Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 121
9.29.4—FTM Reference
See Figure 9-74 below for complete field wiring information for the 4Ch MPU/Eddy FTM. Note the ground
connection on pin 37 of the FTM.
See Appendix A for part number Cross Reference for modules, FTMs, and cables.
Figure 9-12. MPU and Prox Probe Interface Wiring
Analog Inputs
For a 4–20 mA input signal, the Speed/Analog IO Combo Smart-Plus Module uses a 200 ohm resistor
across the input located onboard the module. Each analog input channel may power its own 4–20 mA
transducer.
See Figure 9-75 for analog input connection. This power is protected with a 100 mA fuse on each channel
located at the FTM to prevent an inadvertent short from damaging the module. The 24 Vdc outputs are
capable of providing 24 Vdc with ±10% regulation. Power connections can be made through terminals
located on the 24/8 Analog FTMs. See Chapter 13 for complete field wiring information for the 24/8
Analog FTM.
Maximum loop power current is 0.32A per 12 inputs located on the
same FTM.
When configuring the AI Combo block in GAP, set Conf. input field to
0 for all inputs working in 1-5V voltage mode. This will disconnect
input 200ohms sense resistor and allow the block to use the module
factory voltage calibration values.
When configuring the AI Combo block in GAP, set Conf. input field to
1 for all inputs working in 4-20mA current mode. This will allow the
block to use the module factory calibration values for inputs that were
calibrated with 200 ohm internal resistors on the 24/8 Analog Module.
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