Motor Overload Protection; Fieldbus Communication - ABB ACH580-34 Quick Installation And Start-Up Manual

20 EN – Quick installation and start-up guide

Motor overload protection

￭
Motor overload protection is not enabled by default. Motor overload protection can
be measured or estimated in one of the following ways: 1) using motor temperature
EN
devices, 2) using a motor model defined by parameters, or 3) using motor current and
motor class curves. To enable protection using motor temperature devices or motor
DA
model parameters, set parameter 35.11 and subsequent parameters through 35.55.
To adjust motor class curves (default is class 20), change parameters 35.56 and 35.57.
DE
Use the information key (
ES
group 35 parameters. You must set the drive overload parameters correctly, or motor
damage can occur.
FI

Fieldbus communication

￭
FR
To configure the embedded fieldbus communication for BACnet MSTP, you must set
IT
at least these parameters:
NL
Parameter
20.01 Ext1 commands
PL
PT
22.11 Speed ref1 source
SV
26.11 Torque ref1 source
TR
28.11 Frequency ref1
source
ZH
58.01 Protocol enable
58.03 Node address
58.04 Baud rate
58.05 Parity
58.06 Communication
control
Other parameters related to the fieldbus configuration:
58.14 Communication
loss action
?
) on the drive control panel for more information on setting
Setting Description
Embedded fieldbus Selects fieldbus as the source for the start and stop
commands when EXT1 is selected as the active control
location.
EFB ref1 Selects a reference received through the embedded
fieldbus interface as speed reference 1.
EFB ref1 Selects a reference received through the embedded
fieldbus interface as torque reference 1.
EFB ref1 Selects a reference received through the embedded
fieldbus interface as frequency reference 1.
BACnet MSTP Initializes embedded fieldbus communication.
Modbus RTP
1 (default) Node address. There must be no two nodes with the
same node address on-line.
19.2 kbps (default) Defines the communication speed of the link. Use the
same setting as in the master station.
8 EVEN 1 (default) Selects the parity and stop bit setting. Use the same
setting as in the master station.
Refresh settings Validates any changed EFB configuration settings. Use
this after changing any parameters in group 58.
58.17 Transmit delay 58.28 EFB act1 type 58.34 Word order