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Maxim III

Maxim IIIThe MAXIM III Controller is a state of the art digital processing system that has the capability of controlling various types of industrial, commercial and domestic systems. The MAXIM III can operate as a standalone device, using its own universal inputs and analogue and digital outputs to receive information and control external equipment, or as part of a network of devices that support Global NetComms.

 

 

MAXIM III Controllers are designed for mounting inside a control cubicle and offers a varierty of inputs and outputs enabling it to monitor and control all types of external plant and equipment. Although the MAXIM III is flexible, it is primarily designed for the air conditioning and building automation industry.

The MAXIM III's configuration program is developed on a computer using a Windows based program. This allows the user to configure the internal processes of the MAXIM III by using a graphical programming tool. The user places various process blocks and interconnecting lines to design the required control algorithm for the system.

The configuration program can be downloaded to the Maxim III with an RS485 serial link, using the connector on the right side of the case to link to the computer via a 485/232 converter, or with an optional Ethernet link, using the RJ45 connector on the bottom right side of the case. These links may also be used to upload logged data or the program back out of the controller for modification or debugging purposes.

 

KEY FEATURES

  • 500 millisecond cycle/scan time
  • 20 configurable universal inputs
  • 12 digital relay outputs
  • 8 analogue outputs
  • Optional user interface on a 4 line, 20 character LCD display
  • Optional Ethernet connection for Net Comms
  • Status of I/O points displayed on LCD
  • 80 user defined watches (up to eight pages of up to 10 watches)
  • Data logging of 2MBytes, up to 300,000 readings
  • 1 RS485 serial communications port for Net Comms
  • 1 RS485 serial communications port for Global Comms
  • User Selectable Baud Rates:
    • Net 9600 Global 4800 OR
    • Net 57600 Global 38400
  • All wire connections by 2.5mm plug-in screw terminals
  • Program resides in non-volatile Flash Ram
  • Real Time Clock, battery backed for approximately 5 years

 

APPLICATIONS

  • Air conditioning and heating systems
  • Lighting control
  • Time clock controller
  • Monitoring device
  • Distributed I/O points controller
  • Cold/Freezer Rooms

 

APPROVALS

  • EN 61326:1998 for CE Marking and C-Tick Labelling
  • Title 47 CFR, Part 15  Class A for FCC Marking
  • UL listed to UL916, File Number E242628

 

SPECIFICATIONS

Power Supply
 24VAC ± 10% @ 50/60 Hz.
24VDC ± 10%.
Transformer nominal rating of 10VA.
Temperature Ratings 
Storage 0 to 50°C non-condensing.
Operating 0 to 40°C non-condensing.
Inputs

20 Universal Inputs, configurable via software to either:

  • Dry Digital Inputs
  • Voltage Digital Inputs
  • 10K Thermistor Inputs
  • 0-10V DC
  • LUX sensor input (Light sensor OR P12 LDR)
  • Dry Duty Cycle Inputs
  • Voltage Duty Cycle Inputs
  • Dry Pulse Counter Inputs
  • Voltage Pulse Counter Inputs
Outputs

12 Digital Outputs:

  • 12 x normally open relays (2 amp @ 24VAC) supplied by a Class 2 Transformer
  • Recomended use of pilot relays when switching high voltage/inductive loads

 

8 Analogue Outputs:

  • Can be configured individually as either linear 0-10VDC or PWM outputs
  • Output Load > 2kOhms

 
Battery
Type CR-2032 Lithium
Nominal voltage 3 Volts
Shelf life ~5 Years, dependant on ambient temperature
Enclosure
Rectangular case made from flame retardant ABS plastic in accordance with IEC695-2-1 (HD444-2-1) as of EN6335-1, A2 and IEC707 (AS/NZS2420) listed under UL94
Dimensions (max): 224mm(w) x 115mm(h) x 72mm(d)
Data Logging
Data Logging can be assigned to hardware and software points
Up to 300,000 time stamped readings
2 Mbyte non-volatile flash RAM
All logged data points can be extracted by using the MAXtract Software tool
Communications

RS485:
5 way plug in connector for local/remote computer access for purposes of uploading, downloading and monitoring configuration programs and the extraction of logged data, via a 485/232 converter.

Ethernet:
An optional RJ45 Ethernet port for PC and Internet access to the Maxim III Controller and other devices connected to it in an Innotech Net Comms network. This has the same functionality as an external RS485 to Ethernet Converter.

 

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