ABB S4 - Analog I;O Board DSQC 209

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Computer System
Electrical
Troubleshooting Guide
IRB-6400 M94A
2.4.8 Analog I/O Board DSQC 209
Designation Label Description
Test switch +15: + supply
IN 1-4: input signal
0: 0V
OUT 1-4: output signal
- 15: - supply
Test out Measuring The analog value of the signal
terminal indicated by the test switch.
0V Measuring 0V
terminal
F Red Turns off when the board
approves the initialization.
The analog I/O board, DSQC 209, converts analog
input signals to digital and vice versa. The signal level
equals 10V in and out with a resolution of 12 bits
including characters. The board is supplied with ±15V,
either internally or externally. The analog side of the
board is galvanically insulated from the system. The
first output, is the current output, which can drive or sink
a current of 20 mA. The board has a test input/output on
the front panel and a test switch which can be used to
test whether the board is working properly. By turning
the test switch to the position for measuring inputs, a
power supply can be connected to the test terminal
(protecting resistance should be used in the serial
channel) to test whether the inputs are working properly.
If replaced, there are no adjustments or procedures
required.
The I/O window can be used to check the status of the
inputs and outputs. Outputs can be controlled manually
and inputs can be read from the I/O window. Common
causes of errors are cable faults or faults in external
equipment. If none of the channels work, check that the
internal or external ±15V supply is OK and correctly
connected. If the red F-LED is lit, the board is probably
faulty or the system parameters are incorrect (i.e. the
board is not defined). Refer to Chapter 11 - Inputs &
Outputs for procedure.
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