Thank you very much for buying a TB 45 temperature monitor.
TB 45 temperature limiter are used for process monitoring. The units provide process value measurement, limit signal
ling and switch-off. Possible applications are heating and cooling processes. Configuration as an electronic tempera
ture limiter, temperature monitor or as a limit signaller is possible.
A TB 45 offers one universal input, one limit contact and one pre-alarm contact. Optionally, the unit can be equipped
with one universal output
Galvanic isolation of inputs and outputs, supply voltage and communication interfaces is provided.
Applications
TB 45 can be used as a
TB 45 as a DIN-certified temperature limiter/monitor (type2) can be used in systems in which exceeding of a defined
temperature causes damage.
At-a-glance survey of advantages
Compact construction, only 22,5 mm wide
Clips onto top-hat DIN rail
Plug-in screw terminals or spring clamp connectors
Dual-line LC display with additional display elements
Process values always in view
Convenient 3-key operation
Direct communication between rail-mounted transmitters
Universal input with high signal resolution (>14 bits) reduces stock keeping
Universal output with high resolution (14 bits) as combined current / voltage output
Quick response, only 100 ms cycle time
Usable as temperature limiter/monitor or as general limit indicator
Customer-specific linearization
Measurement value correction (offset or 2-point)
Second analog input for differential measurement, oxygen direct-measurement etc.
certified temperature limiter/monitor to DIN 3440 / EN 14597
–
or as a limit signaller for various process signals.
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General
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-
Further documentation for temperatur limiter TB 45:
–
Datasheet TB 459498 737 48413
–
Operating hint TB 459499 040 93641
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Interface description9499 040 72011
TB 455
General
1.1Application in thermal plants
In many thermal plants, only the use of approved control instruments is permissible.
TheTB 45 version (TB45-2xx-xxxxx-Dxx) meets the requirements as an electronic temperature limiter/monitor
(TB/TW, type 2.B.J.V) according to DIN 3440 and EN 14597.
This version is suitable for use in heat generating plants, e.g. in
building heating systems acc. to DIN EN 12828 (formerly DIN 4751)
•
large water boilers acc. to DIN EN 12953-6 (formerly DIN 4752)
•
heat conducting plants with organic heat transfer media acc. to DIN 4754
•
oil-fired plants to DIN 4755
•
…
Temperature monitoring in water, oil and air is possible by means of suitable approved probes.
6Application in thermal plantsTB 45
2Safety hints
.
This unit was built and tested in compliance with VDE 0411-1 / EN 61010-1 and was delivered in safe condition.
The unit complies with European guideline 89/336/EWG (EMC) and is provided with CE marking.
The unit was tested before delivery and has passed the tests required by the test schedule. To maintain this condition
and to ensure safe operation, the user must follow the hints and warnings given in this operating manual.
Safety hints
a
a
The unit is intended exclusively for use as a measurement and control instrument in technical
installations.
Warning
If the unit is damaged to an extent that safe operation seems impossible, the unit must not be taken into operation.
ELECTRICAL CONNECTIONS
The electrical wiring must conform to local standards (e.g. VDE 0100). The input measurement and control leads must
be kept separate from signal and power supply leads.
In the installation of the unit a switch or a circuit-breaker must be used and signified. The switch or circuit-breaker
must be installed near by the unit and the user must have easy access to the unit.
COMMISSIONING
Before instrument switch-on, check that the following information is taken into account:
Ensure that the supply voltage corresponds to the specifications on the type label.
•
All covers required for contact protection must be fitted.
•
If the unit is connected with other units in the same signal loop, check that the equipment in the
•
output circuit is not affected before switch-on. If necessary, suitable protective measures must be
taken.
The unit may be operated only in installed condition.
•
Before and during operation, the temperature restrictions specified for unit operation must be met.
•
a
a
a
Warning
The instrument is intended for mounting in an enclosure. Its contact safety is ensured by installation in a
housing or switch cabinet.
Warning
The ventilation slots must not be covered during operation.
The measuring inputs are appropriate for the measurement of electric circuits, which are not directly
(CAT I) connected with the supply network . The measuring entrances are appropriate for transient
overvoltage to 800V against PE.
