9
8 Segment & 4x16 Segment Programmable Models w/OTP
Programming the Controller
Thermo Scientific
Large Tabletop Muffle
37
Programming the Controller
The controller is capable of varying temperature or process value with time through programming. A
program is stored as a series of segments and can be run once, repeated a set number of times or run
continuously. To create a customized program using the controller parameters listed under “Controller
Parameters” at the beginning of this section, follow the procedures outlined in the proceeding sections
of this manual.
Creating a New Program or Editing an Existing Program
(4x16 Segment Programmable Models Only)
The same steps are used when creating a new program and editing an existing program with the
exception being that a new program starts with all its segments set to End in the tYPE parameter.
Temporary changes can be made to these parameters when the program is in the hold state but
permanent changes must be made in the reset state. Follow the steps below to create or edit a program.
1. Press the PAGE button until you reach the program list (ProG LiSt).
2. Press the SCROLL button until display reads, “PrG.n.”
3. Press the UP or DOWN button to select a number for a new program or to edit an existing
program.
Hb: Holdback
Holdback consists of a value and a type. If the measured value lags behind the setpoint by an
undesirable amount during a ramp or dwell, the holdback feature can be used to freeze the program at
its current state (the HOLD light will flash). The program will resume when the error comes within
the holdback value.
OFF
: holdback is disabled.
Lo (Deviation Low Holdback)
: holds the program back when process variable deviates below the
setpoint by more than the holdback value.
Hi (Deviation High Holdback)
: holds the program back when process variable deviates above the
setpoint by more than the holdback value.
bAnd (Deviation Band Holdback)
: combines the features of the high and low deviation holdback in
that it holds the program back when the process variable deviates above or below the setpoint by more
than the holdback value.
To set the holdback type:
1. Press the PAGE button until you reach the program list (ProG LiSt).
2. Press the SCROLL button until display reads, “Hb.”
3. Press the UP or DOWN button to toggle between “bAnd, Hi, Lo and OFF. ”
The value set in this parameter is always for the entire program.
Summary of Contents for F30400
Page 6: ...Contents 4 Large Tabletop Muffle Thermo Scientific...
Page 10: ...1 Safety Information Warning 8 Large Tabletop Muffle Thermo Scientific...
Page 14: ...2 Introduction Principles of Operation 12 Large Tabletop Muffle Thermo Scientific...
Page 18: ...4 Unpacking 16 Large Tabletop Muffle Thermo Scientific...
Page 28: ...7 Single Setpoint Models w OTP Tuning 26 Large Tabletop Muffle Thermo Scientific...
Page 50: ...11 Furnace Loading 48 Large Tabletop Muffle Thermo Scientific...
Page 62: ...15 Replacement Parts List 60 Large Tabletop Muffle Thermo Scientific...
Page 64: ...16 Ordering Procedures 62 Large Tabletop Muffle Thermo Scientific...