Woodward MicroNet Simplex - Figure 9-9. Analog Output Wiring for a 24;8 Analog FTM

Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 114
Analog Outputs
There are 8 analog output channels of 4–20 mA with a full scale range of 0-25 mA. All Analog Outputs
can drive a maximum load of 600 ohms (load + wire resistance). See Figure 9-4 for analog output
connection. Each output monitors the output source and return current for fault detection. All of the analog
outputs may be individually disabled. When a channel fault or a module fault is detected, the application
program may annunciate the fault, disable the channel and stop using data in system calculations or
control. Care should be taken to prevent ground loops and other faults when interfacing to non-isolated
devices. See Chapter 13 for complete field wiring information for the Analog High Density FTM.
Figure 9-9. Analog Output Wiring for a 24/8 Analog FTM
9.28.4—FTM Reference
See Chapter 13 for complete field wiring information for the Analog High Density FTM. See Appendix A
for part number Cross Reference for modules, FTMs, and cables.
9.28.5—Troubleshooting
Each 24/8 Analog Smart Plus module has a red Fault LED that is turned on when the system is reset.
During initialization of a module, which occurs after every CPU reset, the CPU turns the Fault LED on.
The CPU then tests each module using diagnostic routines built into the software. If the diagnostic test is
not passed, the LED remains on or blinks. If the test and initialization is successful, the red LED goes off
and green RUN LED is turned on.
If the Fault LED on a module is illuminated after the diagnostics and initialization have been run, the
module may be faulty or may be located in the wrong slot.
Table 9-3. LED Indications of Failure
Number of
LED Flashes
Failure Number of
LED Flashes
Failure
1 Watchdog/MFT Lost Failure 11 Software Failure
2 No Application 12 Power Supply Failure
3 Flash Memory Failure 13 Configuration or Parameter Error
4 Exception Failure 15 Parallel to Serial Bus Error
5 FPGA Failure 16 AI ADC Error
6 Non-Volatile Memory Error 17 AO Read back ADC Error
7 Kernel Watchdog Error 20 AI ADC Timeout
8 MFT Timing Failure 21 AO Read back ADC Timeout
9 Software Slip 22 AO DAC Timeout
10 RAM Memory Failure
Detailed fault description for active flash code can be obtained in AppManager.
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