NORD Drivesystems BU0750 - Manual (Page 37)

3.2 Overview of Technology Units
BU 0750 GB-3311 Subject to technical amendments 37
3.2.7 InterBus Module SK TU2-IBS
(SK TU2-IBS, Part No.: 275130080)
(SK TU2-IBS-C, Part No.: 275170080)
With InterBus, up to 256 participants from a wide range of automation
devices can exchange data. PLC's, PC's, operating and monitoring
devices can all communicate via a uniform bus in serial bit mode.
NORDAC frequency inverters are remote bus participants. The data
width is variable (3 words; 5 words), at a baud rate of 500kBit/s
(optional 2Mbit/s). An additional termination resistor is not necessary
as it is already integrated. Addressing is carried out automatically by
means of the physical arrangement of the participants.
An external 24V supply is required for uninterrupted Bus operation.
NOTE:
Detailed information can be obtained from the operating instructions BU 0070 or contact the
supplier of the frequency inverter.
3.2.8 AS interface SK TU2-AS1
(SK TU2-AS1, Part No.: 275130120)
(SK TU2-AS1-C, Part No.: 275170120)
The ActuatorSensor Interface (AS-Interface) is a bus system for the lower
field bus level. The transmission principle is a single master system with
cyclical polling. A maximum of 31 slaves (or 62 A/B slaves) can be
operated on an up to 100m long unshielded two-wire cable in any network
structure (tree/line/star). The AS interface cable (yellow) transmits data and
energy while a second two-wire cable can be used for a small auxiliary
voltage (24V). Addressing is implemented via the master, which can also
provide other management functions, or via a separate addressing device.
The 4 bit reference data (per direction) are cyclically transmitted with an
effective error protection at a maximum cycle time of 5ms. Transmission of
larger data volumes is also possible with some slave profiles (e.g. slave
profile 7.4). The bus system is defined in the AS-Interface Complete
Specification.
NOTE:
Detailed information can be obtained from the operating instructions BU 0090 or contact the
supplier of the frequency inverter.
Module status LEDs ST (red/green) Module error/ready
InterBus status LEDs
UL (green) Supply voltage applied.
RC (green) Remote Check, remote bus to previous InterBus device is OK.
BA (green) Bus Active, InterBus data are being exchanged (Bus running).
RD (yellow)
Remote bus disabled, remote bus to next InterBus device is
switched off.
TR (green) Transmit, data is being transferred from/to participants.
Status LEDs
Device S/E (red/green) Module status/error.
AS-Int. PWR/FLT (red/green) Standard status display for AS interface slaves.