4 system bus – NORD Drivesystems BU0220 User Manual

Page 94

PROFIBUS DP

– Supplementary manualfor NORD Frequency Inverter SK 2xxE

Subject to technical amendments

BU 0220 GB-0912

8.4 System bus

SK 2xxE series frequency inverters and components communicate with each other via the system bus. This
bus system is a CAN bus with CANopen protocol. Up to four frequency inverters and their associated
components (field bus module, absolute encoder, I/O modules etc.) can be connected to the system bus.
Integration of the components into the system bus does not require any specific knowledge of the bus on the
part of the user.

Only the proper physical configuration of the bus system and if necessary the correct addressing of the
participants need to be taken into account by the user.

The system bus address of the bus modules (SK CU4-

… and SK TU4-…) is set to "5". The system bus

address of the up to 4 frequency inverters which can be connected are set by means of DIP switches (see
manual BU 0200) on the relevant frequency inverter, optionally between 32 / 34 / 36 and 38, whereby no
address may be doubly assigned within a system bus system.

For detailed information regarding the system bus (physical structure, integration and addressing of further
components) please refer to the inverter manual BU0200.

SYSTEM BUS

Configuration Example

1. FI

2. FI

3. FI

4. FI

1. I/O

Extension

8. I/O

Extension

Field Bus

Option

additional participants
(I/O extensions, CANopen encoder

Note:
Terminal77 = System bus + (CAN H)
Terminal78 = System bus - (CAN L)
Terminal numbers may differ