TM 5-3895-374-24-2
955-257
4.5 MANUAL TUNING (all models)
The following tuning displays are always available in the TUNE loop. When SELF TUNE is used (Models 2003 and 2004
only) the first three displays will show the PID values selected by the SELF TUNE program. You can change these values
if necessary. These same displays are used if you want to manually tune the primary output (all models). Refer to Section
4.7 for a suggested tuning method.
PR BAND1
Set a proportional band (PR BAND) of 1 to 2001 of Span using the arrow
XXX%
keys. Factory preset at 5% of Span. Push the PARAM DISPLAY key to
advance to the next display.
RESET 1
Set a RESET of 00.00 to 20.00 Repeats per Minute using the arrow keys.
XX.XXR/M
Factory preset at 0.25 R/M. Setting RESET to 00.00 turns RESET OFF.
RATE 1
Set a RATE of 0.00 to 5.00 Minutes using the arrow keys. Factory preset
X.XX M
at 1.00 Minutes. Setting RATE to 0.00 turns RATE OFF.
When a secondary COOLING or ON/OFF HEATING output is included in your controller, a second set of displays follows
for tuning of this output.
AUX DB
For an ON/OFF secondary output ONLY, select an auxiliary deadband (AUX
XXX %
DB) of 0.25, 0.50 or 1.00% of Span using the arrow keys. Factory preset
at 0.25% of Span.
CYCTIME2
For Time Proportional secondary output ONLY, set a cycle time 2 (CYCTIME)
XXX SEC
of 1 to 60 seconds using the arrow keys. Factory preset at 15 seconds.
PR BAND2
Set a proportional band 2 (PR BAND) of 1 to 200% of Span using the arrow
XXX%
keys. Factory preset at 5% of Span.
RESET 2
Set RESET 2 from 00.00 to 20.00 Repeats per Minute using the arrow keys.
XX.XXR/M
Factory preset at 0.25 R/M. Setting RESET 2 at 00.00 turns RESET 2 OFF.
RATE 2
Set RATE 2 from 0.00 to 5.00 Minutes using the arrow keys. Factory
X.XX M
preset at 1.00 Minutes. Setting RATE 2 to 0.00 turns RATE OFF.
Tuning has now been completed. At this display you have several options.
END OF
The LAST key will back up displays to review or change settings. The
TUNE
PARAM DISPLAY key will repeat the TUNE loop from the top. The RETURN key
will exit the TUNE loop and return to the operator displays.
NOTE:
You can only extinguish the TUN indicator by pushing the RETURN key while at the
END OF TUNE display.
ECLIPSE INSTRUMENTATION DIVISION
page 3-1097
