The THAYER series of PCA’S (Power Control Assemblies) accept standard AC power sources
and converts them to an adjustable output capable of controlling typical driving devices,
such as AC or DC Motors and Vibratory trays. The output of these drives can be controlled
manually (Hand) or automatically (Remote) and may be used for any application described in
this brochure.
Digital Inputs are discrete signals that can be provided from a variety of field sources, such as; selector switches, push buttons, dry contacts or even 120 VAC PLC outputs. Analog Inputs can be programmed to accept a current or voltage signal typically from process control equipment or potentiometers. Digital Outputs are Form A Contacts and are used to report the operating status of the drive.
Standard package offering is open chassis, optional packaging offering include a selection of enclosures. Enclosures have a choice of standard and/or optional mounting and latching styles. Other options include Operator Stations, commonly required by most industries and often referred to as HOA’S. This option can be supplied as part of the enclosure option or as a stand alone unit and include, Hand-Off-Remote Selector Switch, Hand Start and Stop Push Buttons and Hand Speed Adjust Potentiometer. These four basic controls along with the enclosure latching options meet or surpass most facilities safety, maintenance, set-up, calibration and troubleshooting requirements
and needs.
Each drive maintains the same control strategy and use many identical sub-components therefore giving them the same functionality inside and out. This concept not only simplifies all aspects of training, operation and calibration it minimizes the amount of spare parts required to perform basic preventative and general maintenance. |
