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Model 5C6-361,
5C7-362, 5C7- 365, 5C7-366, 5C7-367, 5C7-368, 5C7-371, 5C7-378, 5C7-379, 5C7-385, 5C7-386, 5C7-388 |
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 Overview Feature
Comparison of Different Models Specifications
Discussion
(Technical) Implementation
(Notes & Software) Pricing |
Overview
WORKS
WITH PELTIER MODULES OR RESISTIVE HEATERS, FANS, AND MORE!
The 5C7-36x, 5C7-37x and 5C7-38x Series temperature controllers provide automatic biphase heating and cooling control for Thermoelectric (Peltier effect, or TEC) modules for both cooling and heating applications. If a diode is added to the output these controllers are compatible with resistive heaters, fans, and many other DC voltage devices that proportionately alter operation based on the amount of power supplied. This also allows the controller to power a Thermoelectric module in conjunction with a resistive heater (for additional heating power), or other DC driven device.
The "H" bridge configuration of the solid state MOSFET output devices allows for the bi-directional flow of current through the thermoelectric modules. Highly efficient N-channel output devices are used for this control mode.
A Pulse Width Modulated controller, or PWM controller, is a type of switched-mode controller. Our PWM controllers use square waves of varying widths and at a high frequency to provide power to the "load" (heater/cooler). Low power dissipation and precision control of the load make this type of temperature controller perferrable to analog controllers.
With peltier modules it is necessary to have a smooth transition between heat and cool modes, especially when controlling the temperature of laser diodes or telecom components. Our controllers provide a smooth transition from one mode to the other.
Compensation can be made for the difference in the efficiency of a peltier module's heat and cool modes.
Once the desired set parameters are established, the PC may be disconnected and the controller becomes a unique, stand alone controller. All parameter settings are retained in non-volatile memory.
The user friendly, communications software requires no prior programming experience to establish operation. A command set is provided for qualified personnel to program a software interface or use as an embedded control.
Mechanically, the controller's printed circuit board is mounted to a metal bracket that is suitable for either horizontal or vertical orientation. Input and output connections are accessible via eurostyle screw type terminal strips, fast-on terminals, and a 0.100 center connector. ( Click for Photo ) The 5C7-378 is the only controller using Molex/AMP connectors (see the accessories for this controller as listed in the pricing at the bottom of this page). For your production purposes (with NRE fee), all of these controllers can be supplied with Molex/AMP connectors in place of the eurostyle screw type terminal strips.
Models
5C7-361, 5C7-366, 5C7-367, 5C7-368, 5C7-371 and 5C7-379
These controllers are PC programmable via an RS485 communication port for direct interface with a compatible PC (or interface to the PC with our "RS485/RS232 converter"). The "RS485 communications interface" has 1500 VAC isolation from all other electronic circuitry minimizing interference from noise or errant signals caused by common ground loops. The easily accessible communications link permits a variety of operational mode configurations. Field selectable parameters or data acquisition in a half duplex mode can be performed.This controller will accept at least 32 addressable devices, over a maximum of 4,000 feet of communications cable.Each controller has two sensor inputs. The second sensor input can optionally be used for remote set point adjustment. All thermistors are Fenwall Curve 16, but we can customize for other R-T curves.
The standard 5C7-361 uses
TR67 Series thermistors at –20°C To +100°C.
The standard 5C7-366 uses
The standard 5C7-367 uses
The standard 5C7-368 uses
The standard 5C7-379 uses
The standard 5C7-371 uses 0-5 vdc (4-20 ma with appropriate resistor) for the controlling sensor providing an internal resolution of 1 mv, and a 15KOhm@25°C thermistor as an auxiliary sensor. The controlling sensor signal can be provided by a Temperature Transmitter attached to Pltainum RTD, Thermocouple or other sensors.
