gefran KS Series User manual

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85194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
Manual of Electrical Installation for Pressure
Probes KS and KS-SIL2 series
Code 85194D
Edition 11/2021
Contents
1. General precautions pag 2
2. Transmitters with amplified analog output pag 2
2.1 Standard installation pag 2
2.2 Electrical connections series KS pag 3
3. Protection for outdoor installations of analog sensors pag 4
4. Technical specifications pag 5
5. Functional Safety (content according to IEC/EN 62061 paragraph 7) pag 6
5.1. Application pag 6
5.2. Restrictions of use pag 6
5.3.Maintenance and periodic inspections pag 7
5.4. Indication of response time pag 7
5.5. Indications and alarms pag 7
5.6. Failures and troubleshooting pag 8
This manual is related to KS Series pressure transducer, SIL2 certified according to the
standards IEC/EN62061
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285194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
1. General Precautions
The system must be used only in accordance with the required protection level.
The sensor must be protected against accidental knocks and used in accordance with the instrument’s ambient characteristics and per-
formance levels.
Sensors must be powered with non distributed networks.
For outdoor installations or with cables longer than 30 m*, proceed as indicated at paragraph 3.
(*) See further limitations for Safety applications at paragraph 5.
2. Transmitters with amplified analog output
Transducers: Serie KS SIL2
Outputs: 0.5...10.5V; 0.5...5.5V; 0.1...10.1V; 0.1...10.V; 1...5V; 1...6V; 1...10V; 0.2...10.2V; 4...20mA, ecc...
Installation remarks
- The transducer must be grounded (normally through the machine body or equipment it is installed on).
- Use a shielded cable only. The cable shield must be grounded on PLC side and left floating on machine side (on KS version with M12
electrical connector it’s possible to connect the shield on machine side by leaving floating the PLC side).
- To prevent interference, separate the power cables from the signal cables.
Machine
Press
Equipment
Transducer
Transducer
Ground
Cable shield floating
PLC / Instrument
Pressure port
Cable connector
Cable shield to ground
Shielded cable
Standard installation (recommended)

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85194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
Electrical connections
VOLTAGE AMPLFIED OUTPUT
CURRENT AMPLIFIED OUTPUT - mod. E
The interface with SRP/CS (Safety Related Part of a Control System) is made by mean of multipolar connectors showed
on pictures below, where the connections are specified in case of amplified voltage output (3 wire) or current output (2 wire
system, the sensor is connected in series with the current loop).
Ω
TOTAL LOAD RESISTANCE RL
Operating
Area
POWER SUPPLY VOLTAGE
RL = < (Vsupply - 10V) / 0.02A
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34
4 pin Male connector serie 713
Protection IP67
Z - 4 pole male
connector M12 x 1*
4 Pin DIN Type A
Protection IP65
E - EN 175301-803
4 pin MicroDIN Tipo C
Protection IP65
C – EN 175301-803
Interfaces with SRP/CS and voltage devices
F – 2/3 pole cable
Shield
White
Red
Black
Shielded cable 3x0,25 - 1 m
Protection IP65
LOAD DIAGRAM (Current output)
cod. C cod. Z cod. E cod. F
Red
Black
CONTROLLER SUPPLY
SIGNAL
cod. C cod. Z cod. E cod. F
CONTROLLER
AMPLIFIER
OUTPUT
SUPPLY
Red
Black
White
* IP67 with female homologated connector mounted, tightening torque 0.6Nm + low strenght threadlocker

485194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
3. Protection for outdoor installations of analog sensors
Pressure / Analog voltage output
CAL signals if any do not require protection
J1
J1
J1
J1
PLC side
+24Vdc
PLC side
+IN
Lato PLC
GND
PLC side
Ground
D4
D1 D2
D3
J2
J2
J2
Transducer side
+24Vdc
Transducer side
+OUT
Transducer side
GND
B72210-S-250-K01
B72210-S-250-K01
B72210-S-250-K01B72210-S-250-K01
PLC ground machine ground
1
1
1
1
1
1
1
Pressure / Analog current output
CAL signals if any do not require protection
J1
J1
J1
PLC side
+24Vdc
Lato PLC
+IN
Lato PLC
Terra
D1 D3
J2
J2
Transducer side
+24Vdc
Transducer side
+OUT
B72210-S-250-K01B72210-S-250-K01
PLC ground machine ground
1
1
1
1
1
D2
B72210-S-250-K01

