Setting Cycle Timers & Auto Close Times
The control board has pre-set cycle times which are used to set the maximum time the controller will drive the motors
in the open and closed directions. The pre-programmed time for the open and close cycle timer’s is 60 seconds. The
control board also has a pre-set pedestrian access time of 5 seconds which is intended to open the motor connected
to M1 output only part way. If these default times do not suit your needs simply use the procedure below to adjust
them. Note the same procedure can be used to adjust the auto-close times.
1. Place the slide switch into the “set” position
2. Adjust the timer’s value by pressing and holding the required push button for the desired time.
3. Repeat step 2 for the next timer (if desired).
4. Place the slide switch back into the “RUN” position.
5. Test operation.
Make sure that the slide switch is placed back into the “RUN” position before testing the new timer value.
As you can see the procedure used to set each timer’s value is the same only the push button used changes. Each push
button is clearly labelled underneath as to which timer’s value it sets. Note when setting the OPEN, CLOSE and
PEDESTRIAN cycle times the controller will drive the motors as if a “real” cycle is being executed. The difference being
that the motors will stop as soon as the button is released, or the limit switches are reached. The OPN status LED on
the control board will flash at 1 second intervals to assist setting times. Note when setting the OPEN and CLOSE cycle
times when limit switches are used, release the push button a few seconds after the limit switch cuts motor power.
This allows for the motors to slow down over the life of the operators without the need to adjust again.
VARIABLE SPEED DRIVE (INVERTER)
*WARNING: VSD units are highly sensitive to dirty power, or power with a modified sine wave. Because of this,
it is forbidden to use a portable generator to operate these units, even just in the initial commissioning stage, as the
possible variable voltage and altered sine wave will at least cause the unit not to work correctly and may lead to failure
of the VSD.
UPS systems can be used but have to be high-quality that produce a pure sine wave. Use of cheap inferior UPS will
lead to incorrect operation and possible failure of VSD.
VSD units inherently produce a very low current leakage to earth, so to conform to RCD protection regulations, a super
immune RCD like the Clipsal 4 series range may have to be used in cases of nuisance tripping. Alternatively, the
internal filter circuit will have to be de-activated as per instruction in the Delta VSD EL manual.
Because of this earth leakage, the protective earth has to be adequately sized, and tested to be of low enough resistance
no greater than that allowed in AS/NZ 3000:2018 in which to reduce touch voltage potential on the metal surfaces of the
operator.
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