Pepperl+Fuchs Pulscon LTC50 Manual

ISO9001
3
Pulscon LTC50
Guided Level Radar
PROCESS AUTOMATION
TECHNICAL INFORMATION

With regard to the supply of products, the current issue of the following document is applicable:
The General Terms of Delivery for Products and Services of the Electrical Industry,
published by the Central Association of the Electrical Industry (Zentralverband Elektrotechnik und
Elektroindustrie (ZVEI) e.V.) in its most recent version as well as the supplementary clause:
"Expanded reservation of proprietorship"
Application
• Rod or rope probe
• Process connection: 3/4 in thread or adapter flange
• Temperature: -20 ... +80 °C (-4 ... +176 °F)
• Pressure: -1 ... +6 bar (-14.5 ... +87 psi)
• Maximum measuring range: rod 4 m (13 ft); rope 12 m (39 ft)
• Accuracy: ±2 mm (0.08 in)
• International explosion protection certificates; WHG; EN 10204-3.1
• Linearity protocol (3-point, 5-point)
Yo u r b e n e f i t s
• Reliable measurement even for changing product and process conditions
• HistoROM data management for easy commissioning, maintenance and diagnostics
• Highest reliability due to Multi-Echo tracking
• Hardware and software developed according to IEC 61508 (up to SIL3)
• Seamless integration into control or asset management systems
• Intuitive user interface in national languages
• Easy proof test for SIL and WHG
Pulscon LTC50

Pulscon LTC50
Content
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1 Important document information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Function and system design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Measuring principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Life cycle of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Measured variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3 Blocking distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Measuring frequency spectrum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Linearization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4 Galvanic isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5 Protocol-specific data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Terminal assignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 Device plug connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.5 Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.6 Power supply failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.7 Potential equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.8 Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.9 Cable entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.10 Cable specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.11 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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6 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1 Reference operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.2 Maximum measured error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.3 Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.4 Reaction time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.5 Influence of ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.1 Mounting requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8 Operating conditions: Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.1 Ambient temperature range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.2 Ambient temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.3 Storage temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.4 Climate class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.5 Altitude according to IEC 61010-1 Ed.3 . . . . . . . . . . . . . . . . . . . . . . . . 54
8.6 Degree of protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.7 Vibration resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.8 Cleaning the probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.9 Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . 55
9 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.1 Process temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.2 Process pressure range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.3 Dielectric constant (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.4 Expansion of the rope probes through temperature . . . . . . . . . . . . . 56

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Content
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10 Mechanical construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
10.1 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
10.2 Tolerance of probe length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10.3 Shortening probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10.4 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10.5 Materials: A1 (GT19) housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10.6 Materials: A2 (GT20) housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.7 Materials: Process connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
10.8 Materials: Probe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
10.9 Materials: Mounting bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.10 Materials: Adapter and cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.11 Materials: Weather protection cover . . . . . . . . . . . . . . . . . . . . . . . . . . 67
11 Operability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.1 Operating concept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.2 Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.3 Remote operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12 Certificates and approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.1 CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.2 C-Tick symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.3 Ex approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.4 Dual seal according to ANSI/ISA 12.27.01 . . . . . . . . . . . . . . . . . . . . . . 72
12.5 Functional Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.6 Overfill prevention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.7 Telecommunications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12.8 Other standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

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Content
13 Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
13.1 Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
13.2 Product structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
13.3 5-point linearity protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
13.4 Customized parametrization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
14 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
14.1 Device-specific accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
14.2 Communication-specific accessories . . . . . . . . . . . . . . . . . . . . . . . . . 84
14.3 Service-specific accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
14.4 System components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
15 Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
15.1 Standard documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
15.2 Safety documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
16 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
17 Patents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Pulscon LTC50
Important document information
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1 Important document information
1.1 Symbols
1.1.1 Symbols used
This document contains information that you must read for your own personal safety and to
avoid property damage. Depending on the hazard category, the warning signs are displayed in
descending order as follows:
Safety-relevant symbols
Informative symbols
Action
This symbol indicates a paragraph with instructions.
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
Caution!
This symbol indicates a possible fault.
Non-observance could interrupt devices and any connected facilities or systems, or result in
their complete failure.
Note!
This symbol brings important information to your attention.

