Woodward 721 - Page 51

721 Control Specifications
Woodward Part Numbers: 8237-735
Power Supply Rating 18–32 Vdc (24 Vdc or 32Vdc nominal)
Power Consumption 18 watts nominal
Steady State Speed Band magnetic pickup: 400–15 000 Hz (8–2100 rpm)
proximity switch: 7.5–1000 Hz (8–2100 rpm)
Discrete Inputs (8) 10 mA at 24 Vdc
KW Transducer Input 4–20 mA or 1–5 Vdc
Remote Speed Setting Input 4–20 mA or 1–5 Vdc
Actuator Output 0–180 mA
Tachometer Output 4–20 mA
Speed Reference Output 4–20 mA
Rack position Output 4–20 mA
Relay Outputs Load Transferring, Major Alarm, Minor Alarm
Programmer Serial Port RS-422, 9-pin D connector, 1200 baud, full duplex
Ambient Operating Temperature
–40 to +70 °C (–40 to +158 °F)
Storage Temperature –55 to +105 °C (–67 to +221°F)
Humidity 95% at 38 °C
EMI/RFI Susceptibility US MIL-STD 461C (Parts 5 & 9)
Humidity US MIL-STD 810D, Method 507.2, Procedure III
Mechanical Vibration 24–2000 Hz swept sine, 2.5 Gs constant
acceleration, resonant dwells , 1 million cycles,
total time , 6 hours/axis
Mechanical Shock US MIL-STD 810C, Method 516.2, Procedure I
(basic design test), Procedure II (transit drop test,
packaged), Procedure V (bench handling)
Salt Spray ASTM B 117-73