6. CONNECTION OF I/O UNITS TO
I/O Link function Provided with two slave mode I/O Link interface channels, between which DI/DO data can be
One of the following combinations is selected:
Electrical – optical
Electrical – electrical
Optical – optical
Number of DI/DO data
DI: Up to 256, DO: Up to 256
(The number of data items actually used varies depending on the mount of data assigned in the
Power supply Each I/O Link interface must be independently supplied with +24 VDC.
Voltage: +24 VDC +10%, –15%
Current: 0.2 A (excluding surge)
If a master unit does not have sufficient capacity to supply power to each unit (0.2 A per slot), use
an external power supply unit. The power supply must be switched on, either simultaneously with
or before, the I/O Link master.
The two systems can be switched on and off independently of each other. Data from a system to
which no power is supplied appears as zeros when viewed from the other system. The data
becomes 0 within 200 ms of the power being switched off.
External dimensions 180 150 About 50 mm
W H D
Fig. 6.11.2(b) is an outline drawing of the unit.
Installation The unit, which is a separate type, is installed in the power magnetics cabinet. Fig. 6.11.2(c) shows
how to mount the unit.
Operating environment Temperature: 0 to 60°C
Humidity : 5 to 75% RH (non–condensing)
Vibration : 0.5 G or less
Interface type Specification
Electrical–optical interface A20B–2000–0410
Electrical–electrical interface A20B–2000–0411
Optical–optical interface A20B–2000–0412