Newall DP8 - 8 Auxiliary Output Option; Position Pulse Output

Auxiliary Output Option
Newall Measurement Systems
38
AUXILIARY OUTPUT OPTION
8.0 AUXILIARY OUTPUT OPTION
Figure 8.1 shows the pin functions of the auxiliary connector.
8.1 Position Pulse Output
8.11 Purpose
The Position Pulse Output function on the DP8 provides a means by which external devices such as relays
or programmable logic controllers (PLC’s) can be used to control a machine from the DP8.
Only ow voltage connections may be made to the auxiliary input/output of the DP8.
8.12 Outputs
There are three optically isolated outputs for this function. These are transistor outputs with both the
collectors and emitters uncommitted, i.e. equivalent to voltage free contacts. The transistors are normally
in the ON state (normally closed contacts) and change to the OFF state when active. The rating of the
transistors is:-
Vc MAX = 30V
Ic MAX = 40mA
Figure 8.2 shows an axample of use with relays
PIN FUNCTIONS
1 Output No 3 Collector (Z)
2 Output No 2 Collector (Y)
2 Output No 1 Collector (X)
4 Not used (do not connect)
5 Remote Enter/Reset
6 Remote zero input Z
7 Remote zero input Y
8 Remote zero input X
9 Output No 3 Emitter (Z)
10 Output No 2 Emitter (Y)
11 Output No 1 Emitter (X)
12 Not used (do not connect)
13 Not used (do not connect)
14 Not used (do not connect)
15 Ground
12345678
9 1011121314
15
OUTPUT CIRCUIT
INPUT CIRCUIT
TIL197
BZV85C33
1, 2 OR 3
9, 10 OR 11
5, 6, 7, OR 8
5V
10K
OV & GROUND
15
10K
Figure 8.1 Auxiliary Connector
View of auxiliary connector
12345678
9 1011121314
15
RL3
RL2
RL1
24V d.c
Relay Coil Resistance
600 ohm minimum
-
+
DP8
Figure 8.2 Connection to Output Relays (example)