CDA CST Manual de instalación descargar pdf (Pagina 26)

350-2100 cfm Dryers Chapter 4: Control Panel 25 of 58

4-5 Temperature Controller LED Indicators

Process Value Numeric LED

During normal operation, this red LED on the control displays the process temperature at the

"To Process" thermocouple. It also lists parameters during setup and error messages if an

error occurs.

Set Value Numeric LED

During normal operation, this green LED on the control displays the process set point you

want the dryer to maintain. It also displays parameter and pre-set function values during

setup.

Output LED

This orange LED lights when the control output energizes the process air heater.

Remote LED

This lights when remote operation occurs on dryers equipped with optional communications.

Shift LED

This orange LED lights if the optional Shift Set switch is closed. The process temperature

will be changed by the amount set in the

value in the Level 1 parameters. To shift to a

lower value, be sure to enter a negative value.

Auto-Tune LED

This orange LED flashes during the Auto-Tune sequence. The controller will automatically

determine the proper P.I.D. values for the operating conditions. See Section 6-11.

Alarm One LED - High Temp Alarm

This lights when the process air temperature has risen more than 25°F [factory default] from

the setpoint. The alarm relay in the PLC is energized when this LED is lit.The audible/visual

alarm will sound if the dryer is so-equipped. All heaters turn off and the blowers stay on to

cool the heaters. It is adjustable - see Section 5-5.

Alarm Two LED - Low Temp Alarm

This lights when the process air temperature drops more than 25°F [factory default] from the

setpoint. The alarm relay in the PLC is energized when this LED is out. The audible/visual

alarm will sound if the dryer is so-equipped. It is adjustable - see Section 5-5.

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CDA CST Manual de instalación Pagina 26