11
Motor overload protection
The motor thermal overload protection can use motor temperature devices or can be estimated using a motor model
defined by parameters. The motor thermal overload protection is set to motor current and motor class curves as default. To
enable protection using motor model parameters or measurement devices, 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
.
Use the information key ( ) on the drive control panel for more information on setting group 35 parameters. You must set
the drive overload parameters correctly, or motor damage could occur.
Fieldbus communication
To configure the embedded fieldbus communication for BACnet MSTP, you must set at least these parameters:
Other parameters related to the fieldbus configuration:
11.
After the additional adjustments,
make sure that the actual I/O wiring
matches the I/O use in the control
program. In the Main menu, select I/O
and press (Select).
11.
After the additional adjustments, make
sure that the actual I/O wiring matches
the I/O use in the control program. In
the Main menu, select I/O and press
(Select).
12.
After making the additional
adjustments and checking the I/O
connections, use the Diagnostics menu
to make sure that the setup is
functioning correctly. In the Main
menu, select Diagnostics and press
(Select) (or ).
Parameter Setting Description
20.01 Ext1 commands
Embedded
fieldbus
Selects fieldbus as the source for the start and stop commands when
EXT1 is selected as the active control location.
22.11 Speed ref1 source
EFB ref1 Selects a reference received through the embedded fieldbus interface
as speed reference 1.
26.11 Torque ref1 source
EFB ref1 Selects a reference received through the embedded fieldbus interface
as torque reference 1.
28.11 Frequency ref1 source
EFB ref1 Selects a reference received through the embedded fieldbus interface
as frequency reference 1.
58.01 Protocol enable
BACnet MSTP Initializes embedded fieldbus communication.
58.03 Node address
1 (default) Node address. There must be no two nodes with the same node
address on-line.
58.04 Baud rate
19.2 kbps (default) Defines the communication speed of the link. Use the same setting as
in the master station.
58.05 Parity
8 EVEN 1 (default) Selects the parity and stop bit setting. Use the same setting as in the
master station.
58.06 Communication control
Refresh settings Validates any changed EFB configuration settings. Use this after
changing any parameters in group 58.
58.14 Communication loss
action
58.17 Transmit delay 58.28 EFB act1 type
58.15 Communication loss
mode
58.25 Control profile 58.31 EFB act1 transparent
source
58.101 Data I/O 1
…
58.124 Data I/O 24
58.16 Communication loss
time
58.26 EFB ref1 type 58.33 Addressing mode
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