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Pneumatic Actuators
doppeltwirkend und einfachwirkend, 90° schwenkend, ISO Flansch 5211, einfachwirkend option: Federkraft öffnend(NO) Federkraft schließend(NC)
Electric Part-Turn Actuator
J4C Typen Standard, Stellungsregler, BSR Akkupack, Stellungsregler + Akkupack, Drehmoment 10Nm - 300Nm, Befestigung in Standard und auf Anfrage (9mm - 22mm), Spannung 24V - 230V - 240V
Valves
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IFM IN 5327 Inductive double sensor electronic for part-turn actuators
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710-1100
IFM Inductive double sensor IN5327 for rotary actuatorsCuboid housing, switching distance 4mm, non-flush mountable, electrical version PNP, operating voltage 10...36 V DC, current consumption 15mA (24V), output function 2x NO contact, plug connection 1x M12; contacts gold-plated, housing PBT, display: 2x LED, yellow (switching status), ambient temperature: -25°C...+80°C, protection class IP67
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€84.88
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IFM IFT206 Inductive sensor M12 10-36 DC Use in the food industry
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710-2060
Inductive sensor IFT 206 for pneumatic knife-gate valveSpecial feature Increased switching distance, Application Regular cleaning processes, IFB3004BBPKG/M/V4A/6M/WH, Metal thread M12x1, Switching distance 4mm; [b] flush mountable, Electrical version PNP, Output function: normally open, Operating voltage: 10-36 V DC, Ambient temperature 0°C to
100°C, Protection class: IP 68; IP 69K; ( COP ), Connection cable. UL approval
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€68.02
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IFM NN 5008 Inductive double sensor electronic for rotary actuators ATEX
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710-1103
IFM NAMUR Inductive double sensor NN5008 for rotary actuatorsConnection to certified intrinsically safe circuits (maximum values U=15V; I=50mA; P=120mW), ATEX marking: Ex ia, Electrical design: NAMUR, Output function: 2x NC contact
Switching distance: 4mm, cannot be installed flush, Housing: cuboid, Nominal voltage: 8.2V DC (1k?), Supply voltage: 7.5...15V DC, Current consumption: < 1mA; (blocking; conducting: > 2.1mA), Plug connection 1x M12, Housing: PBT Cover: PC Display: 2x LED, yellow (switching status), Ambient temperature: -20°C...+80°C, Protection class: IP67
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€69.70
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IFM IN 5334 Inductive double sensor Actuator connection electronic for quarter-turn actuators IP67
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710-1101
IFM IN5334 Dual sensor with actuator connectionHousing: rectangular, Switching distance: 4mm, Non-flush mount, Electrical version: PNP, Operating voltage: 10...36 V DC, current consumption: 20mA (36V), output function: 2x NO contacts, plug connection, Rd24x1/8, 6-pin + M12 plug connection 5-pin, mounting according to ISO 5211 (VDI/VDE 3845), material: PBT, PC display: 2x LED, yellow (switching status), ambient temperature: -25°C...+80°C, protection class: IP67
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€192.39
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IFM IN 5225 Inductive double sensor electronic for part-turn actuators
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710-1102
IFM Inductive double sensor IN5225 for rotary actuatorsHousing made of cuboid, switching distance 4mm, cannot be installed flush, 3-wire, DC PNP, operating voltage: 10...36 V DC, current consumption 15mA, output function: 2x NO contact, plug connection 1x M12; contacts: gold-plated, housing PBT, display: 2x LED, yellow (switching status), ambient temperature: -25°C...+80°C, protection class: IP67
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€78.47
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Frequently Asked Questions – Inductive Sensors for Part-Turn Actuators
