68
System Manual – MOVIDRIVE® compact Drive Inverters
2
Serial interface option type USS21A (RS232 and RS485)
Technical Data and Dimension Drawings
2.11
Serial interface option type USS21A (RS232 and RS485)
Part number
822 914 7
Description
MOVIDRIVE
®
can be equipped with isolated interfaces RS232 and RS485. The RS232
interface is designed as a 9-pole sub-D socket (EIA standard) and the RS485 interface
as a terminal connection. The interfaces are accommodated in a housing to be plugged
into the inverter (TERMINAL option slot). The option can be plugged in during operation.
The transmission rate of both interfaces is 9,600 Baud.
Startup, operation and service can be performed from the PC via the serial interface.
Use the SEW software MOVITOOLS
®
for this purpose. Set parameters can also be
transferred to several MOVIDRIVE
®
drive inverters via the PC.
Note
The DBG11B, USS21A and USB11A options are plugged into the same inverter slot
(TERMINAL) and therefore cannot be used at the same time.
RS232 interface
To connect a PC to the MOVIDRIVE
®
option USS21A, use a commercially available, se-
rial, shielded interface cable with a 1:1 connection assignment.
RS485 interface
A maximum of 16 MOVIDRIVE
®
units can be connected for communication (max. cable
length 200 m) via the RS485 interface of the USS21A. Do not connect external termi-
nating resistors as dynamic terminating resistors are already installed!
The unit addresses 0...99 are permitted for multipoint connections. In this case, do not
select the point-to-point connection option in MOVITOOLS
®
. The communication
address in MOVITOOLS
®
must match the RS485 address of MOVIDRIVE
®
(P810).
Dimension draw-
ing for USS21A
All dimensions in mm.
59829AEN
Figure 15: USS21A - PC connection cable (1:1 connection assignment)
RxD
TxD
2
2
3
3
5
5
max. 5 m
USS21A
PC COM 1-4
5
5
3
3
2
2
2
3
5
5
3
2
9-pin Sub-D socket
9-pin Sub-D plug
GND (ground)
59822AXX
85
120
RS232
RS485
0V5 - +
28.5
1.5
P
i
f
kVA
Hz
n
Summary of Contents for MOVIDRIVE compact MCH41A
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