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85194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
4. Technical specifications
Output signal Voltage Current
Accuracy (1) < ±0.5% FS
Pressure ranges (2) from 1 bar to 1000 bar (see table)
Resolution Infinite
Overpressure (without degrading performance) see table below
Pressure containment (burst test) see table below
Pressure Media Fluids compatible with Stainless Steel AISI 430F and 17-4 PH
Housing Stainless Steel AISI 304
Power supply 15...30Vdc 10...30Vdc
Dielectric strengh 250 Vdc
Zero output signal 0.1V; 0.5V; 1V (*) 4 mA (nominal)
Full scale output signal 5V; 5.5V; 10V; 10.1V; 10.5V (*) 20 mA (nominal)
Max allowed load 2 mA see load diagram
Long term stability < 0.2% FS/per year
Operating temperature range (process) -40...+125°C (-40...+257°F)
Operating temperature range (ambient) -40...+105°C (-40...+221°F)
Compensated temperature range -20...+85°C (-4...+185°F)
Storage temperature range -40...+125°C (-40...+257°F)
Temperature effects over compensated range (zero-span) ± 0.015% FS/°C typical (± 0.02% FS/°C max.)
Response time (10...90%FS) < 1 msec.
Warm-up time (3)< 30 sec.
Mounting position effects Negligible
Humidity Up to 100%RH non-condensing
Weight 80-120 gr. nominal
Mechanical shock 100g/11msec according to IEC 60068-2-27
Vibrations 20g max a 10...2000 Hz according to IEC 60068-2-6
Protections IP65/IP67 (M12 version) with female homologated connector
mounted, tightening torque 0.6Nm + low strenght threadlocker
Output short circuit and reverse polarity protection YES
CE Conformity EC Directive 2004/108/CE
Electromagnetic compatibility Emission EN61326-1/EN61326-2-3
Lifetime 10 years
(*) Other voltage values of Zero and Full Scale available on request.
NOTE: SIL2 certification is available from 0-4 bar range and above
FS = Full Scale Output
1Incl. Non-Linearity, Hysteresis, Repeatability, Zero-offset and Final-offset (acc. to IEC 61298-2)
2The operating pressure range is intended from 0.5% to 100% FS
3Time within which the rated performance is achieved
Range (bar) 1 1.6 2 2.5 4 6 10 16 20 25 40 60 100 160 200 250 400 600 1000
Overpressure
(Bar) 6 6 6 10 10 20 20 32 40 50 80 120 200 320 400 500 800 1200 1200
Burst pressure
(Bar) 9 9 9 15 15 30 40 64 80 100 160 240 400 640 800 1000 1500 1500 1500

685194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
5. Functional Safety (content according to IEC/EN 62061 paragraph 7)
5.1 Application
The pressure sensor KS performs the following safety function:
correct reading and transduction of pressure to individuate overpressure. Reading and transduction is considered cor-
rect when it is within the specifications declared in the datasheet and in the Operating Manual.
The SIL parameters of the transducer are shown in the table below:
Parameter Value Measuring Unit
Architecture 1oo1 --
HFT 0 --
bfactors Not relevant --
lDD
Current output 1,56E-08 1/h
Voltage output 1,56E-08 1/h
lDU
Current output 6,53E-08 1/h
Voltage output 6,62E-08 1/h
SFF
Current output 90,47 %
Voltage output 90,32 %
PFHD
Current output 6,53E-08 1/h
Voltage output 6,62E-08 1/h
SILCL 2 --
The diagram “A” (Fig. 1) shows a possible application: the sensor detects the pressure and transduces it in an analog
electrical signal proportional to the value of the measured value; the SRP / CS compares the signal with the one set as
the alarm threshold: in case of exceeding the threshold it shall disable the elements of pressure generation.
5.2 Restrictions of use
The device must only be used in accordance with these operating instructions for mechanical installation, electrical con-
nection, environmental conditions and use in order
to maintain the declared SIL. The sensors must be powered by non-distributed networks and in any case with a length
Fig. 1: application diagram A
VOLTAGE OUTPUT
CURRENT 2-WIRE OUTPUT