Models
5C7-362, 5C7-365, 5C7-378, 5C7-385, 5C7-386 and 5C7-388
These controllers are PC programmable via an "RS232 communications interface". One RS232 COM port on your computer will configure and monitor one controller. The easily accessible communications link permits a variety of operational mode configurations.Each controller has two sensor inputs. The second sensor input can optionally be used for remote set point adjustment. All thermistors are Fenwall Curve 16, but we can customize for other R-T curves.
The standard 5C7-362 uses
The standard 5C7-365 uses
The 5C7-378 has 5 times better temperature resolution then the other controllers. This controller does not have the "expansion connector" that is available on the other controllers. The 5C7-378 is the only controller using Molex/AMP connectors as standard connectors for the RS-232 communications and the sensors (see the accessories for this controller as listed in the pricing at the bottom of this page). Maximum output amperage of this unit is 10 amps. However, although the controller requires 12 to 20 vdc to run, the load (TE module, etc.) can be any voltage from 2 to 20 vdc. You can use a dual voltage power supply, or two power sources, to run each separately. The standard 5C7-378 uses
The standard 5C7-385 uses 0-5 vdc (4-20 ma w/resistor) independent sensor inputs. Internal resolution is approximately 1 mv. Each sensor signal can be provided by a Temperature Transmitter attached to Platinum RTD, Thermocouple or other sensor. Use 2 of the same or use two different sensors.
The standard 5C7-386 uses
The standard 5C7-388 uses Type "T" Thermocouples at –200°C To +260°C, which is –328°F To +500°F.
CUSTOMIZATION
Custom temperature ranges
Custom or programmable
voltage/current
Custom dimensions
Fan control
Custom alarms
Ruggedized
Uniphase output
Various sensors
Rack mount versions
and more (inquire)
Biphase. The
controllers are fully solid state
"H" bridge operation with Automatic,
bi-directional heating and cooling
or we can custom build to uni-directional heat only, cool only, or
selectable
as bi-directional or uni-directional operation.Proportional
(P), Integral (I), and Derivative (D) controlON/OFF with an adjustable Deadband
(hysteresis)Feature
Comparison of Different Models above. See links to all related
thermistor
sensors in the left border menu, or under "Sensors" below.5KOhm@25°C -TR141
Series NTC thermistors for Models 5C7-362/365/379.10KOhm@25°C -TR91
Series or MA-100 NTC thermistors for the Model 5C7-365/366/378.15KOhm@25°C -TR67
Series NTC thermistors for Models 5C7-361/362/378.50KOhm@25°C -TR104
Series NTC thermistors for the Model 5C7-367/368/386.Type
"T"
Thermocouple - Model 5C7-388.Notes
on Ambient Operating TemperatureFrom Computer (from
PC)The Model 5C7-378 is capable of operating from an input supply voltage of 12 through 20 VDC, common to many available thermoelectric modules. However, by supplying load power sperately from the controller power, you can use loads such as thermoelectric modules that are anywhere frmo 2 to 20 vdc.The self-contained MOSFET output devices deliver load currents up 10 amperes. This unit will control with a finite temperature resolution of 0.01°C.
The other controllers on this page are capable of operating from an input supply voltage of 12 through 28 VDC, common to many available thermoelectric modules. The self-contained MOSFET output devices deliver load currents from 0.1 to 25 amperes (NOTE: consult appropriate installation instructions for power supply and heat sinking requirements for high current operation). This unit will control total load power up to 680 watts with a finite temperature resolution of 0.05°C.
We can custom build for fixed, or selectable, voltages and levels of power, such as fixed 5 VDC at 2 Amperes.
Output Signal
The output signal to the thermoelectric module is Pulse Width Modulated (PWM). It is 2700 Hz for the Model 5C7-388 controller, and it is PC selectable for either 675 Hz or 2700 Hz operation for the other controllers. Pulse Width Modulation averages the amount of energy provided to the module and reduces the extreme temperature excursions that are experienced with an "on / off" system. This tends to extend the life and reliability of the thermoelectric devices. In an optimal thermal system, the PWM control scheme affords control accuracy at the control sensor to within...
