Supply For 24 V Digital Outputs (Channel H); Fig. 8-2: Terminal St2 - Addi-Data APCI-1710 Technical Description

APCI-1710
8.1.2 24 V supply for 24 V digital outputs (channel H)
WARNING!
Pin 34 of the front connector has a double assignment function.
If you do not connect Pin 34 correctly, your board can be
destroyed.
According to which input type is connected, the user shall observe the
connection of the 24 V output channel H.
♦ Use of 5 V differential inputs
Channels A±, B±, C±, D± delivery status
♦ Use of TTL inputs
The 24 V supply of the outputs H1 to H4 is conducted through terminal
ST2. Jumper ST3 must be set on position B. Pin 34 is considered for the
auxiliary voltage +UREF for the adaptation of the 5 V differential inputs on
TTL signals.
Pin Description
ST2-1 24 V supply
ST2-2 EXTGND
The 24 supply of the outputs H1 to H4 is conducted through
Pin 34 of the front connector ST1. Jumper ST3 is on position
A.

Fig. 8-2: Terminal ST2

Table 8-6: External supply through terminal ST2
Input/Output
24 V supply
EXTGND
Connecting the peripheral
Function
Reference potential
Note
Connected with Pin 1 of
the SUB-D connector
39