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Chapter 2
i-3 V2 I/O Controller
Power supply
The power supply is mounted under the
I/O printed circuit board. It uses one of the
3-phase buses as the main power source.
The power supply provides power to the
controller and all its functions.
Fuse
The fuse protects the wire to the power
supply and I/O Board from short circuits.
This fuse is a 2 Amps class CC fuse rated
for 600Vac or less. Figure 2.7 shows
the fuse housing. To replace the fuse use
LittleFuse KLDR002 or equivalent.
Power switch
An ON/OFF switch controls power to the
i-3 V2 controller. Be sure to turn the power
switch OFF prior to removing the fuse from
the controller.
Ribbon cables
A pair of 26-wire ribbon cables connect
the I/O Board and the data rails. They
provide two-way data communication
between the I/O Board and SIPODs. They
also provide power and ground.
Each ribbon cable has identical connectors
on each end. A "keying" feature reduces
the risk of installing the connectors in the
wrong orientation.
USB to RS-485 converter
A USB to RS-485 converter should be
purchased to allow communication
between the i-3 V2 I/O Controller and
a personal computer. FTD Chip part
# USB-RS485-WE-1800-BT is recommended,
however Siemens is not responsible for the
part's functionality.
A converter may be purchased from
Siemens – Part No. 5WG1 715-8XY02.
Users may also build a converter; see
Figure 2.4.
2A Fuse
Figure 2.7
Power Switch and Fuse Housing
Figure 2.8
Ribbon Cable
On/Off Switch
7
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