Despatch Protocol Plus Controller (Heat Only) - Manual (Page 29)

Protocol Plus Owner’s Manual O PERATION
Version 2 29
Copyright © 2010 by Despatch Industries.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Table 3. Parameter Definitions and/or Ranges.
Parameter
Definition and/or Range
Profile # Eight profiles are available
Segment # Program recipe segments one through eight. Give each segment its own set
of events, ramp and soak times and soak temperature.
Ramp Time Time required to move oven temperature from one setpoint to another.
Values between 0 and 99:59 are allowed.
The Protocol Plus controller stores profile ramp and soak times without units.
Times are set as hours and minutes (HH:MM) or minutes and seconds
(MM:SS). The setpoint automatically increments from the actual temperature
to the soak temperature.
EV1 through 4 Program from one to four events into the ramp time portion of each segment.
Events typically involve actuating/disabling relays to close/open valves or
perform other relay-controlled functions.
NOTE: Events actuate only when the controller has the optional relay cards
installed and is programmed for an event.
Soak Temp Enter the temperature setpoint of a particular segment. The setpoint can
range from -18 to 540 °C (0 to 1000 °F).
Soak Time Enter the duration of soak. Soak Time can range from 0 to 99:59.
EV1 through 4 Program from one to four events into the soak portion of each segment.
Events typically involve actuating/disabling relays to close/open valves or
perform other relay-controlled functions.
NOTE: Events actuate when the controller has the optional relay cards
installed and is programmed for an event.
Hi Limit SP Enter the high limit setpoint. If the temperature exceeds this value, hi-limit
will alarm and shut off the heater.
Loop From Identify segment number to loop from.
Loop To Identify segment number to loop to.
Loop Number Enter value from 1-99 to preset the number of times to run the loop
established in “Loop From” and “Loop To.”
Link to Pro Enter value to instruct profile in steps to take when the profile ends. Values
include:
· STANDBY: Holds temperature setpoint while keeping event relay(s) at
last status, actuates cycle relay(s)
· STOP: Turns heater and all relays to OFF status
· HOLD: Holds temperature setpoint and all relays at last status, at end of
profile
· Value 1 – 8: Jump to specified profile
Guaranteed
Soak Band Enter value that determines if the process temperature has deviated from the
setpoint. If the process temperature deviates from the setpoint by more than
the “Guaranteed Soak Band” value, the soak timer is placed in a hold
condition. The timer continues when the process temperature falls within
range.