IFM Electronic CR0403 Programming Manual page 24

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System description
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Output group Q3 (OUT10, OUT11)
These outputs are a group of multifunction channels.
These outputs provide several function options (each output separately configurable):
• binary output, plus switching (BH) with/without diagnostic function
• analogue output with Pulse Width Modulation (PWM)
Possible operating modes inputs/outputs
→ chapter
► Configuration of each output is made via the application program:
OUTPUT
→ FB (→ page 180)> input MODE
PWM output: → FB
► For the limit values please make sure to adhere to the data sheet!
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Diagnosis: binary outputs (via voltage measuring)
The diagnostics of these outputs is made via internal voltage measurement in the output:
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Diagnosis: overload
The outputs have no current measuring, no overload detection.
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Diagnosis: wire break
Wire-break detection is done via the read back channel. When the output is blocked (Qn=FALSE) wire
break is detected when the resistor Ru pulls the read back channel to HIGH potential (VBB). Without
the wire break the low-resistance load (RL < 10 kΩ) would force a LOW (logical 0).
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Diagnosis: short circuit
Short-circuit detection is done via the read back channel. When the output is switched (Qn=TRUE)
short circuit against GND is detected when the read back channel is pulled to LOW potential (GND).
BasicController (CR0403) Runtime System V03.02
PWM1000
(→ page 182)
(→ page 207)
Figure: principle block diagram
(1) Output channel
(2) Read back channel for diagnosis
(3) Pin output n
(4) Load
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2015-04-01
Hardware description
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