GESTRA TRS 5-52 User manual

EN
English
Original Installation &
Operating Manual
819175-05
Temperature Switch
TRS 5-52

2TRS 5-52 - Installation & Operating Manual - 819175-05
Contents
Usage for the intended purpose ..............................................................................................................4
Function .................................................................................................................................................4
Safety notes............................................................................................................................................4
Important notes
Page
Factory settings
Factory settings ....................................................................................................................................13
Directives and standards
DIN EN 14597.........................................................................................................................................5
LVD (Low Voltage Directive) and EMC (Electromagnetic Compatibility) ..................................................... 5
ATEX (Atmosphère Explosible).................................................................................................................5
UL/cUL (CSA) approval ............................................................................................................................ 5
Notes on the Declaration of Conformity/Manufacturer's Declaration .................................................5
Installation in the door of the control cabinet........................................................................................... 9
Dimensions of the TRS 5-52 .................................................................................................................10
Key....................................................................................................................................................... 10
Installation in a control cabinet .............................................................................................................10
Installation
Wiring diagram for temperature switch TRS 5-52 .................................................................................11
Key....................................................................................................................................................... 11
Supply voltage connection ....................................................................................................................12
Connecting the output contacts.............................................................................................................12
Connecting temperature sensors ..........................................................................................................12
Connecting the actual value output (optional)........................................................................................ 12
Tools.....................................................................................................................................................12
In the control cabinet: Wiring the temperature switch
Connecting temperature sensors ..........................................................................................................13
Wiring diagram for temperature sensors ...............................................................................................13
In the system: Wiring temperature sensors
TRS 5-52..........................................................................................................................................6 – 7
Product package.....................................................................................................................................7
Name plate/identification ........................................................................................................................ 8
Technical data

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TRS 5-52 - Installation & Operating Manual - 819175-05
Contents continued
Page
Setting switchpoints and the actual value output ..................................................................................16
Bringing into service
Password protection .............................................................................................................................16
Indicators .............................................................................................................................................17
Checking the function of the MIN/MAX output contacts .........................................................................17
Operation, alarm and testing
Indications, diagnosis and remedies .....................................................................................................18
Troubleshooting
Action against high-frequency interference........................................................................................... 19
Replacing/taking the equipment out of service......................................................................................19
Disposal................................................................................................................................................19
Further information
Operating the temperature switch
Meaning of codes on the 7-segment display.........................................................................................14
Setting parameters ...............................................................................................................................15

4TRS 5-52 - Installation & Operating Manual - 819175-05
Important notes
Usage for the intended purpose
The TRS 5-52 temperature switch is used in combination with the TRG 5-6.. temperature sensors as a
limit switch, e.g. in steam boilers and hot water installations. The temperature switch indicates when a
MIN and MAX temperature has been reached.
The TRS 5-52 temperature switch can be combined in a circuit with the TRG 5-63, TRG 5-64, TRG 5-65,
TRG 5-66, TRG 5-67 and TRG 5-68 temperature sensors.
A EN 60751-compliant Pt100 platinum resistance thermometer is used as a temperature sensor for the
TRS 5-52 temperature switch. It is connected in a three-wire configuration.
The temperature switch processes the variations in resistance in the temperature sensor, which vary
depending on the temperature and, in normal operation, shows these variations on the 7-segment LED
display.
The MIN or MAX temperature switchpoints can be adjusted as long as they remain within the measur-
ing range. If the MIN or MAX temperature is reached, the MIN or MAX output contact switches and the
MIN or MAX LED lights up.
Faults or malfunctions in the temperature sensor, the electrical connection or the settings are
indicated on the 7-segment LED display and the MIN and MAX alarm is triggered.
If faults occur in the TRS 5-52 temperature switch, only the MIN and MAX alarm is triggered and the
system is restarted.
Parameters can be changed or the MIN/MAX alarm simulated by operating the rotary knob.
As an option, the equipment is available with a 4-20 mA actual value output for external temperature
indication.
Function
Safety note
The equipment performs a safety function and may only be installed, wired and brought into service
by qualified and competent staff.
Retrofitting and maintenance work may only be performed by authorised staff who have achieved a
recognised level of competence through specific training.
Danger
The terminal strips of the equipment are live during operation.
There is a risk of serious injury due to electric shock!
Always cut off power to the equipment before working on the terminal strips
(installation, removal, connecting cables).
Attention
The name plate indicates the technical features of the equipment. Do not bring into
service or operate any equipment that does not bear its own specific name plate.

