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FAGOR grid reading head | SX/SX-A/SP/SP-A/LAF50-ASpanish enclosed grating ruler reading headUsed as a positioning, measurement, and feedback device for milling machines, boring machines, lathes, CNC machine tools, and automation equipment. Provide specifications, models, prices, fault detection and maintenance, parts supply, and technical solutions for SX, SX-A, SP, SP-A, LAF50-A grid reading heads.
FAGOR grid reading head | SX/SX-A/SP/SP-A/LAF50-ATechnical parameters and physical images of the Spanish enclosed grating ruler reading head:
FAGOR SX Reading HeadIt is a type of grating ruler system mainly used for high-precision displacement measurement. The following are technical parameters:

Model identificationSX (often mentioned alongside variants such as SOX and SSX)
typeOpen grating ruler reading head, suitable for linear or circular grating systems
Place of Origin: Spain
The technical parameters of SX series combined with FAGOR series (such as FX, LX, GX, etc.) are as follows:
measurement methodIncremental or ABS (depending on specific sub model)
resolution: 0.1 µm、0.5 µm、1 µm、5 µm(depending on configuration)
output signal: TTL differentialOr1 Vpp sine signal
measure speed: reachable240 m/min or higher(Depending on resolution)
output frequency: Gundam2.5 MHz(In low resolution mode)
Reference point marker (I0): One pulse every 50 mm (incremental)
power supply voltage:5 V ±5%No load current<150 mA
Operating Temperature:0 ° C to 50 ° C
Protection level:IP40
precision:±10 µm/m(When used in conjunction with steel strips or glass gratings)
SX reading head is often used in conjunction withSX series grating rulerUsed in conjunction with steel strips or glass rulers
Supports multiple cable models, such asEC-3A-C5、EC-3B-C9、EC-3PA-FNWait, wait
Can be withFAGOR Digital Display System(such as 10i, 20i, 30i, 40i series) Compatible
SX series has no unified standard parametersThe specific values need to be confirmed based on the sub models (such as SX-370, SX-520, etc.)
This type of reading head is used in grating ruler systems in CNC machine tools and measuring equipment, and belongs to displacement sensor components.
Applicable grating ruler seriesFAGOR grating ruler reading head series, equivalent to LP, LX, FX, GX, GP, CX.
function:
Read the displacement signal of the grating ruler (steel strip or glass).
Output incremental (such as TTL differential) or absolute signals.
Use blue sealed dust-proof rubber strips to enhance protection.
Supporting cable modelEC-3A-C5, EC-5A-C1, CX-1025, etc., support working voltage of 2.5V-110V, with shielding protection.
Technical parameter reference (based on the commonality of FAGOR series):
resolutionUp to 0.1 µ m-5 µ m (depending on the specific model).
measure speedUp to 480 m/min in height.
output signalUsually TTL or 1 Vpp differential signal.
Protection levelUsually IP40.
Operating Temperature: 0 ° C to 50 ° C.
FAGOR grating ruler systemExists inSX series reading head, commonly used for high-precision displacement measurement, suitable for linear grating rulers and circular grating encoders.
SX series reading headTechnical features include:
Output signal typeTypically, it is a differential square wave (such as TTL or HTL) or sine/cosine analog signal.
resolution: reachable0.1 µm 至 1 µm(depending on the matching grating ruler and interpolation factor).
Response frequency: General support>100 kHz(Corresponding to high-speed motion scenarios).
Working temperature range: About0 ° C to 70 ° C.
Protection levelMost of them areIP50 or IP64(depending on the specific model).
interface method: Commonly seen asD-sub 9-pin or M12 aviation plug.
⚠️ Note: Some of the materials mentionedLAS-A Reading HeadUsed in conjunction with FAGOR grating ruler
SX-ABelonging toFAGOR grating ruler reading head seriesA sub model commonly found in open or closed linear grating systems.
In the FAGOR product line, "SX" usually refers toOpen type linear grating reading headThe suffix '- A' may indicate a version with an air inlet or a specific interface.

FAGOR SP Reading HeadMainly used forIncremental Linear Grating Ruler SystemCommonly found in high-precision CNC machine tools and measuring equipment. The following are its main technical parameters:
measurement method: Incremental
Signal type:
Differential TTL (supports multiple resolutions)
Or 1 Vpp sine signal
resolution:0.1 µm 至 5 µm(depending on the model and configuration)
Fence spacing:20 µm(Steel strip engraving)
output frequency: Gundam2.5 MHz(Similar to L2RW1 model and SP series)
measure speed:240 m/min(Speed will decrease at high resolution)
Reference point marker (I0): Every50 mmOne pulse (some models can be selected through magnetic plates)
power supply voltage:5 V ±5%(Some models support ± 10%)
no-load current:< 150 mA
cable length: Support1 meter or 3 meters, optional with plug configuration
Protection level:IP 40
Applicable grating ruler types: MatchingS SeriesGrating ruler (such as SP-220-5, SP-320-5, etc.)

