GHM Martens TB225 User manual

Translation of the original German version. In questions of
technical incorrectness or wrong translations, please refer to
the german version.
Save for later reference.
English
Company / brands of GHM
www.ghm-group.de
Operating manual
Temperature limiter/
Temperature monitor
TB225
Approved in accordance with:
DIN EN 14597 (replacing DIN 3440)
SIL 2 (optional)
Option:

GHM Group –Martens
GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany
Phone [phone] | [email protected] | www.ghm-group.de
2
1Intended use (areas of application)............................................................................................................................................. 3
1.1 Safety signs and symbols .................................................................................................................................................. 3
1.2 Safety instructions.............................................................................................................................................................. 4
1.3 Product liability and warranty............................................................................................................................................. 4
1.4 Standards and directives ................................................................................................................................................... 4
1.5 Approvals........................................................................................................................................................................... 4
2Product description..................................................................................................................................................................... 5
2.1 Scope of delivery ............................................................................................................................................................... 5
2.2 Functional principle............................................................................................................................................................ 5
2.3 Layout of the measuring system........................................................................................................................................ 6
3Assembly and installation........................................................................................................................................................... 7
3.1 Mechanical assembly......................................................................................................................................................... 7
3.2 Electrical installation .......................................................................................................................................................... 8
3.3 Connection diagram........................................................................................................................................................... 9
4Controls and functional description........................................................................................................................................... 10
4.1 Basic operation of the TB225........................................................................................................................................... 10
4.2 Menu structure and parameter overview.......................................................................................................................... 12
4.3 Display menu................................................................................................................................................................... 13
4.4 Input menu....................................................................................................................................................................... 16
4.5 Output menu.................................................................................................................................................................... 18
4.6 Function menu................................................................................................................................................................. 22
4.7 Error messages................................................................................................................................................................ 25
5Functional Safety...................................................................................................................................................................... 26
6Function Test............................................................................................................................................................................ 27
7Commissioning, maintenance and service ............................................................................................................................... 28
7.1 Commissioning ................................................................................................................................................................ 28
7.2 Maintenance .................................................................................................................................................................... 28
7.3 Service............................................................................................................................................................................. 28
8Technical data .......................................................................................................................................................................... 29
8.1 Mechanical design / dimensions...................................................................................................................................... 30
9Order code................................................................................................................................................................................ 31
9.1 Accessories...................................................................................................................................................................... 31
9.2 Troubleshooting............................................................................................................................................................... 31
10 Device transport and storage.................................................................................................................................................... 31
11 Returns..................................................................................................................................................................................... 32
12 Disposal.................................................................................................................................................................................... 32
13 Imprint....................................................................................................................................................................................... 32
14 EC Certificate of Conformity ..................................................................................................................................................... 33

3
1 Intended use (areas of application)
Refer to the chapter 'Product description' for detailed specifications for
the area of application.
The operational safety of the device is only assured when used as in-
tended in accordance with the specifications in the operating manual.
Intervention beyond the actions described in the operating manual may only be
carried out by personnel authorized by the manufacturer for safety and warranty
reasons. Conversions or modifications made on one's own authority are ex-
pressly prohibited.
Application-specific dangers can emanate from this device when used improperly
or not as intended.
In the event of improper use, this device may pose application-specific
hazards.
The device is not suitable for use in potentially explosive atmospheres.
The device is only suitable for use in safety-relevant systems accord-
ing to SIL with the option -SIL chosen by ordering code.
General safety instructions, use
This operating manual must be kept in a location such that qualified personnel
can refer to it at all times.
Any processes described in this operating manual may only be carried out by
trained, qualified personnel who are authorized by the owner and wearing protec-
tive clothing. All rights reserved.
1.1 Safety signs and symbols
Warning notices are identified in this document as described under Table 1:
Warning
Warning! This symbol warns of imminent danger which can result
in death, severe bodily injury, or severe property damage in case
of non-observance.
Attention! This symbol warns of potential dangers or harmful situ-
ations which can cause damage to the device or to the environ-
ment in case of non-observance.
Note! This symbol indicates processes which can have a direct
influence on operation or can trigger an unforeseen reaction in
case of non-observance.
Warning! of an area in which explosive atmospheres can form.
This only applies to devices with ATEX approval.

