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Contents
Cabling
Bus Termination
NCSA-01 Installation and Start-up Guide
Chapter 4 – Electrical Installation
This chapter contains:
• Cabling instructions
• Instructions for bus termination
• Connection and earthing instructions for the NCSA-01 Module and
earthing instructions for the bus cable.
WARNING! Before installation, switch off the drive power supply. Wait
for five minutes to ensure that the capacitor bank of the drive is
discharged. Switch off all dangerous voltages connected from external
control circuits to the inputs and outputs of the drive.
Arrange the bus cables as far away from the motor cables as possible.
Avoid parallel runs. Use bushings at cable entries.
Handle the fibre optic cables with care. When unplugging optic cables,
always grab the connector, not the cable itself. Do not touch the ends of
the fibres with bare hands as the fibre is extremely sensitive to dirt.
The maximum long term tensile load for the fibre optic cable is 1 N.
The minimum short term bend radius is 25 mm.
The built-in terminating resistors must be switched on if the NCSA-01
module is installed at the end of the bus. Otherwise the resistors must
be switched off. Terminating resistors prevent signal reflections from
the bus cable ends.
PE
+24V
0V
SH
SHF
DG
D(N) D(P)
X2
RXD
NCSA-01
TXD
CS 31
ADAPTER
DDCS
BUS
TERMINATION
UART
ON
OFF
ERROR
Figure 4-1 Terminating resistors on (left) and off (right).
PE
+24V
0V
SH
SHF
DG
D(N) D(P)
X2
RXD
NCSA-01
TXD
CS 31
ADAPTER
DDCS
BUS
TERMINATION
UART
ON
OFF
ERROR
4-1
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