ext2
selected
1625 = 0 for control signals (Start/
Stop and enables) to go to drive only
1625 = 1 for control signals to go to
the system (drive or bypass,
depending on keypad mode
selection)
Value
Description
(8)
Reference set selection by fieldbus.
(8)
Input reference 1 by fieldbus.
(8)
Input reference 2 by fieldbus.
2-153
BACnet
Access Point
BV10
N/A
BACnet
Access Point
BV13
AV16
AV17
Embedded fieldbus

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