GHM Group –Martens
GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany
Phone [phone] | [email protected] | www.ghm-group.de
4
1.2 Safety instructions
Read the product description before commissioning the device. Ensure that there
are no limitations for use of the product for the relevant applications.
The owner is responsible for ensuring the fault-free operation of the
device. The owner is obligated to ensure compliance and to observe
the required work and safety measures of the current applicable regu-
lations for the entire duration of use.
1.3 Product liability and warranty
Exclusion of liability:
The contents of the operating manual have been checked to ensure conformity
with the described device. However, deviations cannot be entirely ruled out.
Therefore, we cannot assume any guarantee for complete conformity. The speci-
fications in this document are checked regularly and any necessary corrections
are incorporated into subsequent versions. This document is subject to technical
changes. In addition, all claims are based on the valid 'Standard Terms for the
Supply of Products and Services of the Electrical Industry'.
GHM Messtechnik GmbH cannot inspect or repair any devices without
the required form having been filled in completely (refer to page 32
'Returns').
1.4 Standards and directives
Conformity with Directive 2014/30/EU
CE Conformity EN 60730-1: 2011
EN 60730-2-9: 2010
Installation Category 3 for equipment of Overvoltage Category III according to
IEC 61000-4-5.
1.5 Approvals
EN 14597: 2012 Temperature control devices and temperature limiters for
heat generating systems
EN 61508:2010 Functional safety of electrical/electronic/programmable
electronic safety-related system
GEFAHR

5
2 Product description
The present processor-controlled, independently installed electronic regulating
and control device for control panel assembly is designed for the monitoring of
thermal processes and the safe control thereof in the event of an error. The de-
vice has universal inputs to which double thermocouples, PT100 sensors and
unit signals (0/4 … 20mA and/or 0/2 … 10V) can be connected. The safety func-
tion is provided by means of the main relay with configurable threshold. An addi-
tional relay with an independently adjustable threshold is provided for additional
signaling. In addition, it offers an analogue output which can be freely defined
within the measuring range of the temperature input. The resetting of the device
in the operating mode as a temperature limiter (TB) can take place via the but-
tons on the front, the integrated graphic display, or using an external switch or
external voltage.
2.1 Scope of delivery
TB225
this operating manual
further documents, if applicable
2.2 Functional principle
The connected temperature signal is evaluated and monitored. If the permissible
threshold is reached or an error occurs within the permissible temperature range
(sensor break, sensor short-circuit,, failure of a component in the device, error in
the software, failure of auxiliary voltage), the TB225 switches off immediately.
The additional relay output of the TB225 enables the function of a preliminary
alarm with an independent threshold.
The following operating modes are possible through configuration:
Temperature limiter (TB):
Maximum or minimum monitoring with catch
Manual resetting after fault elimination via the front keys or an external
switch / voltage signal
Operating methods in accordance with EN14597: 09/2012: Type 2B, 2H, 2V
Temperature monitor (TW):
Maximum or minimum monitoring without catch
Automatic resetting on return to the permissible range
Operating methods in accordance with EN14597: 09/2012: Type 2B

GHM Group –Martens
GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany
Phone [phone] | [email protected] | www.ghm-group.de
6
2.3 Layout of the measuring system
Block circuit diagram
Weitbereichsnetzteil
18 V ...
230V
24 V
20 V
Grafikdisplay Tasten
Analog
Digital
Analog
Digital
Microcontroller
Relais 1
Relais Voralarm
Relais Voralarm
Relais 1
Analogausgang
Netzteil
Eingang 1
Eingang 2 Ext. Taster
Eingang 3
Analog
Digital
Analog
Digital
Terminals for
auxiliary voltage and switch outputs
Type plate
Connection for analogue output and ext. button
Connection for temperature sensor
Fig. 1: Temperature limiter TB225
Fig. 2: Block circuit diagram

7
Type plate
The type plate includes the most important identification data
Type and article name
Technical data
Serial number / bar code
3 Assembly and installation
3.1 Mechanical assembly
Carrier rail mounting TS35, DIN EN 60715
The mounting of multiple devices without spaces is only permitted on horizontally
mounted carrier rails.
Fig. 3: Type plate
Fig. 4