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Pulscon LTC50
Important document information
1.1.2 Electrical symbols
1.1.3 Symbols in graphics
Symbol Meaning
Direct current
A terminal to which DC voltage is applied or through which direct
current flows.
Alternating current
A terminal to which alternating voltage is applied or through which
alternating current flows.
Direct current and alternating current
• A terminal to which alternating voltage or DC voltage is applied.
• A terminal through which alternating current or direct current
flows.
Ground connection
A grounded terminal which, as far as the operator is concerned, is
grounded via a grounding system.
Protective ground connection
A terminal which must be connected to ground prior to establishing
any other connections.
Equipotential connection
A connection that has to be connected to the plant grounding
system: This may be a potential equalization line or a star grounding
system depending on national or company codes of practice.
Table 1.1
)
*
Symbol Meaning
1, 2, 3 ... Item numbers
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
Hazardous area
Indicates a hazardous area.
Safe area (non-hazardous area)
Indicates a non-hazardous location.
Table 1.2
,… ,1. 2. 3.
-
.

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Function and system design
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2 Function and system design
2.1 Measuring principle
2.1.1 Basic principles
The device is a "downward-looking" measuring system that functions according to the ToF
method (ToF = Time of Flight). The distance from the reference point to the product surface is
measured. High-frequency pulses are injected to a probe and led along the probe. The pulses
are reflected by the product surface, received by the electronic evaluation unit and converted
into level information. This method is also known as TDR (Time Domain Reflectometry).
Figure 2.1 Parameters for level measurement with the guided radar
2.1.2 Dielectric constant
The dielectric constant (DC) of the medium has a direct impact on the degree of reflection of
the high frequency pulses. In the case of large DC values, such as for water or ammonia, there
is strong pulse reflection while, with low DC values, such as for hydrocarbons, weak pulse
reflection is experienced.
LN Probe length
DDistance
LLevel
RReference point of measurement
EEmpty calibration (= zero)
FFull calibration (= span)
F
L
D
E
20 mA
100%
4mA
0%
LN
R
Note!
If, for rope probes, the DC value is less than 7, then measurement is not possible in the area of
the straining weight (0 to 250 mm from end of probe; lower blocking distance).

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Function and system design
2.1.3 Input
The reflected pulses are transmitted from the probe to the electronics. There, a
microprocessor analyzes the signals and identifies the level echo which was generated by the
reflection of the high-frequency pulses at the product surface. This clear signal detection
system benefits from over 30 years' experience with pulse time-of-flight procedures.
The distance D to the product surface is proportional to the time of flight t of the impulse:
D = c x t / 2,
where c is the speed of light.
Based on the known empty distance E, the level L is calculated:
L = E –D
The device possesses functions for interference echo suppression that can be activated by the
user. They guarantee that interference echoes from e. g. internals and struts are not
interpreted as level echoes.
2.1.4 Output
The device is preset at the factory to the probe length ordered so that in most cases only the
application parameters that automatically adapt the device to the measuring conditions need
to be entered. For models with a current output, the factory adjustment for zero point E and
span F is 4 mA and 20 mA, for digital outputs and the display module 0 % and 100 %. A
linearization function with max. 32 points, which is based on a table entered manually or semi-
automatically, can be activated on site or via remote operation. This function allows the level to
be converted into units of volume or mass, for example.
2.2 Life cycle of the product
Engineering
• Universal measuring principle
• Measurement unaffected by medium properties
• Hardware and software developed according to SIL IEC 61508
Procurement
• Pepperl+Fuchs being the world market leader in level measurement guarantees asset
protection
• Worldwide support and service
Installation
• Special tools are not required
• Reverse polarity protection
• Modern, detachable terminals
• Main electronics protected by a separate connection compartment
Note!
The reference point R of the measurement is located at the process connection.
See chapter 10.

Pulscon LTC50
Function and system design
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Commissioning
• Fast, menu-guided commissioning in only 6 steps
• Plain text display in national languages reduces the risk of error or confusion
• Direct local access of all parameters
• Short instruction manual at the device
Operation
• Multi-echo tracking: Reliable measurement through self-learning echo-search algorithms
taking into account the short-term and long-term history in order to check the found echoes
for plausibility and to suppress interference echoes.
• Diagnostics in accordance with NAMUR NE 107
Maintenance
• HistoROM: Data backup for instrument settings and measured values
• Exact instrument and process diagnosis to assist fast decisions with clear details
concerning remedies
• Intuitive, menu-guided operating concept in national languages saves costs for training,
maintenance and operation
• Cover of the electronics compartment can be opened in hazardous areas
Retirement
• Order code translation for subsequent models
• RoHS-conforming (Restriction of certain Hazardous Substances), unleaded soldering of
electronic components
• Environmentally sound recycling concept

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Function and system design
2.3 Measuring system
2.3.1 General notes on probe selection
Normally use rod probes for liquids. Rope probes are used in liquids for measuring ranges
> 4 m (13 ft) and with restricted ceiling clearance which does not allow the installation of rigid
probes.
Probe selection
The various types of probe in combination with the process connections are suitable for the
following applications
1
:
1
If required, rod and rope probes can be replaced. They are secured with Nord-Lock washers or a thread coating.
For further information on service and spare parts please contact the Pepperl+Fuchs service.
Type of probe Rod probe Rope probe
Feature
"Probe"
Option Option
18 mm (316L) 24 mm (316)
51/3 in (316L) 31/6 in (316)
Max. probe
length 4 m (13 ft) 12 m (40 ft)
For application level measurement in liquids
Table 2.1

