Applications

■Cascade temperature control in diffusion furnace

If there is a large time lag between the controlled object and the heat source, the cascade control could be suitable. The control output from the primary controller (Master) is input into the secondary controller (Slave). The secondary controller conducts temperature control of the heat source while correcting the temperature setpoint with the control output from the primary controller. Cascade control can be achieved with a single FZ400/FZ900.
＞＞Merits of introducing this system
  • Overshoot could be suppressed in a control system where time delay exists.
  • Cascade control can be achieved with a single FZ400/FZ900.

Typical models

Digital Controllers (Process and Temperature Controllers)
FZ400/FZ900

  • Measurement accuracy: ±0.1% of displayed value
  • Sampling time: 0.05 sec.
  • 11-segment 5 digit LCD display
  • Front loader communication port
  • Dual input function (FZ400 / FZ900)
  • Plug-in construction (FZ400 / FZ900)

Single Phase Power Controller
THV

This type of product receives analog signal such as 4-20mA from an external controller and regulate power to the heater continuously and sensitively. Single phase and three phase types are available.