SHUT-DOWN
For taking the unit out of operation, disconnect it from all voltage sources and protect it against accidental operation.
If the unit is connected with other equipment in the same signal loop, check that other equipment in the output circuit
is not affected before switch-off. If necessary, suitable protective measures must be taken.
TB 457
Safety hints
2.1Maintenance, repair, modification
The units do not need particular maintenance.
There are no operable elements inside the device, so the user must not open the unit
Modification, maintenance and repair work may be done only by trained and authorized personnel. For this purpose, the
PMA service should be contacted.
a
l
g
Warning
When opening the units, or when removing covers or components, live parts and terminals may be exposed.
Connecting points can also carry voltage.
Caution
When opening the units, components which are sensitive to electrostatic discharge (ESD) can be exposed.
The following work may be done only at workstations with suitable ESD protection.
Modification, maintenance and repair work may be done only by trained and authorized personnel. For this purpose, the
PMA service should be contacted.
You can contact the PMA-Service under:
PMA Prozeß- und Maschinen-Automation GmbH
Miramstraße 87
D-34123 Kassel
The cleaning of the front of the unit should be done with a dry or a wetted (spirit, water) handkerchief.
2.3Spare parts
As spare parts für the devices the following accessory parts are allowed:
DescriptionOrder-No..
Connector set with screw terminals9407-998-07101
Connector set with spring-clamp terminals9407-998-07111
Bus connector for fitting in top-hat rail9407-998-07121
8Maintenance, repair, modificationTB 45
3Mounting
%
max.
95% rel.
max.
55°C
-10°Cmin.
22.5
(0,87”)
117.5 (4,63”)
99 (3,90”)
2.3
111 (4,37”)
5.5
(0,08”)
(0,20”)
click
Montage / mounting
Abmessungen / dimensions
Demontage / dismantling
1
Klemme /
terminal
56
7
8
12
3
4
1516
17
18
11 1 2
13
14
Klemme /
terminal
.
Mounting
The unit is provided for vertical mounting on 35 mm top-hat rails to EN 50022.
If possible, the place of installation should be exempt of vibration, aggressive media (e.g. acid, lye), liquid, dust or aero-
sol.
The instruments of the rail line series can be mounted directly side by side. For mounting and dismounting, min. 8 cm
free space above and below the units should be provided.
For mounting, simply clip the unit onto the top-hat rail from top and click it in position.
g
a
a
a
l
a
a
TB 459
To dismount the unit, pull the bottom catch down using a screwdriver and remove the unit upwards.
TB 45 temperature limiter does not contain any maintenance components and need not be opened by the
customer.
The unit may be operated only in environments for which it is suitable due to its protection type.
The housing ventilation slots must not be covered.
In plants where transient voltage peaks are susceptible to occur, the instruments must be equipped with
additional protective filters or voltage limiters!
Caution! The instrument contains electrostatically sensitive components.
Please, follow the instructions given in the safety hints.
For maintaining contamination degree 2 to EN 61010-1, the unit must not be installed below contactors or
similar equipment from which conductant dusts or particles are susceptible of trickling down.
Mounting
3.1Connectors
g
a
a
The four instrument connectors are of the plug-in type. They plug into the housing from top or bottom and click in posi
tion (audible latching). Releasing the connectors should be done by means of a screwdriver.
Two connector types are available:
Screw terminals for max. 2,5 mm2conductors
•
Spring-clamp terminals for max. 2,5 mm2conductors
•
Before handling the connectors, the unit must be disconnected from the supply
voltage.
Tighten the screw terminals with a torque of 0,5 - 0,6 Nm.
With spring-clamp terminals, stiff and flexible wires with end crimp can be introduced into
the clamping hole directly. For releasing, actuate the (orange) opening lever.
Contact protection: Terminal blocks which are not connected should remain in
the socket.
Standard wires must be terminated with cable terminal sleeves.
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10ConnectorsTB 45
4Electrical connections
Data A
Data A
Data B
Data B
V
14
13
12
16
15
11
mV
17
18
INP1
OUT3
PWR
L
N
LC
OUT2
~90-250V
~24V
di1
8
76
3
2
1
5
3
4
RGND
RGND
RS 485
1
2
a
3
4
5
6
c
d
e
f
g
a
b
Logic
V
h
i
j
k
11 12 13 14
11 12 13 14
15 16 17 18
15 16 17 18
1234
1234
top
16
15
17
18
System
.
