Siemens pointek CLS 100 User manual

Pointek CLS100
Pointek
Point level switches
Pointek CLS100
Compact Operating Instructions
7ML5501 (Pointek CLS100, SS Process connection)
7ML5610 (Pointek CLS100, Plastic version)
05/2021
A5E32
146158-AB
Introduction
1
Mounting
2
Connecting
3
Operation
4
Troubleshooting
5
Technical data
6
Dimensions
7
Notes for use in hazardous
locations
A
Product Documentation
and Technical Support
B

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E32146158
Ⓟ
05/2021 Subject to change
Copyright © Siemens AG 2020.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 3
Table of contents
1 Introduction ........................................................................................................................................... 5
2 Mounting ............................................................................................................................................... 6
2.1 Location .............................................................................................................................. 6
2.2 Installation features and restrictions..................................................................................... 6
3 Connecting ............................................................................................................................................ 8
3.1 Safety notes......................................................................................................................... 8
3.2 Cable version....................................................................................................................... 8
3.3 Enclosure version................................................................................................................. 9
3.4 Alarm output status ........................................................................................................... 10
3.5 Definitions......................................................................................................................... 10
3.6 Power/alarm wiring............................................................................................................ 11
3.7 Non-intrinsically-safe version ............................................................................................. 11
3.8 Intrinsically safe version only ............................................................................................. 13
3.9 Enclosure version and fully synthetic process ..................................................................... 14
3.10 Protection diodes............................................................................................................... 15
4 Operation............................................................................................................................................. 17
4.1 LED indicators.................................................................................................................... 17
4.2 Alarm output ..................................................................................................................... 17
5 Troubleshooting .................................................................................................................................. 20
5.1 Stainless steel process connection (integral cable).............................................................. 20
5.2 Fully synthetic process connection (enclosure)................................................................... 21
5.3 Maintenance ..................................................................................................................... 22
6 Technical data...................................................................................................................................... 23
6.1 Power................................................................................................................................ 23
6.2 Alarm output(s) ................................................................................................................. 24
6.3 Environmental ................................................................................................................... 25
6.4 Mechanical ........................................................................................................................ 26
6.5 Process conditions ............................................................................................................. 26
6.6 Approvals .......................................................................................................................... 27
7 Dimensions .......................................................................................................................................... 28
7.1 Dimensions........................................................................................................................ 28

Table of contents
Pointek CLS100
4Compact Operating Instructions, 05/2021, A5E32146158-AB
A Notes for use in hazardous locations .................................................................................................. 30
A.1 Safety guidelines ............................................................................................................... 30
A.2 Notes for use in hazardous locations .................................................................................. 30
A.3 Specific condition of use .................................................................................................... 31
A.4 Ambient and process temperature range, max. surface temperature and temperature
class .................................................................................................................................. 31
A.5 FM/CSA connection drawing .............................................................................................. 32
B Product Documentation and Technical Support.................................................................................. 33
B.1 Product documentation ..................................................................................................... 33
B.2 Technical support .............................................................................................................. 34
Index.................................................................................................................................................... 35

Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 5
Introduction
1
Pointek CLS100 is a compact 2-wire capacitance switch for level detection in constricted
spaces, interfaces, solids, liquids, slurries, and foam. The stainless steel process connection
versions (7ML5501) have an effective process temperature range of -30 to +100 °C (-22 to
+212 °F) and the synthetic process connection version (7ML5610) has an effective process
temperature range of -10 to +100 °C (+14 to +212 °F).
Note
•
Use Pointek CLS100 only in the manner outlined in this instruction manual.
•
For applications in areas classified as Hazardous, observe any restrictions according to the
relevant certificate.
Pointek CLS100 versions:
•Integral cable version with stainless steel process connection and probe options of PPS or
PVDF.
•Enclosure version (thermoplastic polyester enclosure) with stainless steel process
connection in combination with a PPS or PVDF probe.
•Enclosure version (thermoplastic polyester enclosure) with fully synthetic process
connection combined with a PPS probe.
Features
•NPT, R (BSPT), G (BSPP) process connections.
•Corrosion resistant construction, PPS, and 316L stainless steel (optional PVDF wetted
parts).
•Non-polarized, solid-state switch or relay output (enclosure version with fully synthetic
process connection only)
Applications
•Liquids, slurries, powders, granules, and solids
•Foods and pharmaceuticals
•Chemical and petrochemical
•Hazardous areas

