Mhouse GDX01, Инструкция по установке и эксплуатации, Страница: 16 / 214

• To connect safety devices other than photocells
As well as photocells, the system can also be equipped with other safety
devices with different types of contact. These are:
– devices with “ normally open ” contact (“ NO ”);
– devices with “ normally closed ” contact (“NC”);
– devices with constant resistance 8,2 K
Ω
.
These devices can be connected to terminals 1 and 2 on the control unit;
also more than one device can be connected to the same terminals as
described below:
A ) – to connect a series of “ NO ” type devices, use a “parallel” connection
layout as shown the example in fig. 40-e .
B ) – to connect a series of “ NC ” devices, use a connection layout “in
series” as shown in the example in fig. 40-f .
C ) – to connect a series of devices with constant resistance 8,2 K Ω , use
a “parallel” connection layout, positioning the resistance (8,2K Ω ) on the
last device, as shown in the example in fig. 40-g .
D ) – to connect a series of devices with different contact types (“ NO ”,
“ NC ” and constant resistance 8,2 K Ω ), use a connection layout in series
and in parallel as shown in the example in fig. 40-h .
Note – Only the safety devices with an output with constant resist-
ance 8,2 K
Ω guarantee safety category 3 against faults according to
the standard EN 954-1.
Activation of these safety devices stops the manoeuvre in progress and a
brief inversion of movement.
• Powering devices other than those specified in this chapter
As well as those mentioned, the system can also be equipped with other
safety devices such as a universal relay receiver. These devices must be
connected to terminals
2 and 3 on the control unit.
CAUTION! – There is a 24 Vdc power voltage on terminals 2 and 3
with delivery of a current of 100 mA. The total absorbed current of
the various devices connected to these terminals must not exceed
this value.
WARNING – On completion of connections, secure all cables using spe-
cial clamps and refit the cover on the control unit.
1 2 3 4 5
40-d
1 2 3 4 5
40-e
1 2 3 4 5
40-f
1 2 3 4 5
40-g
1 2 3 4 5
“ NA ” “ NC ”
40-h
English
16 – English