marposs P3UP - Connection Instructions for Machine I;O; Output Voltages up to 150 V a.c.; Output Voltages 150-250 V a.c.

Installation and User Manual
43
CONNECTION INSTRUNCTIONS
Output voltages not exceeding 150 V a.c.
BEWARE
Between inputs and outputs there is a double insulation because there
can be a voltage of up to
150 V a.c. on the outputs. The double insulation must be maintained in the machine wiring and
in the section of the switches (relays, SSR, etc.) that drive the inputs.
Bear in mind that the inputs, in the case of outputs powered
with a maximum of 150 V a.c., are
SELV in compliance with EN60950-1.
Connection instructions
•
The machine I/O are designed to be operated by a single phase power supply system: Connect all the relays
using the same power supply phase. The energy distri
bution system neutral line must be connected to earth:
When using an IT type energy distribution system, always connect via a suitable isolating transformer.
• When wiring the Heavy Duty HAN 16 A female 16 pin machine I/O connectors (supplied), proceed as follows:
1.
use shielded cables isolated against voltages greater than 150 V a.c. for all signals, including inputs. The
cables must be protected by global type braided shielding (covering > 85%). Use wire with a cross section
between 0.75 mm
2
and 2.5 mm
2
Maximum length of cable, including switch and breaker connections: 30m;
2. strip wires by 7 – 7.5mm at either end;
3.
terminate each wire using a suitably rated lug; the lugs must also guarantee the surface distances (see
below);
4. apply a tightening torque of 0.5 Nm to the screws (see Heavy Duty specification). All screws must be fully
tightened, including the unused terminals
: check that the surface distance between adjacent screws, and
adjacent lugs, is greater than 3.2 mm;
5. connect the shield (P3UP side) to the case of the Heavy Duty connector and to the chassis on the machine
side using suitable terminal blocks or metallic cable clamps. Make sure that the contact surface between the
shields and the machine chassis is ample, free from surface insulation (e.g. paint) and the connections are
kept as short as possible. It is important to guarantee the continuity of the shield even when there are
switches and circuit breakers installed along the line, making sure that the parts that require shielding in the
vicinity of
the switches are kept to an absolute minimum. Make sure that the shield is connected securely to
the Heavy Duty
connector case using the dedicated screw (ensure ample contact surface). Do not solder or
weld the shield to the cable clamps or directly to the connector cases.
6. the machine I/O connector must not be inserted/extracted in the presence of voltage/current.
[
N.B.
Set-
up the Control trip thresholds so that multiple commands cannot be tripped simultaneously during
normal working cycles.
Output voltages between 150 V a.c. and 250 V a.c.
The output contacts can be used at voltages between 150 V a.c. and 250 V a.c. (max.): the greater voltage
compared to the previous section requires different precautions.
ATTENTION
Although the voltage p
resent on the input pins is relatively low, it should be considered as hazardous as
the voltage present on the outputs. The input wiring and drive circuits must comply with the applicable
regulations, taking all the necessary precautions associated with ci
rcuits supplied by voltages of up to
250 V a.c. r.m.s...
ATTENTION
The outputs are not protected: install a “B” curve (see Standard EN60947) circuit breaker type
protection device with a current rating not exceeding 4 A, or equivalent fuse on each outp
ut. The power
supply should also be fitted with a differential circuit breaker.
Connection instructions
•
The machine I/O are designed to be operated by a single phase power supply system: Connect all the relays using
the same power supply phase. The energy distribution system neutral line must be connected to earth: When using
an IT type energy distribution system,
always connect via a suitable isolating transformer.
• When selecting the circuit breakers (or relays or SSR, etc.) that drive the inputs, it is important to bear in mind that
there are hazardous voltages present on the input circuits (max 250 V a.c. r.m.s.) Even the potential difference
between the individual contacts on the circuit breaker device may reach a maximum of 250 V a.c. r.m.s.
• When wiring the Heavy Duty 16 A female 16 pin machine I/O connectors (supplied), proceed as follows:
1.
use shielded cables isolated against voltages of at least 300 V a.c. for all signals, including inputs. The cables
must be protected by global type braided shielding (covering > 85%). Use wire with a cross section between
0.75 mm
2
and 2.5 mm
2
Maximum length of cable, including switch and breaker connections: 30m;