IAI ERC2, Operation Manuals, Page: 47 / 138

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3. Electrical Specifications
3.3 SIO Converter (Optional)
Model number: RCB-TU-SIO-A (Vertical installation)
RCB-TU-SIO-B (Horizontal installation)
This unit is a RS232C-RS485 converter.
When multiple controllers are linked together, you can use the SIO converter to perform movement operations
and edit parameters for all axes at the same time by connecting a teaching pendant to the mini-DIN, 8-pin
connector on the converter.
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Explanation of functions
[1] Power/emergency-stop terminal block (TB2)
Provide a contact output for the emergency-stop switch on the teaching pendant (RCA-T/E).
EMG1 and EMG2 connect to the emergency-stop switch on the teaching pendant when the
PORT switch is ON, or are shorted when the PORT switch is OFF.
These terminals comprise an interlock with a safety circuit provided by the user.
Positive side of the 24-V power supply
Power supply for the teaching pendant and conversion circuit
Current consumption: 0.1 A max.
Negative side of the 24-V power supply
EMG1, EMG2
24V
0V
FG
FG of the 24-V power supply
[2] Link-connection terminal block (TB1)
A connection port for linking the controller.
“A” on the left side connects to SGA (wire color: orange/red 1) in the extension cable.
“B” on the right side connects to SGB (wire color: orange/black 1) in the extension cable.
(Note) Be sure to use twisted pair wires for the above two lines (SGA/SGB).
[3] Link connectors (J4, J5)
e-con connection ports for linking the controller. These ports accept an optional link cable (CB-RCB-
CTL002) directly. Note that J4 and J5 provide connections for two axes only. To connect three or more axes,
use the terminal block explained in [2].
[2] Link-connection
terminal block (TB1)
[1] Power/emergency-stop
terminal block (TB2)
[7] Monitor LEDs
[4] D-sub, 9-pin connector
[6] PORT switch
[5] Mini DIN, 8-pin connector
[3] Link connectors (J4, J5)