GHM Group –Martens
GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany
Phone [phone] | [email protected] | www.ghm-group.de
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3.2 Electrical installation
The device may only be installed by an electrician. The national and
international regulations for connection of electrical systems in the re-
spective user country apply.
The auxiliary voltage is connected at Connections 11 and 13 of the plug-in termi-
nal strip. Terminals 41-44 are for the universal inputs of the TB225.
The 2 switch outputs are available at Connections 21-23 (main relay) and 31-33
(alarm relay). The active analogue output is provided at Terminals 63 and 64; it
switches between current and voltage signal depending on the resistance.
For the external resetting of the TB225 in temperature limiting mode, a potential-
free button can be connected to Terminals 61 and 62 or a voltage signal can be
connected to Terminals 62 and 64.
GEFAHR

9
3.3 Connection diagram
Fig. 5: Connection

GHM Group –Martens
GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany
Phone [phone] | [email protected] | www.ghm-group.de
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4 Controls and functional description
The parameterisation of the temperature limiter / temperature monitor TB225 takes
place via the 3 capacitive buttons on the front side of the device.
You must lift your finger of the button after pressing it each time!!
4.1 Basic operation of the TB225
The Operating level is displayed first after the TB225 is switched on.
The Reset menu (Fig. 7a and 7b) and the peak value buffer (Fig. 8) can be opened
by briefly pressing the middle button. For a reset, the upper arrow key must be
pressed until the bar has reached its full length.
Along with the operating mode, the operating level provides
information about the threshold of the safety functionas
well as the measured temperatureand the status of the
switch outputs
Status of the switch outputs
KV () = alarm relay not activated
K1 () = main relay activated









Fig. 6 Operating level
Fig. 7a
Fig. 7b
Fig. 8
TB max
20°C
KV
K1
°C
19,5
Peak
value
Reset
with ^
minimum
19,5 °C
maximum
19,5 °C
Reset
Ready
Reset
Reset
with ^

11
Press the centre button for 2 seconds in the operating level in order to reach the
main menu. All the parameters that determine the characteristics of the device
are programmed here. Selection takes place with the arrow keys, wherein the
currently selected menu item has a black background. The actuated selection is
opened by pressing the centre button. The 'back' parameter takes you back up
one level.
If no buttons are pressed for 2 minutes, the system automatically returns to the
operating level. By pressing the middle button for 2 seconds, you can also exit the
menu again.
The main menu is divided into the following submenus:
- Back
- Display
- Input
- Output
- Function
Fig. 9: Main menu
Menue
back
Display
Input
Output
Funktion

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4.2 Menu structure and parameter overview
The device operation is menu-based. The individual menus are explained in greater
detail in the following sections.
4.2.1 List of parameters
The following table shows the menu structure of the TB225.
1. Menu level
2. Menu level
Editing level
Parameter
Selection / input
Unit
1 - Display
1.1. - Back
Jump to 1st Menu level
1.2 - Unit
Selection
1.3 - Contrast
Number input
%
1.4 - Language
Selection
1.5 - Lighting
Selection
1.6 - Decimal place
Selection
2 - Input
2.1 - Back
Jump to 1st Menu level
2.2 - Signal
Selection
2.3 - Start analogue input
Number input
°C / °F
2.4 - End analogue input
Number input
°C / °F
3 - Output
3.1 - Back
Jump to 1st Menu level
3.2 - Analogue
Selection
3.3 - Start analogue output
Number input
°C / °F
3.4 - End analogue output
Number input
°C / °F
3.5 - Analogue output error
Selection
3.6 - Alarm - relay
Selection
3.7 - Alarm - value
Number input
°C / °F
3.8 - Alarm - hysteresis
Number input
°C / °F
4 - Function
4.1 - Back
Jump to 1st Menu level
4.2 - Operating mode
Selection
4.3 - Threshold
Number input
°C / °F
4.4 - Hysteresis
Number input
°C / °F
4.5 - External button func-
tion
Selection
4.6 - Temperature correc-
tion
Number input
°C / °F
4.7 - Temperature differ-
ence
Number input
°C / °F
Table 1

13
4.3 Display menu
The Display menu is divided into the following parameters:
- Back
- Unit
- Contrast
- Language
- Lighting
- Decimal place
4.3.1 Display menu –Unit parameter
The temperature unit (°C or °F) is specified with the Unit parameter.
Fig. 10: Display menu
Display
back
Dec.point
Unit
Contrast
Language
Backlight
Fig. 11: Unit parameter
Unit
°C
°F

