30
Display
Function
Default
Display
Function
Default
OPENING PHOTOCELLS LOGIC:
Select the tripping mode of the opening
photocells.
They operate for the opening movement only:
they stop the movement and restart it when
they are released, or they reverse it immediately.
= Reverse immediately to closing
= Restart movement on release
ENCODER:
If the encoder is used, you may select its
presence.
If the encoder is present and enabled,
"decelerations" and "partial opening" are
controlled by the encoder (see relevant
paragraphs).
The encoder operates as an anti-crushing
device: If the gate strikes an obstacle during
opening or closing, the encoder immediately
reverses gate leaf movement for 2 seconds.
If the encoder operates again during the 2-
seconds reversing time, it stops movement
(STOP) without commanding any reversing.
If no sensor is supplied, the parameter must
be set on
. If there is the encoder, adjust
the sensitivity of the anti-crushing system, by
varying the parameter between
(maximum sensitivity) and
(minimum
sensitivity).
from
to
= Encoder active and
sensitivity adjustment
= Encoder disabled
Note 1
: to reset the programming default settings, check if the
edge input is closed (SAFE LED ON), and simultaneously
press keys
+, -
and
F
, holding them down for 5 seconds.
Note 2.:
modification of programming parameters comes into
effect immediately, whereas definitive memory storage
occurs only when you exit programming and return to
gate status viewing. If the equipment is powered down
before return to status viewing, all modifications will be
lost.
Pre-limit switch DECELERATION:
You can select gate deceleration before the
opening and closing limit-switches have been
tripped.
Time can be adjusted from
to
in
0.1-second steps.
If an encoder is used, the adjustment is not
determined by time but by motor revs, thus
obtaining greater deceleration precision.
= Deceleration disabled
from
to
= Deceleration enabled
Post-limit switch DECELERATION:
You can select gate deceleration after the
opening and closing limit-switches have been
tripped.
Time can be adjusted from
to
in
0.1-second steps.
If an encoder is used, the adjustment is not
determined by time but by motor revs, thus
obtaining greater deceleration precision.
= Deceleration disabled
from
to
= Deceleration enabled
ASSISTANCE REQUEST (combined with next
function):
If activated, at the end of countdown
(settable with the next function i.e. "Cycle
programming") it effects 2 sec. (in addition
to the value already set with the PF function)
of pre-flashing at every Open pulse (job
request). Can be useful for setting scheduled
maintenance jobs.
= Active
= Disabled
WORK TIME (time-out):
We advise you to set a value of 5 to 10 seconds
over the time taken by the gate to travel from
the closing limit-switch to the opening limit-
switch and vice versa.
Adjustable from
to
sec. in one-second
steps.
Subsequently, display changes to minutes and
tens of seconds (separated by a point) and time
is adjusted in 10 second steps, up to a maximum
value of
minutes.
Attention: the set value does not exactly
matchthe motor's maximum operating time,
because the latter is modified according to
the performed deceleration spaces.
PARTIAL OPENING:
You can adjust the width of partial leaf opening.
Time can be adjusted from
to
in
1-second steps.
If an encoder is used, the adjustment is not
determined by time but by motor revs, thus
obtaining greater partial-opening precision.
For example, with pinion Z20, partial opening
can vary from about 60 cm to 4 m.
CYCLE PROGRAMMING:
For setting countdown of system operation
cycles. Settable (in thousands) from
to
thousand cycles.
The displayed value is updated as cycles
proceed.
This function can be used to check use of the
board or to exploit the "Assistance request".
GATE STATUS:
Exit from programming, data saving, and return to
viewing gate status (see par. 5.5.1.).
Summary of Contents for 844ER
Page 21: ......
