Description
Many products have not been listed yet. For more products, please contact us
If the product model is inconsistent with the displayed image, the model shall prevail. Please contact us for specific product images, and we will arrange for photos to be taken and confirmed in the warehouse
we have 16 shared warehouses worldwide, so sometimes it may take several hours to accurately return to you. We apologize for any inconvenience caused. Of course, we will respond to your concerns as soon as possible.
9907-149 ProTech 203 Electronic Overspeed Trip Device from Woodward that senses prime mover speed through three magnetic pickups (MPUs).
Product Description
ProTech model 9907-149 is a 120 Vac/dc device. There is a separate power supply for each of the three speed-sensing units in this system. This is part of the modular design of this Woodward overspeed protection device that enables such features as hot replacement of an individual unit and testing of individual units without taking the prime mover offline.https://www.weikunfadacai1.com/
Speed-sensing units A, B, and C in model 9907-149 are identical. On top of having separate power supplies, the units also have separate operator interfaces and alarm systems. The three units are configured for a two-out-of-three voting method. Prior to this hardware vote, the three units act independently, monitoring prime mover speed with magnetic pickups (MPUs) and individually performing speed calculations.
The three units that makeup ProTech model 9907-149 must be programmed with identical trip points. PROGRAM mode is accessed with a key switch that is connected to all three units. Due to the modular design of this Woodward system, units are programmed separately.
Tunable parameters are set when the units are in PROGRAM mode. These parameters are:
Trip Speed Set Point (250 rpm to 25,000 rpm)
MPU Gear Teeth (20 to 120)
MPU Failed Timeout (1 sec to 533 min 20 sec)
MPU Failed Set Point (100 rpm to 25,000 rpm)
Trip on MPU Failure
Timer Starts on Reset
Alarm If Speed Is < MPU Failed Set Point
These parameters, along with Present Speed, Peak Speed, Lamp Test, and Trip Cause, can all be viewed on the unit operator interface while the unit is in MONITOR mode. Present Speed is the default first parameter displayed.
The enclosure of Woodward ProTech model 9907-149 is NEMA 4 and 4X certified (IP54 for Europe). Manual 85204 (Revision G) is the manual for this device.
Reviews For 9907-149
Each 9907-149 model from Woodward’s series of the ProTech 203 system includes a touchpad, a two-line by 16-character LCD display, and a potentiometer for adjusting the overspeed test frequency.
Model recommendation:
Reviews
There are no reviews yet.