An inductive sensor for part-turn actuators is a non-contact proximity switch that detects the end position of an automated valve (OPEN / CLOSED) without any mechanical contact and reports it as an electrical signal to the control system (PLC/DCS). The operating principle:
- Inductive effect: A coil inside the sensor head generates a high-frequency alternating electromagnetic field. When a metallic object (the cam disc on the actuator or a dedicated target flag) enters the sensing field, it damps the oscillating circuit – the sensor switches contactlessly to its active or inactive state
- Dual sensor: Most FERGO variants (IN5225, IN5327, IN5334, NN5008) are designed as dual sensors – two switching elements in one housing for simultaneous detection of both end positions (OPEN and CLOSED) with a single device
- Contactless operation: No mechanical contact between sensor and actuating element → no wear, no contact corrosion, no arcing; virtually unlimited switching life
- Self-cleaning: Since there are no moving parts in the sensing zone, dirt, dust, or liquid cannot settle on critical contact surfaces
- Output signal: Depending on model: PNP transistor output (10–36V DC, NO contact) or NAMUR current signal (7.5–15V DC, 2-wire, for Ex ia intrinsic safety)
FERGO stocks five IFM sensor models covering different mounting requirements, switching principles, and protection ratings:
IFM IN5225 – Inductive dual sensor, PNP, standard:
IFM IN5225 – Inductive dual sensor, PNP, standard:
- Housing: cuboid PBT; switching distance: 4mm, non-flush; electrical version: PNP, 3-wire; operating voltage: 10–36V DC; output: 2× NO; connector: 1× M12; protection: IP67; temperature: −25°C to +80°C; contacts: gold-plated
- Use: Standard part-turn actuators; 24V DC PLC systems; M12 fieldbus connector plants
- Identical core data to IN5225 (cuboid PBT, 4mm, PNP, 10–36V DC, 2× NO, M12, IP67, −25°C to +80°C, gold contacts, 2× yellow LED); current production model with LED status indicator; current consumption 15mA at 24V
- Use: Preferred standard choice for all new installations; ball valves, butterfly valves, plug valves with pneumatic or electric part-turn actuator
- Housing: cuboid PBT/PC; switching distance: 4mm, non-flush; PNP; 10–36V DC; current consumption: 20mA at 36V; 2× NO; connectors: Rd24×1/8, 6-pin + M12, 5-pin; mounting per ISO 5211 / VDI/VDE 3845; protection: IP67; temperature: −25°C to +80°C
- Use: Direct mounting to ISO 5211 hole pattern without adapter plate; plants with Rd24 device connector on actuator; 3-screw quick installation; preferred for new installations with an integrated ISO 5211 automation concept
- Housing: cuboid PBT/PC; switching distance: 4mm, non-flush; electrical version: NAMUR, 2-wire; nominal voltage: 8.2V DC (1kΩ); supply: 7.5–15V DC; output current: blocked <1mA, conducting >2.1mA; connector: 1× M12; protection: IP67; temperature: −20°C to +80°C
- ATEX: Ex ia; intrinsic safety limits: U=15V / I=50mA / P=120mW; Li=130μH; Ci=140nF; Category II 1G/2G + 1D; suitable for Zone 1, 2, 21, 22
- Use: All hazardous areas; ATEX Zone 1 gas and Zone 21 dust; evaluation via NAMUR Zener barrier or galvanic isolator; NAMUR-compatible PLC input evaluation
- Housing: threaded type M12×1, L=50mm, stainless steel thread; switching distance: 4mm, flush-mountable; PNP, NO; operating voltage: 10–36V DC; current consumption: 10mA at 24V; cable: 6m fixed; protection: IP68 + IP69K (COP-rated – Cleaning-Out-of-Place with high-pressure steam jet); temperature: 0°C to +100°C
- Characteristic: Increased sensing range; flush-mountable; designed for regular cleaning processes (CIP/COP)
- Use: Knife gate valves (linear stroke, one IFT206 per end position OPEN and CLOSED); food, beverage, and pharmaceutical plants with high-pressure cleaning; applications with heavy contamination and moisture; wherever IP67 of standard sensors is insufficient
Both solutions perform the same core function (electrical OPEN/CLOSED position feedback to the PLC), but differ in construction, mounting approach, and optimal use cases:
Inductive sensor (IFM IN5xxx / NN5xxx / IFT206):
Inductive sensor (IFM IN5xxx / NN5xxx / IFT206):
- Mounting: Directly on the actuator housing or ISO 5211 hole pattern; most compact solution; no separate housing with cam shaft required