Pointek CLS100
6Compact Operating Instructions, 05/2021, A5E32146158-AB
Mounting
2
2.1 Location
Note
•
Installation shall only be performed by qualified personnel and in accordance with local
governing regulations.
•
This product is susceptible to electrostatic shock. Follow proper grounding procedures.
•
When using multiple units, sensors must be 100 mm apart. Mount diagonally if vertical
space is restricted.
Pointek CLS100 is normally mounted into the vessel top (high detection alarm) or through
the tank wall at the detection level (high or low detection alarm).
Vertical
Angle
Horizontal
2.2 Installation features and restrictions
Note
Mounting diagrams apply to all versions.

Mounting
2.2 Installation features and restrictions
Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 7
Standpipes
Wall Restriction
Process Cautions:
•Keep out of path of falling material.
•Consider material surface configuration when installing unit.
•Protect probe from falling material.
•Avoid areas where material buildup occurs.

Pointek CLS100
8Compact Operating Instructions, 05/2021, A5E32146158-AB
Connecting
3
3.1 Safety notes
Intrinsically safe supply
For intrinsically safe models, power must be supplied from an Intrinsically Safe power source,
otherwise protection is no longer guaranteed.
Process pressure
The device construction allows process over-pressure up to 10 bar (146 psi). This pressure is
allowed for test purposes. The definition of the Ex approvals are only valid for a container-
over-pressure between -0.2...+0.1 bar (-2.9 ...+1.45 psi). For higher or lower pressures, the
approvals are not valid.
Chemical resistance against the medium
If the equipment is likely to come into contact with aggressive substances, then it is the
responsibility of the user to take suitable precautions that prevent it from being adversely
affected, thus ensuring the type of protection is not compromised. Aggressive substances,
e.g. acidic liquids or gases that may attack metals, or solvents that may affect polymeric
materials.
3.2 Cable version
①
Ground
②
White
③
Red
④
Black

Connecting
3.3 Enclosure version
Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 9
Symbols
Solid state switch, normally open unpowered.
V supply / mA 2-wire current loop detection 4/20 or 20/4 mA
3.3 Enclosure version
Terminal Operation
Cable Equivalent
①
Ground
②
mA current loop (+V or -V)
Red wire
③
mA current loop (-V or +V)
Black wire
④
cable shield connection
Cable shield
⑤
solid state switch/relay
*
White wire
* relay available only on Pointek CLS100 fully synthetic enclosure version
Note
The mA current loop can be wired in either polarity to determine high or low level operation
as shown in the examples beginning on
Non-intrinsically-safe version (Page 11). The cable
shield should be connected to terminal 3 on the terminal block along with the provided
ground wire.

Connecting
3.4 Alarm output status
Pointek CLS100
10 Compact Operating Instructions, 05/2021, A5E32146158-AB
3.4 Alarm output status
Alarm Status Covered
Yellow LED ON
Uncovered
Yellow LED OFF
Power Connection
high
(fail-safe)
red LED OFF
4 mA
SSS
1)
= open
red LED ON
20 mA
SSS = closed
black wire + V
high
(non fail-safe)
red LED ON
20 mA
SSS = closed
red LED OFF
4 mA
SSS = open
red wire + V
low
(fail-safe)
red LED ON
20 mA
SSS = closed
red LED OFF
4 mA
SSS = open
red wire + V
low
(non fail-safe)
red LED OFF
4 mA
SSS = open
red LED ON
20 mA
SSS = closed
black wire + V
1) Solid State Switch (SSS)
3.5 Definitions
The alarm conditions below can be detected in a fail-safe or non fail-safe mode.
Fail Safe
•The sensor connection arrangement is fail-safe if the output status is in high alarm status
when power fails; open contact state prevents material overflow.
•The sensor connection arrangement switches to the fail-safe low alarm status when
power fails; this open contact state prevents material running dry.
High Alarm
When material reaches a maximum process level, covering the probe.
Low Alarm
When material reaches a minimum process level, uncovering the probe.

