
6
Electrical installation
Terminal assignment and DIP switches
Manual – DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
35
Assignment: CAN 1 system bus interface
No.
Name
Function
X33
1
DGND
Reference potential for system bus CAN 1
2
CAN 1H
System bus CAN 1 high
3
CAN 1L
System bus CAN 1 low
Connecting the system bus
INFORMATION
•
The CAN 2 system bus is electrically isolated. We therefore recommend to use
the CAN 2 ( X32) system bus interface for connecting field devices (e.g. CANopen
inputs and outputs).
•
The CAN 1 system bus is
not
electrically isolated. We therefore recommend to
use the CAN 1(X33) system bus interface to connect inverters via the system bus
in the control cabinet.
•
A CAN system bus interface is required for communication between
MOVIDRIVE
®
MDX61B and the integrated controller.
The CAN system bus supports transmission systems compliant with ISO 11898. The
"Serial Communication" manual contains detailed information about the CAN system
bus. This manual can be ordered from SEW‑EURODRIVE.
Cable specification
•
Use a 2 × 2-core twisted and shielded copper cable (data transmission cable with
braided copper shield). IEC 60999 does allow clamping without conductor end
sleeves. The cable must meet the following specifications:
– Cable cross section 0.2 mm
2
– 1.0 mm
2
(AWG24 – AWG18)
– Cable resistance 120 Ω at 1 MHz
– Capacitance per unit length ≤ 40 pF/m at 1 kHz
Suitable cables include CAN bus or DeviceNet cables.
6.2.8
X34: COM 1/COM 2 (RS485) engineering interface
Function
You can connect one of the following devices to the COM 1/COM 2 (RS485) engin-
eering interface:
•
Gearmotor with integrated frequency inverter MOVIMOT
®
•
DOP11B operator panel
NOTICE
•
There must not be any potential shift between the devices connected via the
RS485. Take suitable measures to avoid potential shift such as connecting the
device ground connectors using a separate cable.
•
Dynamic terminating resistors are installed.
Do not connect any external ter-
minating resistors
.
22900055/EN – 08/2016
Содержание DH 21B Series
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