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Mini-mite Tube Furnace
Holdback Function
The temperature ramp rate of the program is quicker than the furnace can achieve. the
program will wait until the temperature of the furnace catches up. e.g. If a Holdback value
of 10 is set and the program is set to ramp to a set point of 600°C, the program will reach
600°C, then go into an hold state; the hold indicator will light until the furnace or oven
temperature reaches 590°C, the program will then continue to control again.
The hold back will only apply once per Segment, therefore when control has been
reestablished, the hold back will not apply again to that segment, even if the furnace or
oven temperature go outside the hold back band. Each program can have its own
Holdback value assigned to it.
H.BACK can be accessed from Level 1 or Level 2. To set the hold back value:
1. Press SROLL
button until display reads, "H.back".
2. Press the UP
or DOWN
function.
Creating a New Program or Editing an Existing
Program
3216p is a 16 segment programmer consisting of eight ramp/ dwell pairs. Each ramp
consists of a controlled rate of change of set point to a target level. Each ramp is followed
by a dwell at that level. The ramp rate, target level and dwell time are set by the user.
The same steps are used when creating a new program and editing an existing program.
A currently active program cannot be altered. Go into reset mode before starting to create
or modify a program. Follow the steps below to create or edit a program.
1. 'PROG' can be accessed from level 1or Level 2.
2. Press the SCROLL
Main Controller: 1x8 & 5x16 Segment Programmable |
button to set holdback value or to turn off hold back
button until you reach the program parameter 'PROG'
Chapter 6
304243H02 | 6-42
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