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TRS 5-52 - Installation & Operating Manual - 819175-05
Directives and standards
DIN EN 14597
In combination with the TRG 5-6.. temperature sensor, the TRS 5-52 temperature switch has type
approval to DIN EN 14597.
DIN EN 14597 describes the requirements for testing temperature monitors, for example.
ATEX (Atmosphère Explosible)
The equipment must not be used in potentially explosive atmospheres, in accordance with European
Directive 2014/34/EU.
LVD (Low Voltage Directive) and EMC (Electromagnetic Compatibility)
The equipment conforms to the requirements of the Low Voltage Directive 2014/35/EU
and the EMC Directive 2014/30/EU.
UL/cUL (CSA) approval
The equipment conforms to standards: UL 508 and CSA C22.2 No. 14-13, Standards for Industrial
Control Equipment. File E243189.
Note
TRG 5-63, TRG 5-64, TRG 5-65, TRG 5-66, TRG 5-67 and TRG 5-68 temperature sensors
are simple items of electrical equipment as specified in EN 60079-11 section 5.7. According
to European Directive 2014/34/EU, the equipment may be used in potentially explosive
atmospheres only in combination with approved Zener barriers. Suitable for use in Ex zones 1
and 2 (1999/92/EC).
The equipment does not have Ex classification.
Notes on the Declaration of Conformity/Manufacturer’s Declaration
For details on the conformity of our equipment with European Directives, please refer to our Declaration
of Conformity or our Manufacturer's Declaration.
The current Declaration of Conformity/Manufacturer's Declaration is available at www.gestra.com
Documents
, or can be requested from us.

6TRS 5-52 - Installation & Operating Manual - 819175-05
TRS 5-52
Supply voltage
24 VDC +/– 20%
Fuse
external 0.5A (semi-delay)
Power consumption
4 W
Connecting the temperature sensor
1 input for TRG 5-63, TRG 5-64, TRG 5-65, TRG 5-66, TRG 5-67 and TRG 5-68 temperature sensors,
(Pt100 platinum resistance thermometer to EN 60751), 3-pole with shield.
Outputs:
2 volt-free relay contacts, 6 A 250 V AC / 30 V DC cos ϕ= 1.
(MIN/MAX alarm, adjustable switchpoint).
Inductive loads must have interference suppression (RC combination) as per the manufacturer's
specification.
1 analogue output 4-20 mA, max. output load 500 ohms, e.g. for actual value indication (optional).
Measuring range
0 °C to 600 °C
Switching hysteresis
MAX temperature switchpoint: –5 K, fixed.
MIN temperature switchpoint: +5 K, fixed.
Displays and controls
1 rotary knob with integrated pushbutton for testing the MIN/MAX alarm and setting the parameters,
1 four-digit seven-segment LED display, green
2 red LEDs for MIN/MAX alarm
Housing
Housing material base of black polycarbonate; front of grey polycarbonate
Conductor size: 1 x 4.0 mm2solid per wire, or
1 x 2.5 mm2per stranded wire with sleeve to DIN 46228, or
2 x 1.5 mm2per stranded wire with sleeve to DIN 46228 (min. ∅0.1 mm)
Terminal strips can be removed separately
Housing attachment: Mounting clip on support rail TH 35, EN 60715
Electrical safety
Pollution degree 2 for installation in control cabinet with protection rating IP 54, fully insulated
IP rating
Housing: IP 40 to EN 60529
Terminal strip: IP 20 to EN 60529
Panel adapter: IP 65 to EN 60529
Weight
approx. 0.2 kg
Technical data

