NORD Drivesystems BU0010 - Manual (Page 2)

NORDAC SK IC1-232/485 Operating Instruction
2 Technical design subject to change BU 0010 GB
General
The interface converter SK IC1-232/485 converts signals from
RS485 to RS232. This converter is used when connecting a PC
or laptop to a NORDAC frequency inverter. With the aid of
NORD CON software the frequency inverter can be operated
and assigned parameters. In addition to this, the software
provides a user-friendly diagnosis tool with oscilloscope function
to ensure optimisation of drive solutions.
Depending on the type of NORDAC frequency inverter, a suitable connecting cable will be
necessary to connect the frequency inverter to the interface converter (see Overview P.4). The
converter is directly plugged into the RS232 port of the PC/laptop with its SUB-D socket. An
LED displays when the +5V supply voltage is on. The converter can be supplied from the
respective frequency inverter or the PC (USB port).
Setting the baud rate
The baud rate can be set with a combination of 3 dip
switches in the range from 4800 to 38400 bit/s and
must be adjusted to the setting of the frequency
inverter. The standard setting is 38400 bit/s, which
enables the fastest data transfer. This also
corresponds to the standard setting of the frequency
inverter. The combination for the respective baud
rate is shown on the converter. Switching state “1”
corresponds to dip switch position “ON”.
If disturbances should occur in the transfer, this is
caused by too long a cable length or too high a baud
rate. The connection should be checked using a
lower transfer rate. For this, the setting of the
frequency inverter in parameter P511 must also be
observed.
Warning:
• The interface converter is not potential separated. The PC and/or frequency
inverter is not therefore spared the effects of a short-circuit!!!
• It must be ensured that the interface converter is connected to only one 5V
supply voltage. This may only be supplied either from the frequency inverter
or from the “external 5V supply cable” !!!
DIP-switch combination baud-rate
1 1 1 38400 Baud
1 1 0 19200 Baud
1 0 0 9600 Baud
0 0 0 4800 Baud
ON
1
ON
2
ON
3
ON
4
terminal-
resistor
R_off