Connecting
3.6 Power/alarm wiring
Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 11
3.6 Power/alarm wiring
Note
•
For terminal block equivalents, see Enclosure version (Page 9).
•
The solid-state output should only be used in circuits where the current is limited by a
proper load.
•
Due to the limited switching capabilities of the solid-state switch component, an auxiliary
relay must be applied when switching high-current/high-voltage apparatus.
CAUTION
Electrical isolation
The DC input terminal shall be supplied from a source providing electrical isolation between
the input and output, in order to meet the applicable safety requirements of IEC 61010-1.
CAUTION
Electrostatic charge
Parts of the enclosure are non-conducting and may generate an ignition-capable level of
electrostatic charge under certain extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be subjected to external conditions
which might cause a build up of electrostatic charge on non-conducting surfaces.
Additionally, cleaning of the equipment should be done only with a damp cloth.
3.7 Non-intrinsically-safe version
Low Alarm
①
White
②
Black
③
Red
For more information, go to Enclosure version (Page 9).
5 and 4 are connected to Solid state switch output
2 and 1 are connected to 12-33 V DC (polarity determines operation)

Connecting
3.7 Non-intrinsically-safe version
Pointek CLS100
12 Compact Operating Instructions, 05/2021, A5E32146158-AB
High Alarm
For more information, go to Enclosure version (Page 9).
5 and 4 are connected to Solid state switch output
2 and 1 are connected to 12-33 V DC (polarity determines operation)
4/20 mA Loop Alarm Application
Fully Synthetic Process Connection (Enclosure Version)
Rmax = (Vsupply - 12 V)/20 mA
For example, 250 Ωgives 1 or 5 V DC switch voltage to PLC.
Stainless Steel Process Connection (Integral Cable or Enclosure Version)
Rmax = (Vsupply - 12 V)/20 mA
For example, 250 Ωgives 1 or 5 V DC switch voltage to PLC.
Intrinsically Safe Version only
Solid State Switch Application

Connecting
3.8 Intrinsically safe version only
Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 13
5 and 4 are connected to Solid state switch output
2 and 1 are connected to V supply 10-30 V DC
3.8 Intrinsically safe version only
Operation with solid state switch/relay
•For intrinsically safe operation, an intrinsic safety barrier is required. Ratings Ui, Ii, Pi, CiLiof power
supply and solid state switch
•Shield is internally connected to the ground. It is recommended to use a shielded cable for stable
measurement.
red/black
white/white
Supply:
12 - 30V DC
10 - 30V DC intrinsically safe
Polarity determines output logic
Output:
Solid state switch
Observe protection
Max. 30V DC/30V AC 82 mA
Limited to 30 V DC/16 V AC,
82 mA in wet locations
Operation with 4/20 mA loop
•For intrinsically safe operation, an intrinsic safety barrier is required. Ratings UiIiPiCi Li of power
supply
•Rmax=(Vsupply - 12 V)/20 mA. Example: 24 V supply allows Rmax of 600 Ohms

Connecting
3.9 Enclosure version and fully synthetic process
Pointek CLS100
14 Compact Operating Instructions, 05/2021, A5E32146158-AB
Shield is internally connected to ground. It is recommended to use a shielded cable for stable
measurement.
Supply:
12 - 33V DC
10 - 30V DC intrinsically safe
Polarity determines output logic.
3.9 Enclosure version and fully synthetic process
Terminal Operation
Cable equivalent
①
Ground
②
mA current loop (+V or -V)
red wire
③
mA current loop (-V or +V)
black wire
④
cable shield connection
cable shield
⑤
relay/solid state switch
white wire
Operation with solid state switch/relay
•Terminal 3 is internally connected to ground. It is recommended to use a shielded cable for stable
measurement.
•For intrinsically safe operation an intrinsically safe barrier is required. Ratings UiIiPiCi Li

