Cardin Elettronica CDR-RED2.0 Guia página 4

Installation and adjustments
No initial set up or adjustments are required, due to the automatic signal-
tracking (AST) feature, which automatically adjust each individual channel
on the system.
1 Use the brackets supplied with the light curtain (at least 2 pcs, with max
distance of 135 cm) to mount the transmitter (TX) and receiver (RX) facing
each other and correctly aligned.
2 Correct alignment is achieved when the front cover of the light curtains
are parallel and when a virtual line connecting top of the transmitter and
receiver are perpendicular to both transmitter and receiver front cover.
3 Wire the sensor according to the wiring diagram. Make sure the load does
not exceed 100 mA.
4 Check for correct wiring. Select blanking function if required.
5 Turn power on.
6 The status indicator (red LED) on the RX will flash quickly when the AST
is active.
7 When the power on indicators (green LEDs) are on, the system is operating.
If the Status indicator (red LED) is constant on the RX it cannot see the
transmitter.
8 Notice that the photoelectric strips must not be moved after the power to
the RX is turned on.
TX test input - response time
The transmitter can be externally disabled and enabled via the control wire
(black wire) for test purposes. To activate the test input, please refer to
"Transmitter Model" table. Make sure no object is present in the detection
area when transmitter is disabled for test. When the transmitter is disabled,
the receiver will change its output.
The test input on the TX has to be activated for a minimum time T
to ensure that the output of the RX will switch over.
On activation of the TX, test input, the output of the receiver will switch over
within a the maximum time T
on
When the test input of the TX is deactivated the output will be switched back
within a certain maximum time T
The time T
is longer than T
r on
minimum duration.
Make sure that the black wire on the TX is not connected to the brown wire
when the power supply is in Vac.
If this happens, the TX will function incorrectly but will not suffer damage.
Note: Refer to the TX test input response time table and graph.
T
Number of channels
on
10 – 24 25 ms
active
Test input
not active
Ton
active
RX output
not active
Output logic
Detection
.
.
off
in order to ensure a complete test cycle of
(max.) T T (min.)
off r
50 ms 25 ms
Tr
Toff
Output mode Yellow Led
N.O.
Off
Open
N.C. On
Closed
Dynamic Blanking Function
The dynamic blanking function can be disabled or enabled externally via
the RX control input supplied by the white wire. The input will only accept
DC voltage. If you power the receiver using AC voltage, the blue RX wire
must be connected to GND (0V) on the device that is controlling RX input.
All the infrared light beams can be blanked out (made inactive) without
changing state of the output of the receiver by moving a non-transparent
object, as the door leaf, between the RX and TX from top of the rails (wire
end) and downwards to the lowest beam. Notice that the bottom part of the
door has to provide an obstruction of the beams of at least 55 mm vertical
height, in order for the blanking process to function correctly. Beams are
blanked in (activated) when the door motion is reversed.
The light curtain supports partial opening of the door, for energy saving or
ventilation. However, notice that the stop either has to be in the zone with
45mm beam spacing or then the bottom part of the door leaf has to obstruct
the beams over 200mm, keeping the lowest beam obstructed when stopped.
This limitation exists for safety reasons; the light curtain shall not respond with
permanent blanking of beams for objects just passing through the beams
and thereafter taken out of the active zone.
All beams will stay blanked, as long as the lowest beam, at the bottom of the
rails is obstructed. Make sure that the lowest beam is kept well obstructed,
when door has finished closing.
Maximum door closing speed 1,9 m/s.
There is no restriction on maximum speed when the door is opening.
When a blanking object of 50 mm vertical height is passing areas with 180
mm beam spacing the minimum speed of the blanking object is 0.18 m/s.
If the blanking object has a size so at least one beam is always obstructed
there are no minimum blanking speed.
in order
r
Notice that the actual speed of the bottom door edge can fluctuate for a
non-rigid door construction and it is advised that the door speed therefore
has to be set lower than listed in the table above, in order not to exceed the
maximum speed limit of the light curtain while the door is closing.
Be aware that side to side movements of a round bottom door edge will also
contribute to the fluctuation of the obstruction speed. It is therefore best to
have a horizontal straight edge for obstruction of the light beams.
TROUBLE SHOOTING
• The yellow LED on the receiver RX is flashing
Probable cause
Cross talk from another barrier or
other poweful light sources.
• When the receiver is powered up the red LED of the RX continues to flash
rapidly. The green LED is ON.
Probable cause
The barriers are out of sensing
range or TX ia not active (ON) or
an object is obstructing one or
more beams.
• The Green LEDs on TX-RX are on. The red LED on the RX is on. The yellow
LED on the RX is off.
Probable cause
The Test input is activated or the
barriers are out of sensing range.
Corrective action
Invert the postion of the TX and RX.
Corrective action
Check the sensing range and for
objects between the TX and RX.
Check that the TX is powered up and
replace if necessary.
Corrective action
Deactivate the test input on the TX and
RX or check the sensing range.