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TRS 5-52 - Installation & Operating Manual - 819175-05
TRS 5-52 continued
Ambient temperature
when system is switched on 0 ° ... 55 °C
in operation –10 ... 55 °C
Transport temperature
–20 ... +80 °C (<100 hours), only switch on after a defrosting period of 24 hours.
Storage temperature
–20 ... +70 °C, only switch on after a defrosting period of 24 hours.
Relative humidity
Max. 95%, non-condensing
Approvals:
Type approval DIN EN 14597: Requirements for temperature monitors.
DIN number DIN TW 1232 (see name plate)
UL/cUL (CSA)
UL 508 and CSA C22.2 No. 14-13, Standards for Industrial Control Equipment.
Approval File E243189.
Technical data continued
Product package
TRS 5-52
1 temperature switch TRS 5-52
1 Installation & Operating Manual

8TRS 5-52 - Installation & Operating Manual - 819175-05
TRS 5-52
Tamb = 55°C (131°F)T
Betriebsanleitung beachten See installation instructions Voir instructions de montage
Temperaturschalter Temperature switch Commutateur de température
MIN
MAX
250V ~ T2,5A
IP (IP20)40
GESTRA AG Münchener Str.77 28215 Bremen Made in Germany
OUT 4-20mA
500Ω
+
_
M0,5A
4W +
_
DIN TW 1232. .
24V
±20%
1
2
3
4
5 6
7
8
Pt100
TRG 5-..
Wirkweise Typ 2B
TRS 5-52
Tamb = 55°C (131°F)T
Betriebsanleitung beachten See installation instructions Voir instructions de montage
Temperaturschalter Temperature switch Commutateur de température
MIN
MAX
250V ~ T2,5A
IP (IP20)40
GESTRA AG Münchener Str.77 28215 Bremen Made in Germany
OUT 4-20mA
500Ω
+
_
M0,5A
4W +
_
DIN TW 1232. .
24V
±20%
1
2
3
4
5 6
7
8
Pt100
TRG 5-..
Wirkweise Typ 2B
Name plate/identification
Technical data continued
Name plate, top
Name plate, bottom
Type designation
Supply
voltage
Fuse,
provided on site
Power consumption
IP rating
Safety
note
Disposal
note
DIN number
Output contacts
Fig. 2
Temperature sensor
connection
Ambient temperature
External fuse for
output contacts
Connection of
actual value output
(optional)
Manufacturer
Material
number

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TRS 5-52 - Installation & Operating Manual - 819175-05
Installation
The small panel adapter with rotary knob, stock code 441553, enables the switch to be installed in the
door of a control cabinet.
The advantage of this is that the status is visible and alarms can be tested without opening the control
cabinet door. When installed, the adapter has a rating of IP65. Please refer to the panel adapter Installa-
tion & Operating Manual 850625-xx for further information.
Installation in the door of the control cabinet

10 TRS 5-52 - Installation & Operating Manual - 819175-05
In the control cabinet: Installing the temperature switch
Dimensions of TRS 5-52
Fig. 1
1Upper terminal strip
2Lower terminal strip
Key
Installation in a control cabinet
The TRS 5-52 temperature switch is clipped onto a TH 35, EN 60715 support rail in the control cabinet.
Fig. 1 4
3Housing
4Support rail TH 35, EN 60715
43
1
2
46
74
120 15

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TRS 5-52 - Installation & Operating Manual - 819175-05
In the control cabinet: Wiring the temperature switch
Wiring diagram for temperature switch TRS 5-52
5Supply voltage connection 24 V DC with 0.5A semi-delay fuse provided on site
6Temperature sensor TRG 5-6.. , shielding via cable gland
Terminal wh = white, terminals rd = red
7Central earthing point (CEP) in control cabinet
8Actual value output 4-20 mA (optional)
9MAX output contact
0 MIN output contact
Key
Fig. 3
16 17 18 19 20 21 22 23
12345678
(+)(+) (-)(-)
ws rt rt
MIN MAX
0 9
5
0.5A
(semi-
delay) 8
7
6

