Notes On Connections; Phototest - Nice MINDY A400 Manual Del Usuario

2.4.3) Notes about connections
Most connections are extremely simple; many of them are direct
connections to a single user point or contact.
The following figures show examples of how to connect external
devices.
Gate open indicator connection
24V
1,5W
17
18
C onnections for an external radio
1 2
1 2 3 4 5 6 1 2
15
16
22
17
23

2.4.4) Phototest

The PHOTOTEST function is a standard feature on the A400
control unit. This is an excellent solution as regards the reliability of
safety devices and puts the control unit and safety devices into
"category 2" as per UNI EN 954-1 standard (ed. 12/1998).
Whenever a manoeuvre is begun, the relative safety devices are
checked and only if everything is in order will the manoeuvre start. All
this is only possible if a special configuration of the safety device
connections is used; in practice, the "TX" photocell transmitters are
powered separately from the "RX" receivers.
The SYNCHRONISM function (available on all NICE photocells) is the
only way of ensuring that two pairs of photocells do not interfere with
each other.
Connection diagram with just the PHOTO photocell
13 14 15 16 17 18 19 20 21 22 23
TX
PHOTO
1 2
2
6
Slow flashing means the gate is
opening.
Fast flashing means the gate is
closing
Lamp permanently on means the
gate is open.
Example of connection for a 24Vac
powered external radio.
Channel 1 ➔ STEP-BY-STEP
Channel 2 ➔ AUX
LED OK
P1 P2 24 25
RX
1 2 3 4 5
Key switch connection
STEP BY
STOP
STEP
COM COM
NA NC
17
22
19
17
STEP BY
AUX
STEP
COM COM
NA NA
17
22
23
17
The inputs subject to the phototest procedure are PHOTO, PHOTO1 and
the AUX input if configured as PHOTO2. The Phototest phase takes place at
the beginning of each manoeuvre and cannot be disabled; therefore, if one of
these inputs is not used, it must be connected to terminal n°13, please
consult the following figures for examples of connections.
Photo, photo1 and photo2 connection diagram.
13 14 15 16 17 18 19 20 21 22 23
TX
PHOTO
1 2
TX
PHOTO 1
1 2
TX
PHOTO 2
1 2
3
Example 1
How to connect the switch in
order to perform the STEP-BY-
STEP and STOP functions.
Example 2
How to connect the switch in
order to perform the STEP-BY-
STEP function and one of the
auxiliary input functions
(PEDESTRIAN, OPEN
CLOSE ONLY...).
LED OK
P1 P2 24 25
RX
1 2 3 4 5
RX
1 2 3 4 5
RX
1 2 3 4 5
ONLY,