Manual Load Switch LS 804
Page 6 of 34
Subject to technical changes. 06/2017
A.S.T. - Angewandte System Technik GmbH, Mess- und Regeltechnik
4.4.
Switching inputs IN1 to IN16
Sixteen optocoupler inputs are arranged in four groups each group being made up of four inputs. Limit
sets can be accessed to by means of inputs IN1 to IN8.
A static signal on the relevant input provides access to the corresponding limit set: Via IN1, set “1” is
defined as the current set. If no signal is present, the LS 804 will operate with the limit set last displayed
in Chapter 6.4 Limits (K1 to K6). If, by accident, more than one input is occupied by a signal, the LS 804
will utilise that input having the lowest number.
For the load spectrum recorder, inputs IN13 and IN16 are employed for switching the “Raise/Lower”
signals (signals a to d). A signal applied to input IN12 generates the RESET function on the device in the
event of an error occurring; also refer to Chapter 7 Maintenance / Error messages.
Static signal
on
Reaction on LS 804
IN1
Accessing to limit set 1
IN2
Accessing to limit set 2
IN3
Accessing to limit set 3
IN4
Accessing to limit set 4
IN5
Accessing to limit set 5
IN6
Accessing to limit set 6
IN7
Accessing to limit set 7
IN8
Accessing to limit set 8
IN9
((unoccupied))
IN10
((unoccupied))
IN11
((unoccupied))
IN12
RESET function in the event of error (FATAL ERROR); also refer to Chapter on LED
“Error”.
IN13
Start up / Load spectrum recorders / Sensor a (signal for Raise/Lower)
IN14
Start up / Load spectrum recorders / Sensor b (signal for Raise/Lower)
IN15
Start up / Load spectrum recorders / Sensor c (signal for Raise/Lower)
IN16
Start up / Load spectrum recorders / Sensor d (signal for Raise/Lower)
Table 1 – Inputs
Return of the keying pulse "direct" or "+24 V DC" or "0 V" is set by means of jumpers INx...xR.
Conductors of up to 1.0 mm
2
can be connected up to terminal blocks 51 to 70.
IN3
68
IN
2
69
0V
IN
1
70
+24
V
D
C
IN
4
6
7
IN
1.
..4
R
66
0V
68
69
70
67
66
IN3
IN
2
0V
IN
1
+24VD
C
IN
4
IN
1.
..4R
24V
68
69
70
67
66
IN
3
IN
2
0
V
IN
1
+
24VD
C
IN
4
IN
1.
..4R
24V
0V
Switching signal "0V"
Switching signal "24V"
Switching signal "Zero potential"
Figure 6 Examples illustrating return of keying pulse via jumpers (0V, 24V, zero potential)
Note: The jumper settings in Fig. 6 apply to all groups IN1…IN4 / IN5…IN8 / IN9…IN12 /
IN13…IN16.
