NFO
Drives
AB
2021
201013
‐
2
Operating
and
Installation
Manual
37
The ABCC (Anybus CompactCom) interface uses by default SPI (Serial Peripheral Interface) bus for internal
communication with inverter CPU. For backward compatibility with older versions of ABCC modules, it is possible
to select serial interface as well. Bus/station address for ABCC interface is by default set to 126.
All three interfaces have individually configurable timeout functions which can be configured to catch fault
conditions that could possibly leave the motor running while communication is lost. The functionality is activated
when the timeout parameter is set to any value other than zero. When activated, the master communication device
must repeatedly send any type of packet (read or write parameter) within the specified timeout period. If master
fails to do so, the inverter will issue a Sio Fail (RS485/USB) or Bus Fail (ABCC) alarm. If parameter Autostop = On
for the interface in question, it will also stop the motor if it’s running.
There is one parameter that is common for all three interfaces and that is the Auto Reset. When set to On (default),
any change of a communication parameter will take effect immediately. This is often best practice when altering
any setting from the display/keypad but, if necessary, set Auto Reset = Off, and the changed communication setup
will not take effect until after inverter has been restarted (power off – power on).
5.15 Display setup
The display has three positions where selectable actual values are shown (lower left, middle and right position). By
default, the actual values of I
RMS
, P
RMS
and PF (power factor) are shown respectively. Users may change these
values by altering the settings for Display Par 1, 2 and 3.
Backlight level and timeout are by default set to 50% and 2 minutes. If there is no keyboard activity within the
timeout period, the display backlight will dim down to 10%. Next time any key is pressed, the backlight will resume
its previous level. If timeout is set to 0, the timeout is disabled and the display will never dim down.
If the inverter is installed at a location with public access, it’s possible to enable a read only lock for all setup
parameters. When activated, all parameters normally writable become read only. To unlock the read only lock, user
must enter pin code 139.
Note: Start/Stop and Man/Auto buttons are not locked, as this could compromise user safety. Only the ability to
change the value of parameters is disabled.
5.16 Status, Temperature, Counters and Version
To obtain status and information about actual values and read-only settings, the user can access the
corresponding menus: Status (actual voltages, currents, output power, analog input levels, etc.), Temperature
(actual motor, power module and heat sink temperatures, as well as fan voltages and other internal voltages),
Counters (running, operating, brake, current limit and undervoltage timers/counters) and Version (firmware version,
serial number and production date).
5.17 Reset to factory settings
The inverter parameters can be reset to the default factory settings using the Sinus Manager (PC/Windows)
programme, which can be downloaded from www.nfodrives.se
3006469-2022-04
