Notes On Connections; Initial Start-Up And Electrical Connections - Moon MC424 Installationshandbuch

PHOTO 2
DISABLED
2.4.1 - Notes about connections
Most connections are extremely simple and many of them are direct connec-
tions to a single user point or contact. The following figures show examples of
how to connect external devices:
• Stand By / Phototest connection
The Stand-by function is active as standard. It is excluded automatically only
when the Phototest function is activated. Note - The Stand-by and Phototest
functions are alternatives as one excludes the other.
The Stand-by function allows consumptions to be reduced. Three types of con-
nections can be obtained:
- with "stand by" active (energy saving); see electrical diagram in fig. 5a
- standard connection: without "Stand by" and without "Phototest"; see electrical
diagram in fig. 5b
- without "Stand by" and with "Phototest"; see electrical diagram in fig. 5c
When the "Stand-by" function is active, 1 minute after the end of a manoeuvre
the control unit goes into Stand-by, turning off the Inputs and Outputs to
reduce consumptions. The status is indicated by the "OK" LED which begins to
flash more slowly. WARNING – If the control unit is powered from a photovolta-
ic panel ("Solemyo" system) or a buffer battery, the "Stand-by" function must be
activated as shown in the electrical diagram in fig. 5a.
When the "Stand-by" function is not required, the "Phototest" function may be
activated. This verifies at the beginning of a manoeuvre that the connected pho-
tocells operate correctly. To use this function, first connect the photocells appro-
priately (see electrical diagram in fig. 5c) and then activate the function.
Note – When the phototest is activated, the inputs subjected to the test proce-
dure are PHOTO, PHOTO1 and PHOTO2. If one of these inputs is not used it
must be connected to terminal no. 8.
• Key switch connection
Example 1 (fig. 7a): How to connect the switch in order to perform the STEP-
BY-STEP and STOP functions
Example 2 (fig.7b): How to connect the switch in order to perform the STEP-
BY-STEP and one of the auxiliary input functions (PARTIAL OPENING, OPEN
ONLY, CLOSE ONLY ...)
Note – For electrical connections with the "Stand By" function active, see
"Stand By/Phototest function" in this paragraph 2.4.1.
• Connection for Gate Open Indicator / Electric lock (fig. 8)
If the gate open indicator has been programmed, the output can be used as an
open gate indicator light. The light, flashes slowly during opening and quickly
during closing; If it is on but does not flash, this indicates that the gate is open.
If the light is off, the gate is closed. Se the output has been programmed as an
electric lock, it is activated for 3 seconds each time opening begins.
2.4.2 - STOP type input
The MC424 control unit can be programmed for two types of STOP input:
- NC type STOP for connecting up to NC type contacts.
- Constant resistance STOP. It enables the user to connect up to the control
unit of devices with 8.2kΩ constant resistance (e.g. sensitive edges). The
input measures the value of the resistance and disables the manoeuvre when
the resistance is outside the nominal value. Devices with normally open "NO"
or normally closed "NC" contacts, or multiple devices, even of different types,
can be connected to the constant resistance STOP input, provided that
appropriate adjustments are made; see Table 1.
WARNING! – If the constant resistance STOP input is used to connect
devices with safety functions, only the devices with 8.2 KΩ constant will
resistance output guarantee the fail-safe category 3.
NO
In parallel (note 1)
NC (note 2)
8,2KΩ In parallel
Notes to Table 1:
Note 1 – Any number of NO devices can be connected to each other in paral-
lel, with an 8.2K Ω termination resistance (fig. 9a). For electrical connections
with the "Stand By" function active, see "Stand By/Phototest function" in this
paragraph 2.4.1.
Note 2 – The NO and NC combination can be obtained by placing the two con-
tacts in parallel, and placing an 8.2K Ω resistance in series with the NC contact.
It is, therefore, possible to combine 3 devices: NO, NC and 8.2K Ω (fig. 9b).
Note 3 – Any number of NC devices can be connected in series to each other
and to an 8.2K Ω resistance (fig. 9c).
Note 4 – Only one device with an 8.2K Ω constant resistance output can be
connected; multiple devices must be connected "in cascade" with a single
8.2K Ω termination resistance (fig. 9d).
NC PHOTO 2 function
— No function
TABLE 1
1st device type:
NC 8,2 KΩ
(note 2) In parallel
In series (note 3) In series
In series (note 4)

