BECKHOFF KL3311 - Manual (Page 9)

Functional description
KL3311, KL3312, KL3314 and KL3302 7
T
Tvgl
ADC
LM334
1:1 1:1 1:1
amount
rep.
Taus
A_w,B_w
user-
scaling
A_h,B_h
Siemens-
format
a0, b0, c0
temperature
A_a, B_a
Gain, Offset adjust.
Output: microV Output: T in 1/16°C
Output: microV
a1,b1,c1
A00,B00
Output: Tvgl in °C
X_vgl Tvgl
Uvgl
X_m
Um1
Uk
T Th Ta
manuf. scal.
Connection
Due to the differential inputs of the terminals, different connection types are
recommended depending on the type of thermocouple used.
For earthed thermocouples, ground is connected to the screen. If the
thermocouple has no earth connection, the ground, screen and -TC1 or -
TC2 contacts are connected with each other.
M M M M
Shield Shield
Earthed
thermocouple Floating thermocouple
The examples show the situation for KL3312. For the KL3314, the screen
should be connected to an additional screen terminal (KL9195).