Appendix G: Peripherals Galaxy Flex Installer Manual
224
RIO outputs
The RIO has four transistorised outputs (Table 11). Each output is connected to +12 V via a
3.3 kΩ pull-up resistor. When an output is activated, the load is switched to the negative
supply voltage (ground or 0 V).
The default functions and pull-up resistors are shown below:
Output Function Pull-up resistor
1 Bells R1
2 Strobe R3
3 PA R5
4 Reset R7
Table 11 RIO output default functions
Specification
Width: 160
mm 6 ¼”
Height: 151mm 6”
Depth: 40mm 1 ½”
Weight: (approx.) 300g 11oz
Humidity 0-85%
Nominal Supply voltage 12V DC
Current : Nominal 30mA
Current : Maximum 590mA
Max output current (max
combined load through all
switched outputs)
560mA
Max switched sink current via
outputs:
Output 400mA
Output 2, 3 & 4 100mA
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