20
20
6.3 Internal Circuit of the Inputs
The inputs
XSTART
,
XFEH
and
XETE
are designed for an operating voltage
of 24 V.
For each signal
X
(input)
exists a separate reverse line
RX
(input)
at the
connector.
For that the following signal pairs result:
Pin 1 - XSTART
Pin 9 - RXSTART
Pin 2 - XFEH
Pin10 - RXFEH
Pin 3 - XETE
PS5 only
Pin11 - RXETE
PS5 only
Figure 17 Internal circuit of the inputs
Input
STA
(Pin 13) must be connected to
GND
(Pin 12) to enable the signal
XSTART
.
6.4 Internal Circuit of the Outputs
For the outputs solid-state relays are used. The outputs have the common
reference potential RUEL (Pin 14).
Switching the outputs is realized by opening or closing a contact between
RUEL and the respective output.
U
max
= 42 V
I
max
= 100 mA
Pin 4 - XESP
Pin 5 - XEDG
Pin 6 - XDNB
Pin 7 - XEDST
Pin 14 - RUEL
Figure 18 Internal circuit of the outputs