Pulsafeeder Pulsar ECA NEMA7 - Manual (Page 7)

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1. INTRODUCTION
The ECA is a microprocessor based stroke length control device for use with the PULSAR diaphragm-
metering pump. It has been designed to operate in a variety of industrial environments. This
document describes the ECA controller only. The operation and maintenance of the PULSAR
metering pump is covered in the pump IOM. Please refer to this IOM for important safety and
operational instructions for your PULSAR pump.
1.1 Description
The ECA is an electromechanical servo controller dedicated to the PULSAR diaphragm metering
pump series. The unit is physically attached and integrated into the pump's design. The controller
allows for precise adjustment of output flow of a process media by means of stroke length
positioning.
The ECA is designed for the international industrial market. The analog control signals offer
flexible remote control. They are fully isolated - from each other as well as earth ground - for
improved protection and reliability.
The ECA is designed to simplify and automate the calibration of the analog signals. Analog signal
calibration is accomplished by simple push button entry. Calibration functions must be completed
while the internal circuitry of the unit is accessible, and therefore at a time when the surrounding
environment is non-hazardous.
1.2 Standard Features
 NEMA 7 enclosure
 4-20mA input and output
 EEPROM storage of calibration data.
 Diagnostics and Self-Test mode
The ECA is available for 120 or 240 VAC
operation, at either 50 or 60 Hz. Each ECA
controller must be operated on the appropriate
AC supply as per the nameplate ratings.