Description of the Model 5C7-461 Temperature Controller

An RS485 communications link is provided for direct interface to a PC with a RS485 card or via an  "RS485/RS232 converter".  This allows the controller to be configured for different modes of operation from the PC. The RS485 communication interface is used to select or adjust field parameters or data acquisition in half duplex mode. Up to 32 units per interface are addressable over a maximum of 4,000 feet of communications cable.

The personal computer permits the monitoring of actual temperature, set temperature, percent of power applied to the load and alarm status. It allows selection of the set temperature, turning output power on or off, tuning the controller parameter settings, and displaying the current sensor selection.

Once the controller is configured, the PC may be disconnected and the controller can be left to operate as a stand-alone unit. Communications can be re-established at any time for tuning of the settings. All parameter settings are retained in non-volatile memory.

The controller package consists of a printed circuit card mounted to a metal mounting bracket that is DIN compatible and may be mounted either horizontally or vertically. The controller can be connected to operate from either 110 VAC or 220 VAC. Input and power outputs are made via .250 and .110 inch fast tab connections. The sensor inputs and RS485 connections are made via a Eurostyle screw terminal strip. A solid state relay output provides current capability of 15 amperes at either 110 VAC or 220 VAC. In addition, an alarm output solid state relay is provided which is rated for 0.5 ampere at either 110 VAC or 220 VAC plus a 5 volt drive rated at 20 ma. for an optional LED alarm monitor, solid state relay, or reed relay.

The PC permits the monitoring of actual temperature, set temperature, percent of power applied to the load, and alarm status. It allows selection of the set temperature, turning the power on or off, canceling an alarm condition by silencing the PC audio alarm, tuning the controller setting parameters and displaying the current sensor selection.

Controller tuning parameters consist of proportional bandwidth (P), integral gain in repeats per minute (I), and the derivative rate (D) for selecting P, PI, PD, or PID operation. An on/off operating mode with an adjustable hysteresis may also be selected. A controller configuration command allows for additional optional settings.

The configuration mode allows the operator to select the applicable type thermocouple or ±100 millivolt input, type of optional auxiliary input, set control limits for the application, give the controller an identifying name, select either heating or cooling mode, plus select and enable a protective password.

The three thermocouple selections have operating temperature ranges of...

• Thermocouple Type J: 32°F to 1382°F (0°C. to +750°C)
• Thermocouple Type K: -328°F to 2282°F (-200°C. to +1250°C)
• Thermocouple Type S: 32°F to 2642°F (0°C. to +1450°C)

• Input
• Isolated input for one (1) type J, K, or S thermocouple input with cold junction compensation or ± 100MV input.
• 500 volt input isolation.
• Output
• 15 Ampere, 110/220 VAC solid state relay output.
• Heating or Cooling mode.
• ALARM OUTPUT: 0.5 AMPERE, 110/220 VAC SOLID STATE RELAY AND 5 VOLT @ 20 MA. DRIVE FOR AN OPTIONAL LED ALARM MONITOR, SOLID STATE RELAY OR REED RELAY.
• Control algorithms: Proportional (P), Integral (I), and Derivative (D) that can be selected as P, PI, PD, or PID; or ON/OFF with an adjustable hysterisis.
• Alarm Modes: High and/or low temperature alarms, or tracking alarms that can be selected as latching or non-latching alarms. The alarms are reset through the communications interface or an optional switch.
• Temperature is set in degrees Fahrenheit.
• Temperature Range
• Thermocouple Type J: 32°F to 1382°F (0°C. to +750°C)
• Thermocouple Type K: -328°F to 2282°F (-200°C. to +1250°C)
• Thermocouple Type S: 32°F to 2642°F (0°C. to +1450°C)
• Stand alone operation capability.
• Non-volatile memory retention of parameters.
• Set point temperature can be set with a user supplied potentiometer and dial, or 4-20 mA, or 1-5 Vdc, with a programmable temperature range.
• Computer Interface
• RS485 Communications interface used for selecting or adjusting field parameters or data acquisition in half duplex mode. Up to 32 units per interface are adjustable over a maximum of 4,000 feet of communications cable.
• No computer programming experience is needed to use the communications software program.
• Command set provided enables users to program their own software interface or embedded controller application.

Connections

• This unit requires an AC cable that connects to the controller using two 0.25 inch quick connects (fast tab connections).
• The power connection of the heater or cooler to the relay is also made with the same type of connector as above.

A console program for configuring and monitoring the controller comes with the unit, but you can go beyond the program provided and control the temperature controller by means of your own software:

• For Programmatic Control: Requires appropriate capability in a programming language. McShane Inc. has some experience with using Microsoft Visual Basic for programmatic control of temperature, including temperature ramping. However, as usual, the best process control  language to use is the one you are already familiar with. For certain controllers, a DLL or other library is available - inquire. Upon written request the source code for the acccompanying, standard configuration and monitoring program can be provided. It is usually written in C. For multiple controller RS485 applications: we will sell 2 controllers initially so that you can test your concepts, and then the bulk upon approval.
• For Data Logging: We have no logging program at this time. You need to write one and so the above paragraph concerning "Programmatic Control" applies. (McShane, Inc. does have SOME experience with linking Visual Basic to Access, Microsoft SQL, Excel spreadsheet files, and text files.)

MODEL 5C7-461
   Quantity 01 price:  $199.00 each
   Quantity 25 price:  $182.00 each
   Lower prices are available at higher volume.

• General Notes on Pricing
• Controllers Only: Prices shown are for the "controllers only". 
• Currency: All prices are $US.