11
Motor overload protection
The factory motor overload protection is not enabled by default. Motor thermal overload protection can be measured using
motor temperature devices, can be estimated using a motor model defined by parameters, or can use measured motor
current and motor Class curves. To enable protection using motor model parameters or measurement devices set
parameter
35.11
and subsequent parameters through
35.55
. To enable motor Class curves set parameter
35.56
. Motor
overload Class is defaulted to 20 and selectable in parameter
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 Modbus RTU, you must set at least these parameters:
Other parameters related to the fieldbus configuration:
Warnings and faults
13. 14.
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
Modbus RTU 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 58.34 Word order
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
Warning Fault Aux. code Description
A2A1 2281 Current calibration Warning:
Current calibration is done at the next start.
Fault:
Output phase current measurement fault.
- 2310 Overcurrent The output current is more than the internal limit. This can also be caused by
an earth fault or phase loss.
A2B3 2330 Earth leakage A load unbalance that is typically caused by an earth fault in the motor or the
motor cable.
A2B4 2340 Short circuit There is a short-circuit in the motor or the motor cable.
- 3130 Input phase loss The intermediate DC circuit voltage oscillates due to missing input power
line phase.
- 3181 Wiring or earth fault Incorrect input and motor cable connection.
A3A1 3210 DC link overvoltage Intermediate DC circuit voltage is too high.
A3A2 3220 DC link undervoltage Intermediate DC circuit voltage is too low.
- 3381 Output phase loss All three phases are not connected to the motor.
- 5090 STO hardware failure STO hardware diagnostics has detected hardware failure. Contact ABB.
A5A0 5091 Safe torque off The Safe torque off (STO) function is active.
A7CE 6681 EFB comm loss Break in embedded fieldbus communication.
A7C1 7510 FBA A communication Communication lost between drive (or PLC) and fieldbus adapter.
A7AB - Extension I/O
configuration failure
The I/O extension module types and locations specified by parameters do
not match the detected configuration.
AFF6 - Identification run The motor ID run occurs at the next start.
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