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Configured for analog control signal generation and actuator positioning in turbine governor systems, the Woodward 5461-644 (5461-644 Current Output Module) provides direct physical/electrical execution. This hardware component converts internal digital control words into precise 4-20 mA current loops to drive external proportional valves and actuators with high dynamic stability.
| Parameter | Specification |
|---|---|
| Model | 5461-644 |
| Brand | Woodward |
| Origin | USA |
| Weight | 0.3 kg |
| Dimensions | 20.3 cm x 2.5 cm x 22.9 cm |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | 8 W max at 24 VDC |
| Output Signal | 4-20 mA current loop |
| Isolation | Channel-to-channel galvanic isolation |
The hardware incorporates high-precision digital-to-analog converter stages and drive amplifiers optimized to minimize settling time during actuator loop feedback response tasks. Internal thermal heat sink dissipation profiles manage continuous output stage loading inside sealed industrial enclosures without active cooling fans. Built-in harmonic distortion suppression filters mitigate electromagnetic interference on the output current lines, ensuring steady valve positioning despite harsh electrical noise environments.
Q: What is the maximum load resistance supported by the 4-20 mA output channels?
A: The output drivers are designed to drive standard industrial loop loads up to 750 ohms while maintaining specified signal accuracy and linearity.
Q: Are the current output channels isolated from the system backplane and power supply?
A: Yes, each channel incorporates robust galvanic isolation to prevent ground loop interference and protect internal controller logic from external field transients.