SP (Basic Model)
SP-A (possibly an enhanced or compatible version)
SP-220-5, SP-320-5, etc. (including travel and interface information)
CNC machine tools (milling machines, lathes, machining centers)
High precision measuring equipment
Compatible with mainstream CNC systems such as Fagor, Fanuc, Mitsubishi, Siemens, etc
Note: Different SP models (such as SP, SP-A, SP-220-5) may have differences in resolution, cable interfaces, compatibility protocols, and other aspects.
resolution: reachable0.1 μm(Some models support higher)
Signal type: Commonly seen as1 Vpp sine wave outputOrDifferential TTL
Installation method: Mostly fornon-contact, with LED installation instructions
Applicable grating: Often pairedStainless steel strip rulerOr glass grating ruler, with a range of up to3020 mm
SP SeriesIt is an important product line of FAGOR grating ruler reading heads, commonly used forOpen or closed linear grating systemSuitable for high-precision displacement measurement scenarios.
In the FAGOR product naming system, the suffix "A" usually indicatesABS measurement(Absolute) orWith air inletWaiting for specific configurations.
SP series reading heads are commonly used inSP、SPX、SPCEquivalent sub model
Applicable grating ruler seriesS series grating ruler (such as SX, SY, SW, SP, etc.)
Output signal typeTTL differential incremental signal (commonly used in Fagor grating systems)
Fence spacingUsually:20 μmOr4 μm(depending on the specific model)
resolution: reachable0.01 μm(In conjunction with high subdivision drivers)
Response frequency:250 KHz(Corresponding to a grid spacing of 4 μ m)
Reference mark (Index)Every 50 mm, triggered by magnetic plates
power supply voltage:DC 5 V ± 5%, current consumption< 175 mA
speed:60 m/min
Protection levelOpen structure, it is recommended to install a protective cover to prevent dust
Compatibility of communication protocolsSupport mainstream CNC protocols such as SSI, BiSS, Mitsubishi, Yaskawa, etc. (configured according to specific models)
FAGOR LAF50-A Reading HeadBelonging to its ABSLinear grating ruler systemOne of the models. The following are technical parameters:

L: Long range series
AAbsolute grating
FThe communication protocol type isSSI(Fa Ge Standard Protocol)
50The resolution is50 nm
-A: Reading headWith air inlet(Used for dust prevention or positive pressure protection)
measurement methodABS (position known upon power on, no need to return to reference point)
resolution:50 nm
signal output:SSI(Synchronous Serial Interface)Serial Communication Protocol
protective structureClosed aluminum alloy shell with built-in sealing strip, suitable for industrial environments such as oil stains, chips, dust, etc
Applicable scenariosHigh precision CNC machine tools, coordinate measuring machines, semiconductor equipment, and other applications that require high positioning accuracy
The LAF series is typically used forUltra long travel measurement(LAF10 model supports up to 60 meters)
The suffix '- A' clearly indicates that the reading head hasAir intake designCan connect compressed air to achieve internal positive pressure dust prevention
This model belongs toClosed grating rulerCompared with open type (such as L2RX-3D), it focuses more on anti pollution ability rather than high-speed response
Model analysisFAGOR grating ruler reading head models usually include information such as series, resolution, reference point spacing, cable length, interface type, etc. For example:
LAF "may representLinear Absolute Fine(Linear ABS high-precision) series;
'50' may refer toThe reference point interval is 50 mm;
'A' representsAbsolute
Model parameters:
Measurement type:ABS(Because the model includes "A");
resolution: For0.1 µm、0.5 µm 或 1 µm(FAGOR (ABS) supports up to 0.1 µ m);
Reference point interval:50 mm;
output signal:Differential TTLOr1 Vpp sine wave;
Communication Protocol (Absolute): SupportSSI、Fanuc、Siemens SL、FeeDatWait, wait;
structural form:Closed aluminum alloy shell, with protective sealing strip;
accuracy class: For± 3 µ m or ± 5 µ m;
Applicable EnvironmentDustproof, oil proof, and cutting fluid splash proof, suitable for industrial scenarios such as CNC machine tools.