Connecting
3.10 Protection diodes
Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 15
Terminal 1, 2 - supply
Terminal 3
Terminal 4, 5 - output
12 - 33 V DC
10 - 30 V DC intrinsically safe
•cable shield
connection
•connect to
ground
Solid state switch:
Present with stainless steel process onnection.
Observe protection
Max. 30 V DC / 30 V AC; limited to 30 V DC / 16
V AC, 82 mA in wet locations
Relay:
Present with PPS process connection. Intrinsic
safety operation not available.
Max. 60 V DC or 30 V AC; limited to 30 V DC / 16
V AC in wet locations.
Max. 1 A 60 W
Operation with 4/20 mA loop
•Terminal 3 is internally connected to ground. It is recommended to use a shielded cable for
stable measurement.
•For intrinsically safe operation an intrinsically safe barrier is required. Ratings UiIiPiCiLiof
power supply
Supply
12 - 33V DC
10 - 30V DC intrinsically safe
Rmax = (Vsupply - 12 V)/20 mA
Example: 24 V supply allows Rmax of 600 Ohms
3.10 Protection diodes
Always use a protection diode when driving an external relay with the solid state switch or
relay contact. This prevents possible switch damage due to inductive spikes generated by the
relay coil.
Orient the diode based on the current flow.

Connecting
3.10 Protection diodes
Pointek CLS100
16 Compact Operating Instructions, 05/2021, A5E32146158-AB
DC circuit with Protection Diode
Note
For integral cable equivalents, refer to Enclosure version (Page 9).
CLS100 controlling the high side of the external relay (output acts like PNP transistor
switch)
CLS100 controlling the low side of the external relay (output acts like NPN transistor
switch)

Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 17
Operation
4
4.1 LED indicators
Yellow = sensor
status •ON indicates contact with the process material (material capacitance is greater
than the set point).
•OFF indicates when the sensor is out of contact with the process material (ma-
terial capacitance is less than the set point).
Red = output
status
ON indicates the mA loop alarm and solid state switch contact status. Refer to
Alarm output status (Page 10).
Green = power
ON indicates the CLS100 is properly powered.
4.2 Alarm output
Setpoint adjustment
①
20-turn trimpot
As a guide to adjusting the alarm set point for reliable and accurate detection of the process
material, we have classified the materials and applications into three cases.
Follow the setup procedure associated with the case outline describing your application.
Note that the sensitivity of the unit can be adjusted by the user as required.
Case 1: General applications
Characteristics
•dry solids
•low viscosity liquids

Operation
4.2 Alarm output
Pointek CLS100
18 Compact Operating Instructions, 05/2021, A5E32146158-AB
Preparation
•Ensure that the green LED is ON.
•If yellow LED is ON, turn the trimpot CCW (counter clockwise) until the yellow LED goes
OFF, otherwise go to step 1 below.
Configuration
1. With sensor uncovered and a minimum 50 mm free space all around, turn the trimpot CW
(clockwise) until the yellow LED just goes ON.
2. Turn the trimpot CCW until the yellow LED just goes OFF.
Case 2: Demanding applications
Characteristics
•hygroscopic / wet solids
•high viscosity and high conductivity liquids
Preparation
•Ensure that the green LED is ON.
•Turn the trimpot CCW (counter clockwise), until the yellow LED goes OFF.
Configuration
1. Adjust the material level of the process so that the sensor is immersed. The yellow LED
should be ON.
2. Adjust the material level of the process so that the sensor is uncovered, but retains
significant (as much as possible) material buildup on sensor.
3. Adjust the trimpot CCW until yellow LED goes OFF. To get the true feel for the correct
position, please adjust the trimpot CW then CCW several times to ensure that the yellow LED
is OFF. (This adjustment is sensitive, and we recommend this practice exercise so you can
fine tune the trimpot movement until the yellow LED L1 turns OFF with minimal
adjustment.)
Case 3: Interface detection
Characteristics
•liquid A / liquid B, foam / liquid
Preparation
•Ensure that the green LED is ON.
•Turn the trimpot CCW (counter clockwise), until the yellow LED goes OFF.

