9907-147 Woodward ProTech 203 Overspeed Protection

Description:

The ProTech 203 Overspeed Protection System is a digital overspeed trip device that senses prime mover speed through three magnetic pickups (MPUs). It consists of three identical, independent, speed-sensing units which continuously monitor prime mover speed and activate a trip relay when an overspeed condition is detected. The trip relays of the three units are connected in a twoout-of-three voting configuration so that if any single unit fails, the ProTech system will still provide the correct output. The units' functions include the ability to display the actual speed from each speed probe, display the highest speed signal, on-line testing, and modular design that allows a single failed unit to be replaced while the device is running. Light emitting diodes (LEDs) and digital displays on the unit front panel indicate the functional status. 

Voltage Ranges
Input Power Requirements Per Kernel
24 Vdc = 18–32 Vdc, 5.12 W
120 Vac/dc = 88–132 Vac, 12.5 VA
90–150Vdc, 4.77 W
220 Vac = 180–264 Vac, 16.4 VA 

Pharameters:

Contact Input
Depending on how the unit is configured, this input can act as a remote start input, or as an indication to the ProTech system that it should be sensing speed greater than the MPU fail set point.

Built-In Self-Test
A built-in frequency generator permits testing of each unit individually while prime mover is on-line

Key Lock
Prevents any programming or testing by unauthorized personnel

Replacement
Each subsystem can be replaced (after disconnecting the supply power at the external disconnecting means) while the other two subsystems are powered without tripping the prime mover

Outputs
A separate alarm output and LED indicate if an individual speed-sensing unit has tripped

MPU Failure Indications
Separate LEDs indicate if an MPU or its wiring has failed

MPU Fail Timer
A timer is provided for start-up; if prime mover speed is not up to the value programmed when this timer times out, the device will trip the prime mover. Both the time and the speed are programmable

MPU Fail Option
Each unit can be configured so that on the sudden loss of that unit's MPU, the unit can either output both an alarm plus a trip signal, or the unit can output only an alarm

CPU Failure Indication
A separate LED indicates if any unit's CPU is not operating normally

Speed-Sensing Frequency Range
100 Hz to 32 kHz

Trip-Point Frequency Range
250 Hz to 25 kHz

MPU Input Amplitude
1 Vrms minimum @ 100 Hz to 25 kHz
2 Vrms minimum @ 25 kHz to 32 kHz
maximum 25 Vrms

Frequently Asked Questions:
1.Does the customer arrange for the inspection before the goods are shipped?
Confirmed acceppted this issue

2.What is the payment term?
Only wire transfer

3.When does the warranty period start?
One year from the time the client receives the goods

Datasheet Link:

9907-147 Woodward ProTech 203 Overspeed Protection PDF Datasheet