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4.3.2 Display menu –Contrast parameter
The Contrast parameter specifies the contrast setting of the display with a per-
centage between 0 and 100%.
4.3.3 Display menu –Language parameter
The Language parameter specifies the display language.
Fig. 12: Contrast parameter
Fig. 13: Language parameter
Contrast
50%
Language
deutsch
english

15
4.3.4 Display menu –Lighting parameter
The display lighting is set with the Lighting parameter.
4.3.5 Display menu –Decimal place parameter
The decimal place parameter specifies whether the temperature is displayed with
or without a decimal place.
without
no decimal place
0.0
one decimal place
Auto: The display lighting is automatically deac-
tivated after 2 min. if the device is not oper-
ated.
On: The display lighting is permanently acti-
vated.
Fig. 14: Lighting parameter
Fig. 15: Decimal place parameter
Backlight
auto
on
Dec.place
without
0,0

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4.4 Input menu
The Input menu is divided into the following parameters:
- Back
- Signal
- Analogue input start value
- Analogue input end value
4.4.1 Input menu - Signal parameter
The Signal parameter defines the input signal of the TB225.
PT100
Pt100 in 3-conductor circuit
Type J
Double thermocouple Fe-CuNi
Type K
Double thermocouple NiCr-Ni
Type S
Double thermocouple Pt10Rh-Pt
Type N
Double thermocouple NiCrSi-NiSi
0..10V
Analogue input 0..10V
2..10V
Analogue input 2..10V
0..20mA
Analogue input 0..20mA
4..20mA
Analogue input 4..20mA
Fig. 16: Input menu
Input
back
Signal
Start AIn
Ende AIn
Fig. 17:
Signal parameter
Warning
0…10 V and 0…20 mA must not be selected if device
acts as temperature limiter!
Warning
0…10 V and 0…20 mA must not be selected if device
actes in safety relevant application acc. to SIL!
Signal
Pt100
0 .. 10V
Type J
Type K
Type S
Type N

17
4.4.2 Input menu - Analogue input start value parameter
The Analogue input start value parameter is used to define the temperature,
which is assigned to the lower analogue value (0/2V and/or 0/4mA).
4.4.3 Input menu - Analogue input end value parameter
The Analogue input end value parameter is used to define the temperature, which
is assigned to the upper analogue value (10V and/or 20mA).
Fig. 18: Analogue input start value parameter
Fig. 19: Analogue input end value parameter
An In St
°C
0
An In En
°C
100

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4.5 Output menu
The Output menu is divided into the following parameters:
- Back
- Analogue output
- Start value scaling
- End value scaling
- Error behaviour analogue output
- Function alarm relay
- Alarm value
- Alarm hysteresis
4.5.1 Output menu - Analogue output parameter
The Analogue output parameter defines the control range of the analogue output.
Fig. 20: Output menu
Fig. 21: Analogue output parameter
Output
back
Al. Rel.
Analog
St. AOut
En. AOut
An. Err.
Analog
off
0..10V
2..10V
0..20mA
4..20mA

19
4.5.2 Output menu - Scaling start value parameter
This parameter defines the corresponding temperature value at which
0/2V and/or 0/4mA is output at the analogue output
4.5.3 Output menu - Scaling end value parameter
This parameter defines the corresponding temperature value at which 10V and/or
20mA is output at the analogue output.
Fig. 22: Scaling end value parameter
Fig. 23: Scaling end value parameter
An O St
°C
0
An O En
°C
100

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4.5.4 Output menu –Analogue output error behaviour
Defines the behavior of the analogue output when a value is exceeded or under-
cut, insofar as there are errors in the input.
4.5.5 Output menu –Alarm relay function parameter
This parameter is used for the setting of the alarm relay function.
Analogue output setting
Error behavior selection
0 ... 20mA
> 22mA
0mA
4 ... 20mA
> 22mA
<3.6mA
0 ... 10V
> 11V
0V
2 … 10V
> 11V
< 1,8V
off
Alarm relay permanently deactivated
min
Alarm relay is deactivated when the
adjusted alarm value is undercut
max
Alarm relay is deactivated when the
adjusted alarm value is exceeded
Fig. 24: Analogue output
error behaviour
Fig. 25: Alarm relay function parameter
A Error
>11V
0V
Al. Rel.
off
min.
max.