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85194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
of less than 30 m.
5.3 Maintenance and periodic inspections
Periodic maintenance to carry-out in order to guarantee the justified exclusion of failures are:
- Visual inspection of the status of the electrical and mechanical connections.
The maintenance is designed to evaluate possible problems due to situations of incorrect mounting endured over time
or particular aggressiveness of the material processed.
Frequency: every two years
Check obstruction of the channel under pressure
- The maintenance has the purpose to verify that there are no occlusion of the pressure channel, which would lead to
malfunctioning.
The inspection is visual, after removing the probe from the process seat.
Frequency: every year.
Testing the sensor calibration
- The test is intended to check the correctness of the transduction curve of the sensor. It’s done by applying known
pressure points to the transducer and checking the output values of the probe.
Frequency: every four years.
5.4 Indication of response time
The response time to the pressure transduction is equal to 1 ms
5.5 Indications and alarms
The KS Series pressure sensors in the case of some specific anomalies provide output saturation (positive HIGH or
negative LOW).
The table 1 indicates the detected failures, their effect on the electrical output, and the recovery mode of the device.
Table 1: failures, effects on the outputs
Failure Current output Voltage output
FS<= 6V FS > 6V
Power supply cable broken LOW < 3.8mA LOW < 0.05 V
Sensor not connected LOW < 3.8mA LOW < 0.05 V
Power supply broken LOW < 3.8mA LOW < 0.05 V
Broken bridge *LOW < 3.8mA *LOW < 0.05 V
*HIGH > 22mA *HIGH > 7 V *HIGH > 11.5 V

885194D_MAN_Electrical Installation for Probes_KS and KS-SIL2 Series_11-2021_ENG
Failure Current output Voltage output
(*) variable according to the type of failure
5.6 Failures and troubleshooting
In case of failures or malfunctions, on Table 2 you can find the most common failures and the means of appropriate search:
Table 2: troubleshooting
Failure Possible causes Means of research
The sensor does not feel pressure Obstruction of pressure
channel
Fault on electronics output
stage
1. Power down and remove the sensor
2. Verify eventual occlusion of the channel
under pressure. Clean any residues and
material caps
The sensor is in alarm mode type
“HIGH”
Bridge broken
Detachment of pins
Failure on primary element
1. Power down and remove the sensor
2. Check for overheating of electronics hou-
sing. Remove the causes of overheating, wait
until it cools down and power the sensor.
3. Powered the probe again, if the problem
persists, you should send back the probe to
Factory for repair.
The sensor is in alarm mode type
“LOW”
Power supply cable /connector
broken
Sensor not connected
Sensor not powered
Bridge broken
1. Power down and remove the sensor
2. Check that the power supply is connected.
If necessary, restore the power supply.
3. Check for continuity between the pins of
the connector and the power supply.
If necessary, replace the cable and the con-
nector.
4. Check if the power values are within the
specications indicated in this manual. If
necessary, replace the power supply.
5. If the problem persists, you should send
back the probe to Factory for repair.
The diagram “A” (Fig. 1) shows a possible application: the sensor detects the pressure and transduces it in an analog electrical signal
proportional to the value of the measured value; the SRP / CS compares the signal with the one set as the alarm threshold: in case of
exceeding the threshold it shall disable the elements of pressure generation.

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GEFRAN spa
via Sebina, 74
25050 PROVAGLIO D’ISEO (BS) - ITALIA
tel. [phone] - fax. [phone]
Internet: http://www.gefran.com