GESTRA TRS 5-52 User manual

1
EN
English
Original Installation Instructions
819175-04
Temperature Switch
TRS 5-52

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Contents
Usage for the intended purpose ..............................................................................................................4
Function .................................................................................................................................................4
Safety note .............................................................................................................................................4
Important Notes
Page
Factory settings
Factory setting......................................................................................................................................12
Directives and Standards
DIN EN 14597.........................................................................................................................................5
LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility) .......................................................5
ATEX (Atmosphère Explosible).................................................................................................................5
UL / cUL (CSA) Approval..........................................................................................................................5
Note on the Declaration of Conformity / Declaration by the Manufacturer .........................................5
Dimensions TRS 5-52 .............................................................................................................................8
Key.........................................................................................................................................................8
Installation in control cabinet ..................................................................................................................8
Name plate / marking .............................................................................................................................9
In control cabinet: Mounting temperature switch
Wiring diagram for temperature switch TRS 5-52 .................................................................................10
Key.......................................................................................................................................................10
Connection for supply voltage ...............................................................................................................11
Connection for output contacts ............................................................................................................11
Connection for temperature sensor....................................................................................................... 11
Connection for actual-value output (optional) ........................................................................................11
Tools.....................................................................................................................................................11
In control cabinet: Wiring temperature switch
Connecting temperature sensor ............................................................................................................12
Wiring diagram for temperature sensor.................................................................................................12
In the plant: Wiring temperature sensor
TRS 5-52..........................................................................................................................................6 – 7
Scope of supply ......................................................................................................................................7
Technical data

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Contents - continued -
Page
Setting switchpoints and actual-value output........................................................................................15
Commissioning procedure
Indications............................................................................................................................................16
Checking functions of MIN / MAX output contacts .................................................................................16
Operation, alarm and test
Indication, diagnosis and remedy .........................................................................................................17
Troubleshooting
Protection against high frequency interference .....................................................................................18
Decommissioning / replacing the equipment ........................................................................................18
Disposal................................................................................................................................................18
Further notes
Operating temperature switch
Key to codes on seven-segment display ...............................................................................................13
Parameter setting .................................................................................................................................14

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Important Notes
Usage for the intended purpose
The temperature switch TRS 5-52 is used in conjunction with temperature sensors TRG 5-6.. as max.
-min. limit switch, for instance in steam boilers and (pressurised) hot-water plants. The temperature
switch detects and indicates a MIN and a MAX temperature.
The temperature switch TRS 5-52 is designed for use in conjunction with temperature sensors
TRG 5-63, TRG 5-64, TRG 5-65, TRG 5-66, TRG 5-67 and TRG 5-68.
A platinum resistance thermometer Pt 100 to EN 60751 is used as temperature sensor for the tem-
perature switch TRS 5-52. A three-wire configuration is used for the electrical connection.
The temperature switch processes the temperature-dependent changes in resistance of the tempera-
ture sensor and during normal operation the seven-segment LED display shows the actual value.
The switchpoints for MIN and MAX temperature can be variably adjusted within the measuring range.
When the MIN or MAX temperature is reached, the MIN or MAX output contact is switched over and
MIN or MAX LED is illuminated.
Any error or malfunction that occurs in the temperature sensor, the electrical connection or the settings
is indicated by the seven-segment LED display and will trigger a MIN and MAX alarm.
If an error occurs in the temperature switch TRS 5-52, only the MIN and MAX alarm is raised and the
system is restarted.
Parameter settings can be changed or a MIN/MAX alarm be simulated by operating the rotary button.
For external temperature indication the equipment is optionally available with an actual-value output
4 - 20 mA.
Function
Safety note
The equipment fulfils a safety function and must only be installed, wired and commissioned by quali-
fied and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who - through adequate
training - have achieved a recognised level of competence.
Danger
The terminal strips of the equipment are live during operation.
This presents the danger of electric shock!
Always cut off power supply to the equipment before mounting, removing or connecting
the terminal strips!
Attention
The name plate specifies the technical features of the equipment. Note that any piece of
equipment without its specific name plate must neither be commissioned nor operated.

