REX - C SERIES

GENERAL DESCRIPTION

In the recent industrial temperature control applications, PID controllers are used everywhere from simple applications up to advanced applications. Even in a hobby application PID controllers are used. The REX- Century series are high performance controllers with easy key operations. Even an unskilled person can operate it. PID values are easily obtained by autotuning function only at a touch of the button. Our long experience and high technology in the industrial field have made it available.

FEATURES

4 - digit display and dual alarm system
Heat/Cool action for extrusion process (except REX C100).
LBA (Loop Break Alarm) and HBA (Heater Break Alarm) as option.
Application for UL and CSA approval under progress. (REX - C400, C900 only)
Supply voltage options include 100 to 240V AC, 24V DC and 24V AC.
Field selectable thermocouple types
Two-level operation method (SV level and PID level

Heat/Cool PID Action

The use of heat/cool PID action (deadband function) contributes to energy saving in applications where self-heat exists (example: extruders). On the contrary, the use of overlap function provides stable temperature control in the controlled object with large time constant.

Loop Break Alarm (LBA)

The LBA function starts measuring PV changes at the preset intervals after PID calculation value has reached 0% or 100% for detecting heater break and sensor break. Below are examples.

When PID calculations value is 100%

If temperature does not increase by 2°C or more within LBA time, LBA turns on.

The above examples are for reverse action. For direct action, the LBA action becomes reversed.

LBA deadband is available to suppress external disturbances.
Heater Break Alarm (HBA)

The HBA function requires a current detector for measuring load current. If the measured value becomes lower than the preset value, alarm is generated.