2.5 - Initial start-up and electrical connections

IMPORTANT! – Connections must be made exclusively by qualified per-
sonnel.
After powering up the control unit, check that all the LEDs flash rapidly for a few
seconds, then perform the following checks:
1. Check that there is a voltage of approximately 30Vdc on terminals 9-10. If
not, unplug the unit immediately and carefully check the connections and
input voltage.
2. After initially flashing rapidly, the P1 LED will indicate the control unit is work-
ing correctly by flashing regularly at 1 second intervals. When there is a vari-
ation in the inputs, the "P1" led will rapidly flash twice to show that the input
has been recognised.
3. If the connections are correct, the LED for the "NC"-type inputs will be on,
while those for the "NO" type inputs must be off. See fig. A and Table 2.
A
INPUT INPUT TYPE
STOP STOP NC
CONSTANT RESISTANCE
STOP 8.2 KΩ
PHOTO NC
FOTO1 NC
STEP-BY-STEP NO
AUX OPEN PARTIALLY type 1 - NO
OPEN PARTIALLY type 2 - NO
OPEN ONLY - NO
CLOSE ONLY - NO
FOTO2 - NC
4. Check that the relative LEDs switch on and off when the devices connected
to the inputs are operated.
5. Check that by pressing P2 both motors perform a short opening manoeuvre,
and the motor of the upper leaf starts first. Block the manoeuvre by press-
ing P2 again. If the motors do not start up for opening, invert the polarities of
the motor cables. If, however, the first one to move is not the upper leaf,
operate jumper E (fig. 2).
2.6 - Automatic search system for the limit switches
On the successful completion of the various controls, start the automatic
search system phase for the limit switches. This work is necessary as the
MC424 control unit must "measure" how long the opening and closing
manoeuvres take This procedure is completely automatic and detects the
mechanical opening and closing stops by measuring the load on the motors.
Warning! – If this procedure has already been carried out, in order to
reactivate it, the user must first delete the memory (see the "Memory de -
letion" chapter). In order to check whether the memory contains any li mit
switch parameters, turn the power supply to the control unit on and then
off again. If all the LEDs flash rapidly for approximately 6 seconds, the
me mory is empty. If, however, they only flash for 3 seconds, the memory
already contains some limit switch parameters.
Before starting limit switch searching, make sure that all the safety devices are
enabled (STOP, PHOTO and PHOTO1). The procedure will be immediately
interrupted if a safety device triggers or a command arrives. Ideally the doors
should be half open, although they can be in any position.
Procedure – Press the P2 button (fig. 2) to start begin searching which
includes:
- Both motors open briefly.
- Motor closes the lower leaf until it reaches the mechanical closing stop.
- The upper leaf motor closes until it reaches the mechanical closing stop.
- The motor of the upper leaf begins to open.
- After the programmed delay, opening of the lower leaf begins. If the delay is
in sufficient, block the search by pressing P1 (fig. 2), then modify the time (see
chapter 5).
- The control unit measures the movement required for the motors to reach the
opening mechanical stops.
- Complete closing manoeuvre. The motors can start at different times, the aim
is to prevent the leafs from shearing by maintaining a suitable delay.
- End of the procedure with memorisation of all measurements.
TABLE 2
STATUS LED
L1 On
L1 On
L2 On
L3 On
L4 Off
L5 Off
L5 Off
L5 Off
L5 Off
L5 On
English – 3