4.1Connecting diagram
Electrical connections
4.2
a
g
Terminal connections
Faulty connection can lead to the destruction of the instrument.
1 Connecting the supply voltage
Dependent on order
90 … 250 V ACterminals: 15,16
w
24 V AC / DCterminals: 15,16
w
For further information, see section 12 "Technical data"
Instruments with optional system interface:
Energization is via the bus connector of field bus coupler or power supply module. Terminals 15, 16 must
not be used.
* see interface description MODBUS RTU: (9499-040-72011)
LCterminals: 17, 18
w
OUT2terminals: 17, 14
w
12Terminal connectionsTB 45
4.3Connecting diagram
The instrument terminals used for the engineering can be displayed and printed out via BlueControl( menu File \ Print
preview - Connection diagram).
Example:
Electrical connections
TB 45Connecting diagram13
Electrical connections
INP2
INP1
PWR
OUT3
di1
L1
N1
14
13
12
17
16
15
11
18
PWR
8
7
6
3
2
1
5
4
+
Fuse
Heating
INP1
PWR
LC
di1
14
13
12
17
16
15
11
18
PWR
8
7
6
3
2
1
5
4
+
Fuse
+
_
SSR
Contactor
Fuse
Logic
Resetbutton
TB 45
temperature limiter
KS 45
L2
N2
+
+
Master z.B. / e.g.
Converter RS 232-RS 485
(ADAM-4520-D)
DATA+ 1
DATA-
TX+
TXRX+
RX-
(R)+Vs
(B)GND 10
Data A
Data A
Data B
Data B
RGND
(RS-485)
(RS-422)
LT 1
LT 1
2
3
4.4Connection examples
Connection example: KS 45 and TB 45
Example: RS 485 interface with RS 485-RS 232 converter
See documentation 9499-040-72011
14Connection examplesTB 45
4.5Hints for installation
Measurement and data lines should be kept separate from control and power supply cables.
•
Sensor measuring cables should be twisted and screened, with the screening connected to earth.
•
External contactors, relays, motors, etc. must be fitted with RC snubber circuits to manufacturer specifications.
•
The unit must not be installed near strong electric and magnetic fields.
•
The temperature resistance of connecting cables should be selected appropriately for the local conditions.
•
Electrical connections
a
a
a
a
The unit is not suitable for installation in explosion-hazarded areas.
Faulty connection can lead to the destruction of the instrument.
The measuring inputs are designed for measurement of circuits which are not connected directly with the
local mains (CAT I). The measuring inputs are designed for transient voltage peaks up to 800 V against PE.
Please, follow the instructions given in the safety hints (see page 7).
TB 45Hints for installation15
Operation
5Operation
.
5.1Front view
1Display line 1: process value or limit value LC
2Display line 2: limit value LC / unit /
extended operating level/ error list
3Operation mode “Temperature limiter”
4Error list (2 x ô ), e.g.
5Increment key
6Enter key to select extended operating level or error list
7Status indicator LEDs
• green:limit value 1 OK
• green blinking:no data exchange with bus coupler
• red:limit value 1 active
• red blinking: instrument fault
8Display elements, active as bars
9Status of switching output LC active
0Status of switching output OUT2 active
!Decrement key
§PC connection for the BlueControl
• Fbf. xsensor fault INP. X
• sht. xshort circuit INP. X
• Pol. xwrong polarity INP. X
• Lim. xlimit value alarm
• ...
(only on instruments with optional
system interface)
engineering tool
g
+
6 + 5:The error list can be reset by pressing this key
combination.
In the first LCD-display line the measured value or limit value is shown (parameterizable). The second
LCD-line normally shows the limit value LC. When changing over to the parameter setting, configuration or
calibration level and at the extended operating level, the parameter name and value are displayed
alternately.
§ : To facilitate withdrawal of the PC connector from the instrument, please, press the cable left.
16Front viewTB 45
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