12 TRS 5-52 - Installation & Operating Manual - 819175-05
In the control cabinet: Wiring the temperature switch continued
Supply voltage connection
The equipment is supplied with 24 V DC and has an external 0.5A semi-delay fuse. Please use
a safety power supply unit with reliable electrical isolation.
This power supply unit must provide a level of isolation from dangerous contact voltages that
at least meets the requirements for double or reinforced insulation in accordance with one of the follow-
ing standards: DIN EN 50178, DIN EN 61010-1, DIN EN 60730-1 or DIN EN 60950.
Connecting the temperature sensor
To connect the equipment, please use a shielded, multi-core control cable with a minimum conductor
size of 0.5mm2, e.g. LiYCY 3 x 0.5mm2, maximum length 100m.
Wire the terminal strip as shown in the wiring diagram. Fig. 3
The shield is applied only to the temperature sensor via the cable gland.
Route the connecting cables to the equipment separately from power lines.
Connection of output contacts
Wire the upper terminal strip 1(terminals 16-23) in line with the desired switching functions.
Provide an external 2.5A slow-blow fuse for the output contacts.
Switching off inductive loads produces surges that can have a major adverse effect on the operation of
open and closed-loop control systems. Connected inductive loads must therefore
have interference suppression (RC combination) as per the manufacturer's specifications.
Tools
nScrewdriver size 3.5 x 100 mm, fully insulated to VDE 0680-1.
Attention
nDo not use unused terminals as support terminals.
Connecting the actual value output (optional)
For connection, please use a shielded, multi-core control cable with a minimum conductor
size of 0.5 mm2, e.g. LiYCY 2 x 0.5mm2, maximum length 100m.
Please note the maximum output load of 500 ohms.
Wire the terminal strip as shown in the wiring diagram. Fig. 3
Connect the shield just once to the central earthing point (CEP) in the control cabinet.
Route connecting cables separately from power cables.
Any item of equipment that you wish to connect to the terminals for the 4-20 mA actual value output
must be certified to have at least double or reinforced insulation to DIN EN 50178 or DIN 61010-1 or
DIN EN 60730-1 or DIN EN 60950 between the current loop and live parts of the equipment that are not
supplied with safety extra-low voltage (SELV).

13
TRS 5-52 - Installation & Operating Manual - 819175-05
In the system: Wiring temperature sensors
Connecting the temperature sensor
The TRS 5-52 temperature switch can be combined in a circuit with the TRG 5-63, TRG 5-64, TRG 5-65,
TRG 5-66, TRG 5-67 and TRG 5-68 temperature sensors.
To connect the equipment, please use a shielded, multi-core control cable with a minimum conductor
size of 0.5mm2, e.g. LiYCY 3 x 0.5mm2, maximum length 100m.
The shield is applied only to the temperature sensor via the cable gland.
Attention
nPlease refer to the TRG 5-6x Installation & Operating Manual.
n Route connecting cables to items of equipment separately from power lines.
Note
Alternatively, indicating devices can be connected to the terminals of the
TRG 5-64 and TRG 5-68, marked yellow and black above. Fig. 12
Factory settings
Temperature switch TRS 5-52
The temperature switch is supplied with the following factory settings:
nMAX switchpoint AL.Hi = 150 °C, reset hysteresis: – 5 K (fixed)
nMIN switchpoint AL.Lo = 50 °C, reset hysteresis: + 5 K (fixed)
nCurrent output Sout 20 mA = 200 °C
nPassword PW: oFF
Code switch: All switches OFF
Wiring diagram for temperature sensors
Fig. 4
5
5
3
3
2
2
6
6
yellow black
red
TRG 5-63, TRG 5-65,
TRG 5-66, TRG 5-67
TRG 5-64
TRG 5-68
black
TRS 5-..
TRS 5-..

14 TRS 5-52 - Installation & Operating Manual - 819175-05
Operating the temperature switch
Meaning of codes on the 7-segment display
Code Meaning
Appears when rotary knob is turned clockwise:
AL.Hi Alarm High MAX switchpoint
AL.Lo Alarm Low MIN switchpoint
Sout Current out Upper limit of actual value output, adjustable between 0 and 600 °C
tESt Test Output relays are tested
PW Password on = password protection is enabled
oFF = password protection is disabled
Factory setting 1902 (cannot be changed)
Appears in parameterization mode
quit Quit Input is not confirmed
done Done Input is confirmed
Appears in the event of malfunctions
E.005 Error Temperature sensor defective, reading too low
E.006 Error Temperature sensor defective, reading too high
E.013 Error MIN switchpoint higher than MAX switchpoint
Fig. 5
MAX LED
red
MIN LED
red
7-segment
display
Rotary knob
with integrated
pushbutton
OO75

