The Contrec 430D is a batch controller for flow applications needing precise control of batch quantities, reading a pulse or frequency signal from a turbine flowmeter or proximity switch. It can also be set up as a simple rate totaliser instead of a batch controller, counting up from zero or down from a preset quantity, depending on how the customer wants to work.
It drives two relays for one or two-stage valve control, the first handles batch start and stop, and the second can be set to slow the flow down before the target is reached so a fast-closing valve doesn’t cause overshoot. Automatic overrun compensation learns from the previous batch how much product keeps flowing after the valve signal closes, and adjusts the next batch’s cut-off point accordingly. Batch quantities and calibration parameters are entered through a 12-key numeric keypad, with four dedicated run/rate/reset/stop keys for day-to-day operation, and all four functions can also be triggered remotely through push-button switches wired to the rear terminals.
Before we quote this, we would normally confirm the flowmeter’s pulse output characteristics, whether DC or AC power is available on site, and whether the standard panel enclosure or the optional IP67 field enclosure fits the installation better. Hope this helps.
