SICK WTT12-S Instrucciones De Funcionamiento página 25

7.2 Electrical installation
8029123/2024/01/15 | SICK
Subject to change without notice
Only operate the device with an LPS (limited power source) in accordance with IEC
■
62368-1 or an NEC Class 2 power supply unit.
All circuits connected to the device must be designed as SELV/PELV circuits.
■
Operation in short-circuit protected network at max. 8 A.
■
NOTE
Layout of data cables
Use screened data cables with twisted-pair wires.
■
Implement the screening design correctly and completely.
■
To avoid interference, e.g., from switching power supplies, motors, clocked drives,
■
and contactors, always use cables and layouts that are suitable for EMC.
Do not lay cables over long distances in parallel with voltage supply cables and
■
motor cables in cable channels.
The IP enclosure rating for the device is only achieved under the following conditions:
The cables plugged into the connections are screwed tight.
■
If these instructions are not complied with, the IP enclosure rating for the device is not
guaranteed!
Important information
NOTICE
The supply voltage must be monitored for overvoltage (e.g., by the controller). In the
event of an overvoltage (> 30 V DC), the system must go into the safe state.
NOTE
To avoid incorrect wiring, test the installation before putting the sensor into operation.
Prerequisites
The sensor must be connected in a voltage-free state (U
Pin assignment
U : 10 V ... 30 V DC
B
Table 6: Connection diagram
1 = BN
2 = WH
3 = BU
4 = BK
5 = GY
OPERATING INSTRUCTIONS
= 0 V).
V
+ (L+)
n. c.
- (M)
Q
D (Diagnostics Test)
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