Pulscon LTC50
Input
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3Input
3.1 Measured variable
The measured variable is the distance between the reference point and the product surface.
Subject to the empty distance entered E the level is calculated.
Alternatively, the level can be converted into other variables (volume, mass) by means of
linearization (32 points).
3.2 Measuring range
The following table describes the media groups and the possible measuring range as a
function of the media group.
Pulscon LTC50
Media
group
DC (
r
)Typical liquids Measuring range
bare metallic
rod probes
bare metallic
rope probes
11.4 ... 1.6 condensed gases, e. g. N
2
, CO
2
on request
21.6 ... 1.9 • liquefied gas, e. g. propane
•solvent
•Freon
•palmoil
4m(13ft) 12 m (39 ft)
31.9 ... 2.5 mineral oils, fuels 4m(13ft) 12 m (39 ft)
42.5 ... 4 • benzene, styrene, toluene
•furan
• naphthalene
4m(13ft) 12 m (39 ft)
54...7 • chlorobenzene, chloroform
• cellulose spray
• isocyanate, aniline
4m(13ft) 12 m (39 ft)
6>7 • aqueous solutions
•alcohols
• acids, alkalis
4m(13ft) 12 m (39 ft)
Table 3.1
Note!
Reduction of the max. possible measuring range through buildup, above all of moist products.

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Input
3.3 Blocking distance
The upper blocking distance (= UB) is the minimum distance from the reference point of the
measurement (mounting flange) to the maximum level.
Figure 3.1 Definition of blocking distance and safety distance
Blocking distance (factory setting):
• with rod and rope probes up to 8 m (26 ft): 200 mm (8 in)
• with rod and rope probes exceeding a length of 8 m (26 ft): 0.025 x (length of probe)
3.4 Measuring frequency spectrum
100 MHz to 1.5 GHz
RReference point of measurement
LN Probe length
UB Upper blocking distance
EEmpty calibration (= zero)
FFull calibration (= span)
SD Safety distance
F
UB
E
100%
0%
LN
R
SD
Note!
The specified blocking distances are preset on delivery. Depending on the application these
settings can be changed.
For rod and rope probes and for media with DC > 7 (or generally for stilling well/bypass
applications) the blocking distance may be reduced to 100 mm (4 in).
Within the blocking distance, a reliable measurement can not be guaranteed.
Note!
A safety distance SD can be defined in addition to the blocking distance. A warning is
generated if the level rises into this safety distance.

Pulscon LTC50
Output
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4Output
4.1 Output signal
HART
PROFIBUS PA
Switch output
Signal coding FSK ±0.5 mA over currency signal
Data transmission rate 1200 Baud
Galvanic isolation Yes
Table 4.1
Signal coding Manchester Bus Powered (MBP)
Data transmission rate 31.25 kBit/s, voltage mode
Galvanic isolation Yes
Table 4.2
Note!
For HART devices, the switch output is available as an option. See product structure, feature
"Electrical Output", option ID. Devices with PROFIBUS PA always have a switch output.
Switch output
Function Open collector switching output
Switching behavior Binary (conductive or non-conductive), switches when the
programmable switch point is reached
Failure mode non-conductive
Electrical connection values U = 10.4 ... 35 V DC, I = 0 ... 40 mA
Internal resistance R
I
< 880 
The voltage drop at this internal resistance has to be taken
into account on planning the configuration. For example, the
resulting voltage at a connected relay must be sufficient to
switch the relay.
Insulation voltage floating, Insulation voltage 1350 V DC to power supply and
500 V AC to ground
Switch point freely programmable, separately for switch-on and switch-off
point
Switching delay freely programmable from 0 to 100 s, separately for switch-
on and switch-off point
Number of switching cycles corresponds to the measuring cycle
Signal source
device variables
• Level linearized
•Distance
• Terminal voltage
• Electronic temperature
• Relative echo amplitude
• Diagnostic values, Advanced diagnostics
Number of switching cycles unlimited
Table 4.3

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Output
4.2 Signal on alarm
Depending on the interface, failure information is displayed as follows:
• Current output (for HART devices)
• Fail-safe mode selectable (in accordance with NAMUR Recommendation NE 43):
Minimum alarm: 3.6 mA
Maximum alarm (= factory setting): 22 mA
• Fail-safe mode with user-selectable value: 3.59 ... 22.5 mA
•Localdisplay
• Status signal (in accordance with NAMUR Recommendation NE 107)
• Plain text display
• Operating tool via digital communication (HART, PROFIBUS PA) or service interface (CDI)
• Status signal (in accordance with NAMUR Recommendation NE 107)
• Plain text display
4.3 Linearization
The linearization function of the device allows the conversion of the measured value into any
unit of length or volume. Linearization tables for calculating the volume in cylindrical tanks are
pre-programmed. Other tables of up to 32 value pairs can be entered manually or semi-
automatically.
4.4 Galvanic isolation
All circuits for the outputs are galvanically isolated from each other.