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Directives and Standards
DIN EN 14597
The temperature switch TRS 5-52 in conjunction with temperature sensor TRG 5-.. is type-approved to
DIN EN 14597.
DIN EN 14597 describes and specifies - among other things - the requirements made on tests of
temperature monitors.
ATEX (Atmosphère Explosible)
According to the European Directive 94/9/EC the equipment must not be used in explosion risk areas.
LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility)
The equipment meets the requirements of the Low Voltage Directive 2014/35/EU and the EMC Direc-
tive 2014/30/EU.
UL / cUL (CSA) Approval
The equipment meets the requirements of the Directives: UL 508 and CSA C22.2 No. 14-13, Standards
for Industrial Control Equipment. File E243189.
Note
The temperature sensors TRG 5-63, TRG 5-64, TRG 5-65, TRG 5-66, TRG 5-67 and TRG
5-68
are simple items of electrical equipment as defined in EN 60079-11 section 5.7.
According to the European Directive 94/9/EC the equipment must be equipped with ap-
proved Zener barriers if used in potentially explosive areas. Applicable in Ex zones 1, 2
(1999/92/EC).
The equipment does not bear an Ex marking.
Note on the Declaration of Conformity / Declaration by the Manufacturer
For details on the conformity of our equipment according to the European Directives see our Declara-
tion of Conformity or our Declaration of Manufacturer.
The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under
www.gestra.com/documents or can be requested from us.

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TRS 5-52
Supply voltage
24 VDC +/– 20 %
Fuse
external 0.5 A (semi-delay)
Power consumption
4 VA
Wiring temperature sensor
1 input for temperature sensor TRG 5-63, TRG 5-64, TRG 5-65, TRG 5-66, TRG 5-67 and TRG 5-68,
(platinum resistance thermometer Pt 100 to EN 60751), with 3 poles and screen.
Outputs:
2 volt-free change-over contacts, 8 A 250 V AC / 30 V DC cos ϕ= 1.
(MIN/MAX alarm, switchpoint adjustable).
Provide inductive loads with RC combinations according to manufacturer's specification to ensure
interference suppression.
1 analogue output 4-20 mA, max. load 500 ohm, e. g. for actual-value indication (optional).
Measuring range
0 °C up to 600 °C
Switching hysteresis
Switchpoint MAX temperature: –5 K, factory set.
Switchpoint MIN temperature: +5 K, factory set.
Indicators and adjustors
1 rotary button with integrated test button for MIN/MAX alarm and parameter settings,
1 four-digit seven-segment LED indication, green
2 red LEDs for MIN/MAX alarm
Housing
Housing material: base: polycarbonate, black; front: polycarbonate, grey
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 detached
Fixing of housing: Mounting clip on supporting rail TH 35, EN 60715
Electrical safety
Pollution degree 2 for installation in control cabinet with protection IP 54, completely insulated
Protection
Housing: IP 40 to EN 60529
Terminal strip: IP 20 to EN 60529
Weight
approx. 0.2 kg
Technical data

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TRS 5-52 - continued -
Ambient temperature
when system is switched on: 0 ° .... 55 °C,
during operation: -10 ... 55 °C
Transport temperature
–20 ... +80 °C (<100 hours), defrosting time of the de-energized equipment before it can be put into
operation: 24 hours.
Storage temperature
–20 ... +70 °C, defrosting time of the de-energized equipment before it can be put into operation:
24 hours.
Relative humidity
max. 95 %, no moisture condensation
Approvals:
Type approval DIN EN 14597:
Requirements made on temperature monitors,
DIN Registration number DIN TW 1232 (see name plate)
UL /cUL (CSA) Approval Approval UL 508 and CSA C22.2 No. 14-13, Standards for Industrial
Control Equipment. File E243189.
Technical Data - continued -
Scope of supply
TRS 5-52
1 Temperature switch TRS 5-52
1 Installation & operating manual

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In control cabinet: Mounting temperature switch
Dimensions TRS 5-52
Fig. 1
1Upper terminal strip
2Lower terminal strip
Key
Installation in control cabinet
The temperature switch TRS 5-52 is clipped onto the support rail type TH 35, EN 60715 in the control
cabinet. Fig. 1 4
3Body
4Supporting rail type TH 35, EN 60715
43
1
2
46
74
120 15

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Name plate / marking
In control cabinet: Mounting temperature switch - continued -
Name plate (on top)
Name plate (at the bottom)
Type designation
Supply voltage
Fuse, provided on site
Power consumption
Protection
Safety note
Disposal note
DIN Reg. no.
Output contacts
Fig. 2
Connection for
temperature sensor
Ambient temperature
External fuse for
output contacts
Connection for
actual-value output (optional)
Serial number
Manufacturer
Material no.

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In control cabinet: Wiring temperature switch
Wiring diagram for temperature switch TRS 5-52
5Connection of supply voltage 24 V DC with fuse 0.5 A (semi-delay) provided on site
6Temperature sensor TRG 5-.. , screen provided by cable gland
terminal ws = white, terminals rt = red
7Central earthing point (CEP) in control cabinet
8Actual value output 4-20 mA (optional)
9MAX output contact
0MIN output contact
Key
Fig. 3
16 17 18 19 20 21 22 23
12345678
(+)(+) (-)(-)
ws rt rt
MIN MAX
0 9
5 8
7
6
M 0.5 A
(semi-delay)