SICK GTB20 Manuel D'utilisation page 32

OPERATING INSTRUCTIONS
5.2 Notes on UL approval
en
5.3 Connection notes
32 O P E R A T I N G I N S T R U C T I O N S | GTB20
UL approval
Table 2: UL approval
G20 products with DC voltage supply and with:
• connector
• cable
• cable with connector
UL:
The device shall be supplied from an isolating
transformer having a secondary overcurrent
protective device that complies with UL 248 to
be installed in the field rated either:
a) max 5 amps for voltages 0 V ~ 20 V (0 V ~
28.3 V peak), or
b) 100 / Vp for voltages of 20 V ~ 30 V (28.3
V ~ 42.4 V peak)
Alternatively, they can be supplied from a
Class 2 voltage supply.
UL Environmental Rating: Enclosure type 1
For use in NFPA 79 Applications only
G20 products with AC voltage supply and with:
•
cable
• cable with connector
UL:
UL Environmental Rating: Enclosure type 1
For use in NFPA 79 Applications only
G20 products with DC and AC/DC voltage sup‐
ply and with:
• terminal chamber: Gxx20x-QK and Gxx20x-
QL
UL:
For use in NFPA 79 Applications only
The sensors must be connected in a voltage-free state. The following information shall
be observed, depending on the connection type:
– Male connector connection: Pin assignment
– Cable: Wire color
– Terminal connection: Pin assignment and the following points
Terminal connection:
1. Untighten the M3 screw on the back cover and remove the back cover.
2. Lead voltage-free supply cable through the 3/8" MPT (Male Pipe Thread) fitting,
spacer, rubber seal (as illustrated below) and the back cover opening in the right
position horizontally or vertically.
3. Tighten the 3/8" MPT (Male Pipe Thread) according to
4. Connect and secure each of the wires to the terminal block with a torque of 0.4 to
0.5 Nm (see table 5, page 34
5. Put the back cover back. Ensure the back cover is free of obstruction and securely
tightened.
table 3
and table 9).
and table 4.
8026846.1LP5/2024-05-06 | SICK
Subject to change without notice