Operation
4.2 Alarm output
Pointek CLS100
Compact Operating Instructions, 05/2021, A5E32146158-AB 19
Configuration
1. Immerse the sensor in the material that has the lowest dielectric constant. The yellow LED
should be ON.
2. Adjust the trimpot CCW until the yellow LED goes OFF.
3. Immerse the sensor in the material that has the highest dielectric constant; the yellow LED
should come ON.
Note
In areas with high levels of EMI, the sensitivity potentiometer should be turned back two
turns counter
-
clockwise after the setpoint is adjusted. After completing the setup, replace the
trimpot cap on the cable version, or the lid on the enclosure version.
The unit is now in
service, providing level detection of your process.

Pointek CLS100
20 Compact Operating Instructions, 05/2021, A5E32146158-AB
Troubleshooting
5
5.1 Stainless steel process connection (integral cable)
Symptom
Cause
Action
Green LED off
Proper power not applied to
device.
Power range must equal 12 to
33 V DC at all times (10 to 30 V
DC for IS versions).
Check power source.
Minimum 12 V DC on the termi-
nals when the signal current is
20 mA (minimum 10 V DC for IS
versions)
Green LED off, with proper sup-
ply
Defective component in device.
Contact distributor
Green LED on and Yellow LED on
while not responding to product
and/or adjustment.
Proper power not applied to
device.
Power range must equal 12 to
33 V DC at all times (10 to 30 V
DC for IS versions).
Check power source.
Minimum 12 V DC on the termi-
nals when the signal current is
20 mA (minimum 10 V DC for IS
versions)
Hysteresis region too great.
Proper power not applied to
device.
Power range must equal 12 to
33 V DC at all times (10 to 30 V
DC for IS versions).
Check power source.
Minimum 12 V DC on the termi-
nals when the signal current is
20 mA (minimum 10 V DC for IS
versions)
Unequal current in red and black
wire.
Loop circuitry is DC biased w.r.t.
ground.
Black wire exceeds + 36 V DC
against Ground.
Correct loop circuitry.
Remove cause of voltage on the
red wire and/or bias.
Yellow LED won't come on or
off.
Defective component in device.
Contact distributor
Too much current in loop
Supply voltage too high
Ensure power range equals 12
to 33 V DC at all times (10 to 30
V DC for IS versions).
Red LED lights opposite to the
Yellow LED when this is not
meant to happen.
Incorrect polarity on red and
black loop terminals.
Reverse polarity on loop termi-
nals.
Red and Yellow LEDs are blink-
ing fast.
Proper power not applied to
device.
Power range must equal 12 to
33 V DC at all times (10 to 30 V
DC for IS versions).
Check power source.
Minimum 12 V DC on the termi-
nals when the signal current is
20 mA (minimum 10 V DC for IS
versions)
Red and Yellow LEDs are blink-
ing while switching. Proper power not applied to device.
Power range must equal 12 to
33 V DC at all times (10 to 30 V
DC for IS versions).
Check power source.
Minimum 12 V DC on the termi-
nals when the signal current is
20 mA (minimum 10 V DC for IS
versions)
Solid state contact does not
follow status Red LED.
Defective component in device.
Probable cause: wrong wiring in
this circuit.
Contact distributor
Yellow LED is lit while probe is
not covered.
May indicate significant product
buildup.
Rotate sensitivity potentiometer
further CCW (counter clockwise)
Check sensor tip.