TPS Blue M DC256 - Temperature Controllers

BLUE M
Blue M - - DC 146 Series Industrial Ovens, Models DC, DCW, DCI, DCC
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11.0 TEMPERATURE CONTROLLERS
11.1 Temperature Control
Several different non-profiling and profiling type temperature controllers may be used to control oven
temperature. Non-profiling type controllers are standard. Heating and cooling (when applicable) control
methods are basically the same for each controller class.
Heating of the oven is controlled using a time proportioned output of the controller, which will trigger one or
more Solid State Relays (SSR1 / SSR2 / SSR3) to conduct and provide power to each heater stack (bank)
employed. The heating circuitry must first be enabled by the heat enable OTP Contactor.
Note: For the Model DCI, heating of the oven can only begin once the initial purge cycle is complete. The
Heat Enable light on the control panel will then illuminate. The purge timer will be reset each time the oven
door is opened.
When the water cooled cooling coil is employed, non-profiling controllers normally utilize a Cooling Switch on
the main control panel to energize and open the Water Cooling solenoid valve to permit water flow through
the coil. An optional Cooling Event Output can also be used to activate the coil. This Event Output is used
with all profiling controllers.
Important: If a non-profiling controller also includes the Cooling Event Output, when in the Control Mode,
ensure that the Cooling Switch is in the OFF position on the main control panel.
11.2 Non-Profiling Type Controllers
Note: For the controllers labeled “Blue M (or Yokogawa)” below, both models employ the same basic
functions. The main difference between the two is that the Blue M model contains different OEM features
such as key and lamp labeling, and/or setup and operation features. Refer to the controller manual for
details.
Blue M Stat-350: (or Yokogawa UT350)
Temperature control is achieved with the Blue M Model Stat-350 controller. The Stat-350 is a single setpoint
type, 1/4 DIN controller with the following main features.
 Single Channel
 Automatic Control Only
 Auto-tuning, “SUPER” overshoot suppress function, and new
“SUPER 2” hunting suppress function
 1 Input Universal Process Input: Type J Thermocouple is used to
sense oven temperature
 1 Heat Control Output: Time Proportioned
 Up to 2 Contact Inputs
 Up to 3 Contact Outputs for Alarms / Events
 Support for Light Loader - LL100 PC-based Parameter Setting Tool
 Communications: RS-485, Modbus
YOKOGAWA UT350