Tuning
- ±0.01°C for the Model 5C7-378
- ±0.1°C for the Model 5C7-367/368/386
- ±0.05°C for the other controllers
The controller tuning structure allows designation of a variety of control features. The computer set value provides for manual control of the output, either polarity, from 0% to 100% of load power. Proportional bandwidth (P) in degrees, integral reset (I) in repeats per minute, and the derivative rate (D) in minutes may be configured for P, PI, PD, or PID control. In addition, a deadband control (on/off) with an adjustable hysteresis may be selected. Differential temperature control is offered when two input sensing thermistors are used.
Set Temperature Input
The temperature can be set directly through our standard Setup program or other software.
Additional external set temperature input types may be selected for all controllers except the Model 5C7-378. They include a remote set temperature potentiometer, a 0 to 5 VDC signal, and a 0 to 20 ma current loop. These secondary inputs are used to define and "map" the secondary input to an adjustable temperature range. Differential set temperature control may also be selected from this configuration menu. All temperatures may be consistently displayed in °C. or °F.
Differential
control is available for all controlles and is accomplished by
selecting
the primary set temperature with the second thermistor input and
establishing
the offset with the computer set temperature. In other words, when
using
differential control you no longer set the temperature itself from the
computer, but rather the offset from the temperature sensed by the
second
sensor. For example, A +10 degrees offset means the control temperature
will always be held at 10 degrees above the temperature being sensed at
the second sensor. The control temperature will be the "differential"
between
Input 2 (the temperature at the second sensor, which becomes a
reference
temperature) and Input 1 (actual system temperature).
Control Output Modes
Two types of control output modes may be selected for all controllers except the Model 5C7-378. This determines the direction of the current flow through the thermoelectric module during the heat cycle. This current flow may be from Wire Point WP1 (+) to Wire Point WP2 (-). Alternatively, this current flow may be reversed from WP2 (+) to WP1 (-) as selected in the configuration menu.
Variac Mode
From the PC you can choose to bypass the controllers internal control algorithms and set the output power to a specific value. There are 120 negative and 120 positive power values. Using a Kajei temperature controller device driver you can programmatically specify the output power using various percentage values from -100% to +100%.
Alarms
Several alarm types may be selected. (With models other than the 5C7-378 the alarms provide a 5 VDC output at the expansion connector, rated for 25 ma of current.) The alarms consist of no alarm function, tracking alarm, and fixed value alarm. Alarm set temperature values are entered in the setup menu. The computer-controlled selection is available for additional embedded controller input/output options. The alarm setup menu also provides for selection of an alarm latching condition. The alarm sensor may be either the control temperature sensor or a secondary thermistor sensor.
The various alarms have the ability to determine the status of the output power to the thermoelectric module or auxiliary heater. Power may be maintained during an alarm condition or the main power may be shut down.
Model
5C7-378 Hookup
Temperature Stability
Temperature stability is a function of the resolution of the input temperature signal. The controller can hold temperature to the finest increment of the input temperature signal. The 5C7-361 and 5C7-362 can resolve temperature changes down to 0.05°C, or 0.03°C, or 0.01°C degrees Centigrade, depending on whether you are using a standard, customized, or custom built version. The 5C7-378 can resolve to changes of 0.01°C. The stability you achieve depends more on the design of the overall thermal system than on the controller's resolution.
If you start with the standard controller that has 0.05°C resolution and determine you need a controller with greater resolution, you can send the controller in for a factory modification that improves the resolution to better than 0.03°C.
Connections
A
console program for configuring the controller comes with the unit, but
you can go beyond the program provided and control the temperature
controller
by means of your own or other software:
FOR FIBER OPTIC COMPONENTS AND LASER DIODES...
Note: Prices shown are for the controllers only. Sensors, TE modules and power supplies may be available but are not included in the controller pricing.
Lead Time: The 5C7-361 and 5C7-362 are generally in stock and can be shipped in 2 to 4 days ARO. The other controllers are not generally maintained in volume in stock. Out of stock items may have a 1 to 3 week lead time.
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