AS3050/3051

Description

The AS3050(wall mounted) and AS3051(panel mounted) cooling tower controllers are universal applicable for automatic monitoring and control of cooling tower plants. The controller is equipped with a conductivity meter optional second conductivity meter and temperature gauge. The measured conductivity values can be automatically compensated for temperature.. Also optional is a circuit board with two recorder outputs (0(4) – 20 mA). By means of an optional recorder card the measured conductivity and temperature can be sent to a recorder (0-20mA or 4-20mA). If the plug-in card with two conductivity meters has been installed, two flush systems can be controlled. Adaptable to user specific requirements by built-in programmable options.

Features

• Menu driven programming utilizing “two line” LCD-display
• Choice of languages (English, French, German or Dutch)
• Adaptable to user specific requirements by built-in programmable options
• Simple control utilizing easy to follow symbols
• Universally applicable for various sizes of installation
• Programming a service telephone number possible
• Substantial status information employing INFO key:
  • actual input and output conditions
  • service telephone number
  • software version
  • programming situation of the annunciation and malfunction relays
  • instrument probe cell constants
• Large green LCD-display showing water conductivity
• 7 Inputs : low level 1, tank full, tank empty, flush blocking 1, fluch blocking 2, low level 2, watermeter
• 3 relay outputs (powered) : flush valve 1, flush valve 2, inlet valve
• 3 relay outputs (dry contact) : dosing output 1, dosing output 2, alarm

• Integrated conductivity meter with automatic range switching
• Conductivity range according to the instrument probe cell constants from 0,1 to 1 00 000 µS/cm
• The instrument probe cell constants programmable from 0,01 to 10,00 cm-1
• Manual or automatic temperature compensation
• Duplicate conductivity meter and temperature reading as an available option
• Second cooling tower plant possible when card with two conductivity meters is installed.
• Status of second cooling tower control only in LCD display (not with LEDs)
• Security of program information against supply failure, as all program information is stored without accu
• Large capacity microprocessor with “Watchdog”, illegal “Operation code” and frequency monitoring
• Manufactured in accordance with EMC codes of practice;
  • by means of galvanic isolation between the micro-processor and the in- and output circuits, plus extra built-in filter
• Available for wall mounting (AS3050) and panel-mounting (AS3051)
• Available (input /output) : 24/24V, 115/115V, 230/230V

Software

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