Key Definitions - Lakeshore 340 User Manual

4.4.7

Key Definitions

Key
AutoTune
Zone Settings
Ramp
Program
P
I
D
Control Setup
Heater Range
Heater Off
Control Channel
Loop 1
Loop 2
Setpoint
Manual Output
Input Setup
SoftCal
Display Format
Scan Setup
Curve Entry
Interface
Alarm Setup
Math Setup
Analog Outputs
Alarm Reset
Math Reset
Options
Front Panel Operation
Lake Shore Model 340 Temperature Controller User's Manual
Displays the AUTO TUNE screen to set Auto P, Auto PI, or Auto PID control mode.
Displays the ZONE SETTINGS screen which specifies P, I, D, Manual Output, and
Heater Range for up to 10 Temperature control zones.
Displays the RAMP SETUP screen which turns ramp on or off and selects ramp rate.
Displays the PROGRAM MODE screen. Allows the user to Run an internal program,
Terminate a program, Edit a program, or Clear program memory.
Allows direct setting of the proportional (P) control parameter.
Allows direct setting of the integral (I) control parameter.
Allows direct setting of the derivative (D) control parameter.
Displays the CONTROL SETUP screen which enables the control loop, establishes
power up status and setpoint units, sets heater resistance and control mode, and turns
the filter on or off. Press the More key to display the CONTROL LIMITS screen which
sets the temperature, slope, maximum heater current, and range.
Allows direct setting of Loop 1 heater range.
Immediately turns off Loop 1 heater.
Allows direct setting of the sensor feedback channel for a control loop.
Displays Control Loop 1 parameters and status on lower three lines of display.
Displays Control Loop 2 parameters and status on lower three lines of display.
Allows direct setting of control setpoint.
Allows direct setting of manual output control parameter.
Displays the INPUT SETUP screen which selects the sensor type and curve number.
Other sensor parameters can be overwritten, but this changes sensor status to
"Special." Only curves appropriate to the sensor type display.
Displays the SOFTCAL screen which accepts and stores SoftCal curves.
Displays three screens (use the More key to toggle between the screens):
1. The READING DISPLAY FORMAT screen sets the number of readings (1 thru 8)
shown in the normal display and assigns an input and data source to each.
2. The CONTROL DISPLAY FORMAT screen sets lower three lines of the display.
3. The MISC. DISPLAY FORMAT screen sets display contrast, back lighting, and
keypad lock.
Displays the EXTERNAL SCANNER SETUP screen to set external scanner support.
Displays the CURVE ENTRY screen which edits, copies, or erases temperature
response curves.
Displays the COMPUTER INTERFACE screen which sets IEEE-488.2 and Serial
interface parameters.
Displays the ALARM SETTINGS screen which enables or disables alarms and sets
various alarm parameters.
Displays the MATH COMPUTATIONS screen which sets Max/Min and Filter
parameters. Press the More key to see the LINEAR EQUATION screen.
Displays the ANALOG OUTPUTS screen which specifies Mode, Bipolar, Status, and
other parameters for Analog Output A and B.
Immediately resets all latched alarms.
Immediately resets all Max and Min values.
Displays four screens:
1. The DIGITAL I/O screen manually sets the digital inputs and outputs.
2. The RELAY & BEEPER SETUP screen allows the user to choose alarm or manual
control for relays and to turn the beeper on or off.
3. The DATE & TIME screen is used to set real-time clock.
4. The REVISION INFORMATION screen displays the controller serial number and
revision history.
Use the More key to toggle between the screens.
Description
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