- Actuating element: Cam disc on the actuator or dedicated target flag; contactless switching
- Wear: No mechanical wear; virtually unlimited service life with correct installation
- Visual indicator: LED status indicator on the sensor only (visible at short range); no large-format position display like the Switchmaster
- ATEX suitability: NN5008 for Zone 1/21 (Ex ia); IFT206 for non-ATEX areas with high-pressure cleaning
- Preferred for: Plants with a uniform inductive sensor concept throughout; IO-Link-capable PLC systems; high switching frequency; space-saving requirements; food/pharma (IFT206)
- Mounting: On NAMUR hole pattern of actuator; own housing with adjustable cam shaft (0–90°)
- Actuating element: Internal cam disc, mechanically adjustable → precise switching point setting possible in the installed state
- Visual indicator: Large-format, clearly visible red/green position display bar – readable from several metres; ideal for site walks and commissioning
- Switching principle: Mechanical (M2: microswitch, 4V–250V AC, change-over), inductive PNP (D2), or NAMUR (N2, ATEX)
- Preferred for: Requirement for a clearly visible position indicator; wide voltage range (mechanical up to 250V AC); change-over contacts (NO + NC in one device); straightforward field adjustment of switching points
PNP and NAMUR describe two fundamentally different output principles for inductive sensors:
PNP sensor (IN5225, IN5327, IN5334, IFT206):
PNP sensor (IN5225, IN5327, IN5334, IFT206):
- Output: Transistor output (PNP); in the active state, the sensor connects the positive supply rail to the output pin (normally open / NO)
- Voltage: 10–36V DC; typically 24V DC in PLC installations; output pin supplies up to 100–200mA directly into the PLC input terminal
- Connection: 3-wire (V+, output, GND); direct connection to PLC PNP digital input; no evaluation unit required
- ATEX: Standard PNP sensors are not intrinsically safe; they can be used in Zone 2/22 with a suitable Ex enclosure (Ex e, Ex d), but not in Zone 1/21 without an intrinsic safety concept
- When to use: All standard 24V DC PLC installations without ATEX Zone 1/21 requirement
- Output: 2-wire current signal per EN 60947-5-6; no transistor output; the sensor modulates its own quiescent current: undamped (no metal in field): >2.1mA (switch open) / damped (metal in field): <1mA (switch closed)
- Voltage: Nominal 8.2V DC; supply range 7.5–15V DC; from certified intrinsically safe circuit (Zener barrier or galvanic isolator)
- Connection: 2-wire; evaluation via NAMUR-compatible evaluation unit or PLC NAMUR input card; evaluation unit generates the 24V DC PLC-compatible digital signal
- ATEX: Ex ia – intrinsic safety; since all energy stored in the sensor (Li ≤130μH, Ci ≤140nF) and the maximum operating energy (U ≤15V, I ≤50mA, P ≤120mW) are well below the ignition limits for gas group IIC, the sensor can be used in Zone 1 and Zone 21
- When to use: All ATEX Zone 1 (gas) and Zone 21 (dust); plants with NAMUR signal circuits and Ex ia supply
The IFM IFT206 is a single inductive sensor in a stainless steel M12×1 threaded housing, specifically designed for applications with regular cleaning processes and extreme moisture exposure – and the preferred sensor for knife gate valves and slide gates in the FERGO range:
Technical features compared to the dual sensors (IN5xxx):
Technical features compared to the dual sensors (IN5xxx):
- Housing form: Threaded type M12×1, 50mm length (cylindrical, flush-mountable) – can be fully recessed into a bore so that no part protrudes above the mounting surface; significantly more resistant to mechanical damage than cuboid housings
- Flush-mountable: No lateral shielding of the sensing face required; more flexible installation in confined spaces
- Protection class IP68: Submersion-proof (pressure water resistance beyond the IP67 rating); the sensor withstands continuous immersion depth and pressurised water ingress
- Protection class IP69K: COP-rated (Cleaning Out of Place); the sensor withstands high-pressure steam jets up to approx. 80°C at 80 bar from 10–15cm distance – the most severe cleaning condition in food processing plants