15
TRS 5-52 - Installation & Operating Manual - 819175-05
Starting
Action Indication Function
Switch on the supply voltage.
Temperature between MIN
and MAX.
7-segment display shows
software and equipment
version
System test, takes approx. 3 sec.
7-segment display shows
actual value System switches to operating mode
Setting parameters
Action 7-segment display Function
Turn the rotary knob until the
desired parameter is shown
Display toggles between the
parameter and the saved value. The parameter is selected
Press and hold the pushbutton
(on rotary knob) First digit (100) flashes. Parameterization mode active. First digit can be
changed.
Turn the rotary knob A new value is displayed. Turning clockwise increases the value, turning
anti-clockwise reduces the value.
Briefly press the pushbutton.
The number increases with
each press.
2nd or 3rd digit flashes.
(from right to left)
2nd or 3rd digit can be changed using the rotary
knob. Turning clockwise increases the value,
turning anti-clockwise reduces the value.
If you do not take any further
action:
quit is briefly displayed. After
this, the display toggles
between the parameter and the
old value.
The parameter is automatically shown once
more and your entry is not confirmed.
When your entries are
complete: press and hold the
pushbutton
done is displayed. After this,
the display toggles between
the parameter and the new
value.
Your entry is confirmed and the parameter is
automatically shown once more.
Turn the rotary knob until the next parameter is shown.
Or turn the rotary knob until the actual value is displayed.
Or after 30s, the actual value is displayed automatically.
Operating the temperature switch continued
Setting parameters
Fig. 5
MAX LED
red
MIN LED
red
7-segment
display
Rotary knob
with integrated
pushbutton
OO75

16 TRS 5-52 - Installation & Operating Manual - 819175-05
Bringing into service
Setting the MIN/MAX switchpoints
Action Function
Select parameter AL.Lo, enter and save the desired
temperature. MIN switchpoint is set between 0-600 °C
Select parameter AL.Hi, enter and save the desired
temperature. MAX switchpoint is set between 0-600 °C
Setting the limit of the actual value output
Select parameter Sout, enter and save the desired
temperature. Set between 0-600 °C
Setting switchpoints and the actual value output
If password protection is enabled, you must enter the password before you can change
parameters.
Operation, alarm and testing
Enabling password protection
Action Display Function
Turn the rotary knob until the
entry PW is shown.
The display toggles between the para-
meter name and the parameter value. Parameter selected.
Press and hold the pushbutton (on
rotary knob). PASS Password entry is required.
Release and then press and hold
the pushbutton once more. First digit (0000) flashes. Enter the password starting with the
digit on the right.
Turn the rotary knob clockwise
or anti-clockwise to enter the
required digit.
000X The first digit is entered.
Briefly press the pushbutton. Second digit from the right flashes
(000X). The second digit can be entered.
Repeat the last two steps until the
password has been entered in full.
The entered password is displayed
(XXXX). The password is entered in full.
Press and hold the pushbutton.
donE The correct password was entered.
The parameter may be edited.
FAiL The wrong password was entered. The
parameter is still password-protected.
quit
Processing time has elapsed. System
switches back to the parameter.
Password entry is cancelled.
Disabled password protection is re-enabled after 30 minutes without any activity (rotary knob). The password must
be entered again. When the equipment is restarted, the parameters are password-protected, if password protection
was previously enabled.
Password protection
Parameters can be password-protected from software version “S-13” onwards. The default password is
1902 and cannot be changed.

