Longer connecting cables at the digital outputs of the device should be avoided due to
the resulting fall in voltage. This is calculated as follows:
Δ
U = (2 x length x current) : (conductance value x cross-section)
Conductance value for copper: 56 m/
Ω
mm
2
.
Assignment of infringed fields – digital outputs
Output level: The level of the digital outputs OUT 1 ... OUT 3 is active low (in resting
position: high, in working position: low (field infringed)).
All fields of a field set are considered infringed upon switching on, booting, in the event
of an error and when the device is switched off.
Example 1:
3 fields, rectangular, nested inside each other
1
2
3
Infringed fields
Digital outputs
OUT 1
OUT 2
OUT 3
Fields 1, 2, and 3 infringed
Active
Active
Active
Fields 2 and 3 infringed
Deactivated Active
Active
Field 3 infringed
Deactivated Deactivated Active
No field infringed:
Deactivated Deactivated Deactivated
Example 2
: 3 fields, rectangular, overlapping
The overlapping fields create areas that can be used as additional fields.
1
2
3
A
A
B
C
D
E
F
B
Infringed areas (fields)
Digital outputs
OUT 1
OUT 2
OUT 3
A (field 1 infringed)
Active
Deactivated Deactivated
B (field 2 infringed)
Deactivated Active
Deactivated
C (fields 1 and 2 infringed)
Active
Active
Deactivated
D (fields 1, 2, and 3 infringed)
Active
Active
Active
E (fields 1 and 3 infringed)
Active
Deactivated Active
F (field 3 infringed)
Deactivated Deactivated Active
- (no field infringed)
Deactivated Deactivated Deactivated
6
ELECTRICAL INSTALLATION
36
O P E R A T I N G I N S T R U C T I O N S | TiM781
8024231/1G72/2022-05-27 | SICK
Subject to change without notice
