Woodward Vertex-Pro, Installation/Hardware Manual, Page: 50 / 112

Vertex-Pro Motor-Driven Compressor Control Manual 26489V1
40 Woodward
The 24 channel analog inputs are divided into two banks, with
channel 1 through channel 12 data gathering at 1.8 ms after the MFT
tick and channel 13 through channel 24 data gathering at 3.7 ms after
the MFT tick.
4–20 mA Output Ratings
Number of channels: 8
Update time: 5 ms
Output Driver: Pulse Width Modulated (PWM)
PWM frequency: 6.14 kHz
Filter: 3 poles at 500 ms
Current output: 4–20 mA
Current output range: 0-25 mA
Isolation: 0 Vrms
Max load resistance: 600 ohms (load + wire resistance)
Current readback: 8 bits
Readback isolation: 60 dB CMRR, 200 Vdc common mode rejection
voltage
Resolution: 11 bits
Accuracy: Software calibrated to 0.2% of 0-25 mA full scale
Temperature drift: 125 ppm/C, maximum
Readback accuracy: 0.5% of 0-25 mA full scale
Readback temp drift: 400 ppm/C, maximum
7.3.3—Installation
The modules slide into card guides in the control's chassis and plug into the
motherboard. The modules are held in place by two screws, one at the top and
one at the bottom of the front panel. Also at the top and bottom of the module are
two handles which, when toggled (pushed outward), move the modules out just
far enough for the boards to disengage the motherboard connectors.
Each 24/8 Analog Module is connected through two High Density
Analog/Discrete cables to two 24/8 Analog FTMs. All I/Os on the module are
accessible on the FTM, and the channels are labeled to correspond to their
software locations (e.g., analog input 1 on the FTM will be analog input 1 in the
application software). See Figure 9-2 for an example.