semaphore TBOX LT2-530 Series, User Manual, Page: 193 / 197

Version : 1.09 193
Appendix H. Precautions In Cabling
H.1. Cabling to Spring-Cage Terminal Blocks
TB
OX
LT2
is equipped with compact spring-cage terminal blocks.
This connector allows a high density of connections.
Press the orange plastic with a screwdriver for inserting
and removing the cable.
It is recommended to use either solid cable or stranded cable with ferrule.
Connection capacity
Without ferrule Solid cable: 0.2 .. 1.5 mm² (24..16 AWG)
With ferrule without plastic sleeve Solid or Stranded cable: 0.2 .. 1.5 mm²
With ferrule with plastic sleeve Solid or Stranded cable: 0.2 .. 0.75 mm²
Ferrule specification for 0.75mm² cable
B: minimum 10 mm
C: 1.5 mm D: 3.5 mm
H.2. Cabling Analog Inputs
One must be particularly careful when cabling temperature probes (Pt1000) and more precisely when
combining temperature probes and 4..20mA sensors.

It is mandatory to cable temperature probes to one of the GND from the AI stage, and to reserve it
uniquely to the probes.

If you mix temperature probes and 4..20mA sensors, use a separate GND for each type of signal.
Example with LT2-542-x
Gnd Gnd
1 0
Pt1000
5
3
1
0
2
4
4..20mA
4..20mA
4..20mA
+
-