Pulsafeeder Pulsar DLC XP RC - Manual (Page 5)

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1. Introduction
The DLC–XP/RC is a microprocessor based stroke length control device for use with the PULSAR
diaphragm metering pump. It has been designed with many advanced features that allow the PULSAR to
operate in a wide variety of industrial environments.
This instruction manual covers the DLC–XP/RC - Digital Stroke Length Controller for NEMA 7
installations. Refer to Table 1 for the specific standard features and options for your model. All standard
features are covered in this manual and most options have instructions where applicable.
For information specific to the metering pump itself, please consult the appropriate IOM. This document
contains information on the electronic controller only.
1.1 Description
The DLC–XP/RC is an electromechanical servo controller dedicated to the PULSAR diaphragm
metering pump series. The stroke control mechanism is physically attached and integrated into the
pump's design. The control and user interface is located remotely to the pump -- in a safe environment.
The purpose of the DLC–XP/RC is to precisely adjust output flow of a process media by means of
stroke length positioning.
The DLC-XP/RC is designed for the international industrial market. The device is factory configured
and calibrated for the attached pump. The man/machine interface is user friendly. Local setup and
control is achieved through the nine button keypad and a back-lit two-line liquid crystal display. Basic
operation is simple with dedicated function keys eliminating the need for a sophisticated menu system.
The DLC-XP/RC responds immediately to user commands. Pump output is displayed as a percentage
of stroke length position or in units of calibrated flow: GPH, LPH, CCH, GPM, LPM, CCM. In
addition, the DLC-XP/RC display supports any one of four standard languages: English, French,
German, or Spanish.
Analog signals and serial communications offer flexible remote control. They are fully isolated from
each other as well as earth ground for improved protection and reliability. Time-based batching, with
up to three independent programs, supplements the control features and allows for greater flow
turndown.
The DLC-XP/RC is designed to simplify and automate the calibration of pump flow and analog signals.
Flow calibration uses on-screen prompting, automated pump operation, and automatic curve fitting to
eliminate stop-watches, calculators and human inaccuracies. Analog signal calibration is also
accomplished by simple key-pad entry. It includes a real-time display of signal level. This eliminates
the need for external meters.
The DLC-XP/RC readily accepts PULSAlarm® leak detection and drum level inputs. These may be
configured to stop the pump and/or activate an alarm relay. Alarms are time and date stamped into
memory for later retrieval. Other diagnostics include analog signal failure and line power failure.
These are time and date stamped as well and may be preset to control stroke position or motor status
upon detection.