Berges SIOC03, Operating Instructions Manual

09.10.03

Operating Instructions

SIOC03_GB

Serial Input/Output Converter SIOC03

3

3

Connections

3.1

Introduction

This chapter provides information on connecting the required wiring to the SIOC03 convert-
er.

3.2

General Wiring Information

3.2.1

Wiring Practices

Good wiring practice requires separation of low voltage wiring from all power wiring. Power
from inverters and other non-linear loads contain high frequencies that may interfere with
other equipment. Do not run low voltage signal wires in the same conduit or raceway with
power or motor wiring. Observe general RFI suppression measures (refer to the inverter
manuals (electromagnetic compatibility)).

3.2.2

Considerations for Control Wiring

All wiring associated with the SIOC03 converter module is low voltage wiring. Many of the
conductors carry high frequency signals that contain the communication signals. Select this
low voltage wiring as follows:

1. Shielded wire is recommended to prevent electrical noise interference from causing im-

proper operation or nuisance tripping. Connect the shield as recommended by the
equipment manufacturer.

2. Twisted pairs are recommended. The SIO+ and SIO– conductors should be twisted to-

gether. If a twisted pair is used for the power supply connection, the positive voltage and
common conductors should be twisted.

3. Use only VDE, UL or CUL recognized wire.

4. Wire voltage rating must be at least 300 volts.

3.2.3

RS232 Communication Cable

It may be desirable to extend the length of the 9 pin “D” shell connector. To do this requires
a straight through cable assembly (i.e pin 1 connects to pin1; pin 2 to pin 2; etc.). Mouse
extension cables may not perform correctly. To assure reliability, always keep the length of
this connection as short as possible, with an absolute maximum of 25 feet. The cable
should be kept clear of any power signals.

3.3

Terminals Found on the SIOC03

Figure 1 shows the power SIOC03 circuit board assembly. The Table 1 describes the ter-
minals.