Proportional Cycle-Time; Cycle-Time Selection Methods; Cycle-Time Recommendations; Autotune Calculated Cycle-Time - CAL Controls 3300 Operating Manual

The choice of cycle-time is influenced by the external
switching device or load. eg. contactor, SSR, valve. A setting
that is too long for the process will cause oscillation and a
setting that is too short will cause unnecessary wear to an
electro-mechanical switching device.

CYCLE-TIME SELECTION METHODS

The following methods of cycle-time selection may be used:
Autotune calculated
After Autotune has been run and completed the calculated
cycle-time can be manually accepted or adjusted to suit the
switching device. For selection method see Select Autotune
Calculated Cycle-time.
Pre-select Autotune cycle-time
The controller can be programmed to automatically accept
any calculated Autotune cycle-time. For selection method
see Pre-Select Automatic Acceptance of Any Autotune
Cycle-time, page 10.
Pre-select before Autotune
The controller can be programmed manually with any
cycle-time between 0.1 and 81 sec. This cycle-time will not
be changed by any Autotune functions. For selection method
see Pre-Select Cycle-time Before Autotune, page 10.

PROPORTIONAL CYCLE-TIME

Factory set
To use the 20 sec factory set cycle-time no action is needed
whether autotune is used or not.

CYCLE-TIME RECOMMENDATIONS

Output Factory
Device Setting
Internal relay
20 seconds
rLY/rLY1
Internal relay
20 seconds
rLY2
Solid state
20 seconds
drives
SSd/SSd1/SSd2
To Select AUTOTUNE CALCULATED CYCLE-TIME
On completion of Autotune enter program mode.
Select
CYC.T
The controller will now alternately display
20 (the factory setting).
To view the calculated optimum cycle-time press and hold
the button then press and hold
The controller will display the calculated cycle-time
and eg. A 16 . This indicates that the calculated
CYC.T
cycle-time is 16 seconds.
Recommended Load max
Minimum (resistive)
2A/250 Vac
10 seconds
10 seconds 1A/250 Vac
Externally
0.1 seconds
fitted SSR
(n/a)
and
CYC.T
until indexing stops.
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