Notes About Connections - Nice Mindy A60 Mode D'emploi

3.5) Notes about connections

For the most part, connections are easy; a lot of them are direct connections to a single user point or contact but some are a little more
complex:
All the single-phase asynchronous motors need a capacitor for them to work properly; some gearmotors have this capacitor already con-
nected inside while others have to have the capacitor connected externally. In this case, the capacitor must be connected between the
motor's OPEN and CLOSE phases. To be more practical the capacitor should be connected directly inside the unit.
The "Phototest" function improves the reliability of the safety devices
and puts the control unit and safety photocells in "category 2"
according to EN 954-1 standard (ed. 12/1996).
Each time a manoeuvre is begun, the related safety devices are
checked and the manoeuvre is started only if everything is in order.
Should the test be unsuccessful (the photocell is blinded by the sun,
cables have short circuited, etc.) the failure is identified and the
manoeuvre is not carried out.
To enable the Phototest function:
• Set Dip Switch 10 to ON
• Connect the safety devices as shown in fig. 5 (when using the
PHOTO output alone), or as shown in fig. 5a (when using PHO-
TO1 as well).
The photocell transmitters are not powered directly from the ser-
vice output, but through the dedicated PHOTOTEST output. The
maximum current available at the PHOTOTEST output is 75mA (3
pairs of photocells).
• Power the receivers directly from the service output of the control
unit (terminals 17-18).
8
The photocells are tested as follows: when a movement is required,
all the receivers involved in the movement are checked to make sure
they give their consent, then power to the transmitters is discon-
nected; next all the receivers are checked to make sure they signal
the fact by withholding their consent; the transmitters are then
powered and the consent of all the receivers is verified once more.
Only if this sequence is successfully carried out will the manoeuvre
be performed.
It is always a good idea to activate the synchronisation function by
cutting the jumpers on the transmitters. This is the only way to make
sure that two pairs of photocells will not interfere with each other.
Read the instructions for "SYNCHRONISED" operation in the photo-
cell manual.
If an input subjected to PHOTOTEST is not being used (see PHO-
TO1) but you still require the phototest function, connect the unused
input with the PHOTOTEST output (terminals 19-24) using a jumper;
see fig. 5a.
If at a later time the Phototest function is no longer required, set Dip-
Switch 10 to the OFF position.
5
5a