Pulscon LTC50
Output
2014-10
17
4.5 Protocol-specific data
HART
Wireless HART data
Manufacturer ID 17 (0x11)
Device type ID 0x34
HART specification 6.0
Device description files
(DTM, DD) Information and files under:
• www.pepperl-fuchs.com
• www.hartcomm.org
HART load Min. 250
HART device variables The measured values can be freely assigned to the device
variables.
Measured values for PV (primary variable)
• Level linearized
•Distance
• Electronic temperature
• Relative echo amplitude
Measured values for SV, TV, FV (second, third and fourth
variable)
• Level linearized
•Distance
• Terminal voltage
• Electronic temperature
• Absolute echo amplitude
• Relative echo amplitude
• Calculated DC
Supported functions •Burstmode
• Additional transmitter status
Table 4.4
Minimum start-up voltage 11.4 V
Start-up current 3.6 mA
Start-up time 15 s
Minimum operating voltage 11.4 V
Multidrop current 3.6 mA
Set-up time 1 s
Table 4.5

2014-10
18
Pulscon LTC50
Output
PROFIBUS PA
Manufacturer ID 93 (5D HEX)
Ident number 0E3B HEX
Profile version 3.02
GSD file Information and files under:
• www.pepperl-fuchs.com
•www.profibus.org
GSD file version
Output values Analog Input:
• Level linearized
•Distance
• Terminal voltage
• Electronic temperature
• Absolute echo amplitude
• Relative echo amplitude
• Calculated DC
Digital Input:
• Extended diagnostic blocks
• Status output PFS Block
Input values Analog Output:
• Analog value from PLC (for sensor block external
pressure and temperature)
• Analog value from PLC to be indicated on the display
Digital Output:
• Extended diagnostic block
• Level limiter
• Sensor block measurement on
• Sensor block save history on
• Status output
Supported functions • Identification & Maintenance
Simple device identification via control system and
nameplate
• Automatic Ident Number Adoption
GSD compatibility mode with respect to the previous
device
• Physical Layer Diagnostics
Installation check of the PROFIBUS segment via
terminal voltage and telegram monitoring
•PROFIBUSUp-/Download
Up to 10 times faster reading and writing of parameters
via PROFIBUS Up-/Download
•CondensedStatus
Simple and self-explanatory diagnostic information due
to categorization of diagnostic messages
Table 4.6

Pulscon LTC50
Power supply
2014-10
19
5 Power supply
5.1 Terminal assignment
2-wire: 4 ... 20 mA HART
Figure 5.1 Terminal assignment 2-wire; 4 ... 20 mA HART
1Active barrier with power supply (e. g. KCD2-STC-Ex1): observe terminal voltage
2HART communication resistor (250 ): observe maximum load
3Connection for optional field communicator
4Analog display device: observe maximum load
5Cable screen; observe cable specification
64 ... 20 mA HART (passive): terminals 1 and 2
7Terminal for potential equalization line
8Cable entry
+
–
4 ... 20 mA
5412
7
8
3
+
–
1
+
2
4...20mA
HART
10 mm
2- wire level
4-20 mA 4-20 mA
HART
[21]
open
-
6
~

2014-10
20
Pulscon LTC50
Power supply
2-wire: 4 ... 20mA HART, switch output
Figure 5.2 Terminal assignment 2-wire; 4 ... 20mA HART, switch output
1Active barrier with power supply (e. g. KCD2-STC-Ex1): observe terminal voltage
2HART communication resistor (250 ): observe maximum load
3Connection for optional field communicator
4Analog display device: observe maximum load
5Cable screen; observe cable specification
64 ... 20 mA HART (passive): terminals 1 and 2
7Switch output (open collector): terminals 3 and 4
8Terminal for potential equalization line
9Cable entry for 4 ... 20 mA HART line
10 Cable entry for switch output line
1
+
2
4...20 mA
HART
10 mm
2- wire
4-20 mA PFS
HART
[02/03]
open
-
1
+
2
-
3
+4
-
10
9
8
7
+
-
23 4
6
5
1
4 ... 20 mA
≥ 250 Ω
3+
4-
+
–