Commander SE User Guide
32
Issue Number 5
5.3
Serial communication connections
Serial communication connections can be made via the RJ45 connector (see Figure
5.3).
PIN 2
RXTX
PIN 3
0V
PIN 4
+26V (+10% / -7%) 100mA serial communications
PIN 6
TX Enable
PIN 7
RX\TX\
When using a suitable serial communications converter with Commander SE, it is
recommended that no terminating resistors be connected on the network. This applies
to any of the Drives on the network and also any converter used. It may be necessary
to link out the terminating resistor within the converter, depending on which type is
used. The information on how to link out the terminating resistor will normally be
contained in the user information supplied with the converter. Terminating resistors are
of little or no value when used on RS485 networks operating at or below 19.2KBaud.
For further information, refer to the Commander SE Advanced User Guide.
The communications port of the Commander SE Drive is double-insulated
and meets the requirements for SELV in EN50178. However, in the event of a
serious fault in the Drive the safety barriers could be breached. Therefore
when using the communications port with a personal computer or
centralised controller e.g. PLC, an isolation device must be included with
rated voltage at least equal to the Drive supply voltage. Ensure that the
correct fuses are installed at the Drive input, and that the Drive is connected
to the correct supply voltage.
5.4
Control terminal specifications
Isolation of control circuits
The control terminals of the Commander SE Drive are double-insulated and
meet the requirements for SELV in EN50178. However, in the event of a
serious fault in the Drive the safety barriers could be breached. The installer
must ensure that the external control circuits are insulated from human
contact by at least one layer of insulation rated for use at the AC supply
voltage. If the control circuits are to be connected to other circuits classified
as SELV e.g. a personal computer, an additional isolating barrier must be
included in order to maintain SELV classification. Ensure that the correct
fuses are installed at the Drive input, and that the Drive is connected to the
correct supply voltage.
5.4.1 Default configuration
All outputs (+24, +10V, Digital output and Analog output) could be
permanently damaged if a negative voltage greater than -1V is applied to
them.
WARNING
WARNING
CAUTION