17
TRS 5-52 - Installation & Operating Manual - 819175-05
Testing the MIN alarm and MAX alarm
Action Indication Function
In operating mode:
Temperature between MIN
and MAX
Select Test parameter. Press
and hold the pushbutton.
MAX LED flashes for 3 seconds
MAX LED lights up red for 3
seconds MAX output contact 21/23 closed, 22/23 open.
The MIN and MAX LED do not
light up for 1 second
MAX output contact 21/23 open, 22/23 closed.
MIN output contact 16/18 open, 17/18 closed.
MIN LED flashes for 3 seconds
MIN LED lights up red for 3
seconds
MIN output contact 16/18 closed,
17/18 open.
Test complete, release
pushbutton. Equipment
switches to operating mode.
Note: If you continue holding the pushbutton, the test sequence will start again.
You can interrupt the test sequence at any time by releasing the pushbutton.
If the test was failed, replace the temperature switch.
Checking the function of the MIN/MAX output contacts
Operating, alarm and testing continued
Indications
Operation
Action Indication Function
Temperature between MIN
and MAX. MIN and MAX LEDs are not lit MIN output contacts 16/18 open, 17/18 closed.
MAX output contacts 21/23 open, 22/23 closed.
MIN alarm
Temperature below MIN
switchpoint. MIN LED lights up red MIN output contacts 16/18 closed, 17/18 open.
MAX alarm
Temperature above MAX
switchpoint. MAX LED lights up red Delay time elapsed, MAX output contacts 21/23
closed, 22/23 open.
Note
The actual value is shown on the 7-segment display.

18 TRS 5-52 - Installation & Operating Manual - 819175-05
Attention
Please check the following before fault diagnosis:
Supply voltage:
Is the temperature switch supplied with the voltage specified on the name plate?
Wiring:
Does the wiring conform to the wiring diagram?
Troubleshooting
Indications, diagnosis and remedies
Error codes on the 7-segment display
Error code Error Remedy
E.005 Temperature sensor defective, reading too
low
Check whether the temperature sensor is sending the
correct readings. In the event of deviations, please
replace the sensor unit. Check the
sensor lines (short circuit, open circuit?).
E.006 Temperature sensor defective, reading too
high
E.013 MIN switchpoint higher than MAX switch-
point Reset switchpoints
E.097 Walkthrough application error Internal error. Replace equipment.
E.098 Walkthrough test error Internal error. Replace equipment.
E.099 Internal test error Internal error. Replace equipment.
In the event of a malfunction, the MIN and MAX alarm is triggered.
All error codes not listed here are available as reserves.
Attention
nFor further diagnosis, please refer to the Installation & Operating Manuals for the
TRG 5-6..
Note
In the event of a malfunction in the temperature switch, the MIN and MAX alarm is trig-
gered and the equipment restarts.
If the process is continually repeated, the equipment must be replaced.

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TRS 5-52 - Installation & Operating Manual - 819175-05
Action against high-frequency interference
High-frequency interference can be caused by out-of-phase switching operations. If such interference
occurs and results in sporadic failure, we recommend taking the following action to suppress interference:
nProvide inductive loads with RC combinations as per manufacturer's specifications.
nRoute the connecting cable to the temperature sensor separately from power lines.
nIncrease the distance from sources of interference.
nCheck the shield connection on the temperature sensor.
nSuppress HF interference using hinged-shell ferrite rings.
Further information
Replacing/taking the equipment out of service
Disposal
The equipment must be disposed of in accordance with statutory waste disposal regulations.
The upper terminal strip of the equipment is live during operation.
There is a risk of serious injury due to electric shock!
Always cut off power to the equipment before working on the terminal strip (installation,
removal, connecting cables).
Danger
nSwitch off the supply voltage and cut off power to the equipment.
nRemove the upper and lower terminal strips. Fig. 6
nInsert a screwdriver on the right and left between the terminal strip and the front frame,
as shown by the arrows.
nRelease the terminal strip on the right and left sides, by turning the screwdriver in the direction of
the arrow.
nRemove the terminal strips.
Fig. 6
nRelease the white slider holder on the underside of the housing and remove the equipment from
the support rail.
5678123 4
1
ON 234
In the event of malfunctions or faults that cannot be remedied with the aid of this Installation & Operat-
ing Manual, please contact our service centre or authorised agent in your country.

819175-05/11-2021cm (808880-05) · GESTRA AG · Bremen · Printed in Germany
GESTRA AG
Münchener Straße 77
28215 Bremen
Germany
Tel. [phone]
Fax [phone]
E-mail [email protected]
Website www.gestra.com
You can find our authorised agents around the world at: www.gestra.com