- Temperature range 0°C to +100°C: Suitable for hot water and steam cleaning processes (the PBT housing variants of the IN5xxx dual sensors are limited to +80°C)
- Stainless steel M12×1 thread: Corrosion-resistant; EHEDG-compliant for food contact areas; cleaning-optimised surface
- Connection: 6m fixed cable (no connector – no additional leak point)
Mounting the FERGO inductive sensors varies in effort depending on the model:
IN5334 (actuator connection, ISO 5211 / VDI/VDE 3845 mounting) – fastest installation:
IN5334 (actuator connection, ISO 5211 / VDI/VDE 3845 mounting) – fastest installation:
- Direct mounting to the ISO 5211 / NAMUR hole pattern of the actuator with 3 screws; the Rd24×1/8 connector on the actuator accepts the 6-pin plug of the sensor; M12 connector for the PLC signal cable
- The target flags or cams on the actuator are mechanically fixed to the ISO 5211 mounting plate – no separate switching point adjustment required; end positions are determined by the actuator geometry
- Commissioning: Mount sensor → apply supply voltage → check LED status in OPEN and CLOSED end positions → complete
- Mounting via suitable bracket on the actuator or on the limit switch box mounting plate; sensing distance to actuating element (cam disc): 0–4mm (non-flush → no lateral metallic influence on the sensing field)
- Switching points are set by positioning the cam disc on the actuator; 2× yellow LED on the sensor shows active switching state – visual aid during adjustment without test equipment
- Screw into M12 threaded bore in the valve body or gate housing; flush-mountable → sensor face can be flush with the mounting surface; sensing distance 4mm to the actuating element (typically metal cam or gate plate)
- No connector – 6m cable directly on the sensor; secure against rotation when screwing in
Signal evaluation for FERGO inductive sensors depends on the output principle:
PNP sensors (IN5225, IN5327, IN5334, IFT206) – direct PLC wiring:
PNP sensors (IN5225, IN5327, IN5334, IFT206) – direct PLC wiring:
- Supply: 24V DC from PLC power supply or terminal supply (terminals: V+, GND, Output 1 NO, Output 2 NO for dual sensors)
- PLC input (PNP/source): Sensor switches 24V DC onto the input pin when the switching distance to the actuating element is reached (end position achieved) → PLC input = "1" / HIGH
- Typical PLC assignment:
- Output 1 → "valve OPEN confirmed" (when cam disc in OPEN end position actuates the sensor)
- Output 2 → "valve CLOSED confirmed" (when cam disc in CLOSED end position actuates the sensor)
- Stroke time monitoring: PLC starts timer with positioning command; if position confirmation does not arrive within the set stroke time → alarm "stroke monitoring" or stroke time fault
- Zener barrier or galvanic isolator (in the control cabinet outside the hazardous area) supplies the NAMUR sensor with 8V DC and evaluates the return current: conducting (>2.1mA) = not actuated; blocked (<1mA) = actuated (end position reached)
- Barrier/isolator output: 24V DC PNP or potential-free relay contact → direct connection to standard PLC digital input
- Additional function: NAMUR evaluation units detect cable break (current = 0mA) and short circuit (current >>3mA) as wire-break alarm / short-circuit alarm – higher diagnostic capability than PNP sensor
Yes – IFM inductive sensors can be integrated into the FERGO automation package as an alternative to the limit switch box (Switchmaster) and are factory-mounted and set on the actuator. The typical configuration:
- Process valve (butterfly valve, ball valve, knife gate valve etc.)
- Pneumatic part-turn actuator (DA or SA), ISO 5211 mounting
- NAMUR solenoid valve (3/2 or 5/2)
- Inductive sensor (IFM IN5334 direct to ISO 5211; or IN5327 on bracket; or NN5008 for ATEX installations)
- Switching points factory-set to the actuator geometry and documented
- Cable harness (sensor → M12 connector on actuator) pre-assembled; only the system cable needs to be plugged in on site
- For ATEX packages: NN5008 with ATEX documentation and Ex ia cables pre-assembled; matching Zener barriers available on request
- More space-saving than limit switch box solution: no additional housing on the actuator; ideal for confined installation situations