Bühler technologies TF Notice De Montage page 6

TF, TS, Thermolog
5 Operation and control
DANGER
Electric voltage
Risk of electric shock
a) Disconnect the unit from the mains when performing
any maintenance.
b) Secure the equipment from accidental restarting.
c) The unit may only be maintained and opened by instruc-
ted, competent personnel.
The pin assignment for the respective models are listed in
chapter Pin Assignment.
5.1 TF-M-Pt100/TF-E-Pt100/TF-M-Pt100-VAL
Temperature Sensor
Type TF temperature sensors use a Pt100 temperature sensor
per DIN/IEC 751 class B to generate a temperature-dependent
resistance signal. The Pt100 sensor is installed at the lowest
point of the sensor tube to always ensure sufficient contact
with the medium being measured.
The temperature sensor TF-M-Pt100-VAL was designed for
measuring storage temperatures and has a spring-loaded
sensor tube to allow installation free of play with a constant
contact pressure at the measuring point.
5.2 TSM/TSK/TSA Bi-Metal Temperature Switch
The TS temperature sensors have a bi-metal temperature
switch to signal a set temperature value. Unlike the TSM
standard version, the TSK and TSA versions with bi-metal
switches have a lower hysteresis.
The TSA version is further specifically designed for installation
in tube systems and cooling matrices.
The bi-metal switch is installed at the lowest point of the
sensor tube to always ensure sufficient contact with the me-
dium being measured.
5.3 Thermolog MK2/EK2 Temperature Sensor with
4-20mA Output
Type MK2 and EK2 temperature sensors use a Pt100 temperat-
ure sensor per DIN EN/IEC 60751 Class B to generate a temper-
ature-dependent resistance signal.
The built-in electronics convert this resistance signal into a
standard 4-20 mA two-lead signal.
The Pt100 sensor is installed at the lowest point of the sensor
tube to always ensure sufficient contact with the medium be-
ing measured.
6 Maintenance
Always observe the applicable safety- and operating regula-
tions when performing any type of maintenance. Please refer
to the original operator's manual on the included CD or online
at www.buehler-technologies.com for maintenance informa-
tion.
6 Bühler Technologies GmbH
7 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.
7.1 Troubleshooting
Problem / Malfunc- Possible cause
tion
No display • No supply
voltage
Error messages on the display:
Alternating between Err and Exxx: e.g.
Error 001 • Ambient tem-
perature too
low
• Ambient tem-
Error 002 perature too
high
Error 004 • Pt100 defect-
ive (short-cir-
cuit)
• Pt100 defect-
Error 008 ive (cable
break)
Error 1024 • Internal error
Possible errors
Problem / Possible cause
Malfunction
Switching out- • Switching out-
put not trigger- put configured
ing when ex- incorrectly
ceeding limits
• Switching out-
put defect
Switching out- • Switching out-
put constantly put configured
switching incorrectly
• Switching out-
put defect
The analogue • Wrong signal
doesn't receive type set
the full/correct
output current
Action
• Check cable and
replace, if ne-
cessary
⇔
• Maintain limits
• Maintain limits
• Replace Pt100
cable
• Send device in
for repair
• Replace Pt100
cable
• Send device in
for repair
• Please contact
customer ser-
vice
Action
• In submenu Coux:
"Test Switching
Output" to ensure
normal mode
• In submenu Coux:
"Test Switching
Output" to test
the desired
switching output
• In submenu Coux:
"Test Switching
Output" to ensure
normal mode
• In submenu Coux:
"Test Switching
Output" to test
the desired
switching output
• In submenu
Aoux: Check and
if necessary set
BX140006 ◦ 11/2019