+24V*
CDM420-0006
PNP sensor 4
V
S
GND
Out
GND
S6
ON
OFF
S6 : SGND-GND
V
S ext
Shield
A
Sensor B
37
SGND
6
Shield
39
+24 V*
Trigger sensor 1
3
2
+24V*
CDM420-0006
GND
S6
ON
OFF
S6 : SGND-GND
Shield
A
Sensor B
37
SGND
6
Shield
39
+24 V*
1
V
S ext
GND
A
37
2
2
Figure 68: Left: Trigger sensor connected potential-free and supplied with power externally. Right: alternative switch,
!
supplied with power by connection module CDM420-0006 or
"
connected volt-free and supplied with power externally. Now
select switch setting S6 as shown in the left figure.
1
Trigger sensor, e.g. for read cycle generation
2
External supply voltage V
S ext
3
Supply voltage V
S
4
PNP sensor
Table 46: Assignment of placeholders to the digital inputs
CDM420-0006 Device
Terminal A Signal B Pin C Sensor D
38 Sensor 1 14 1
28 Sensor 2 4 2
Function of switch S6
Table 47: Switch S6: SGND - GND
Switch setting Function
ON GND of the trigger sensor is connected with GND of CDM420-0006 and
GND of the device
OFF Trigger sensor is connected volt-free at CDM420-0006 and the device.
Common, isolated reference potential of all digital inputs is SGND.
Characteristic data of the digital inputs
Table 48: Characteristic data of the digital inputs “Sensor 1” and “Sensor 2”
Type Switching
Switching behavior Power to the input starts the assigned function, e.g. start read cycle.
Default setting in the device: logic not inverted (active high), debounce
time 10 ms
Properties
•
Opto-decoupled, reverse polarity protected
•
Can be wired with PNP output of a trigger sensor
Electrical values Low: V
in
1)
≤ 2 V; I
in
2)
≤ 0.3 mA
1)
Input Voltage
2)
Input current
14 ANNEX
106
O P E R A T I N G I N S T R U C T I O N S | CLV61x 8017840/19OF/2021-10-28 | SICK
Subject to change without notice