Barnstead F62700 Operation Manual - Programmable Models

16

Operation of 4 Ramp & 4 Dwell

Programmable Models

Models F62730-80, F62730-26-80, F62730-33-

80, F62735-80)

This controller consists of a microprocessor based three-

mode (Proportional, Integral, Derivative), programmable

temperature controller with “Fuzzy” logic capability, pro-

grammable over-temperature protection and appropriate

output switching devices to control the furnace. The digital

readout continuously displays chamber (upper display) and

setpoint (lower display) temperatures unless the “SEL” but-

ton is depressed.

The programmable control can be used as a single set

point control or as a programmable control.

Single Set Point Operation

To use as a single set point control simply push “UP” or

“DOWN” button to choose a specific temperature.

1.

The set point temperature presently set in the

control will be read out on the lower display

2.

To change this set point, depress the “UP” or

“DOWN” button until the desired set point value

is displayed, then release the button.

3.

At this point, the furnace will begin to heat if the

new set point temperature you have chosen is

higher than the present chamber temperature.

Programmed Operation

Control Parameters

You can gain access to the control parameters by holding

the “SEL” button depressed for about 3 seconds. “LoCt” will

be displayed in the upper display.

Operation of 4 Ramp & 4

Dwell Programmable Models

WARNING

To avoid electrical shock, this furnace must

have the door switch operating properly.

NOTE

For optimum control of a single set point opera-

tion, set the “CTrL” parameter to “FUZY” to take

advantage of the controller’s fuzzy logic capa-

bilities.

NOTE

The furnace will begin to heat to the current set

point temperature when you turn the power

switch “ON.” To examine the control parameters

without heating the furnace, depress and hold

the “DOWN”button until the setpoint (lower) dis-

play reads “20”.