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Absolute Encoders for Feedback for CNC/PLC: SHG-A2 Linear Encoder

 

SHG-A2 Linear Encoder

SHG-A2 Incremental Linear EncoderRS232 serial communication is typically used to interface with PC "COM" ports. A serial to USB converter is available to allow interface via a USB port. Developed to meet a wide range of feedback applications, the SHG-A2 absolute linear encoder provides a true absolute position immediately upon power-up. The encoder does not use batteries or static memory to retain the positional data. True position can be reacquired once power is applied, regardless of duration or power-off movements.

Click here to learn more about Newall's Inductive Encoder Technology

Download SHG-A2 Linear Encoder Documents: SHG-A2 Protocol (pdf)
SHG-A_ Installation Manual (pdf)
Dimensional Drawing <100" travel (2540mm) (pdf)
Dimensional Drawing ≥100" travel (2540mm) (pdf)
Newall Linear Encoder Catalog (pdf)

 

 Specifications

 

Output Signal RS232
Accuracy/Meter
±0.0004", ±0.0002", ±0.0001"(±10µm, ±5µm, ±3µm)
Resolutions
10µm, 5µm, 1µm or 0.5µm
Scale Travels
4" to 137.8" (102mm to 3.5m)
Scale Diameter
0.601" (15.25mm)
Reader Head Dimensions
2.05"H x 5.16"L x 1.10"D (52mm x 131mm x 28mm)
Reference Marker
n/a
Maximum Traverse Rate
n/a
Power Supply
5VDC ±5%, <350mA
Shock (11ms)
100g (IEC 69-2-6)
Vibration (55-2000Hz)
30g (IEC 68-2-27)
Sample Period
50µs
Environmental Rating
IP67, fully submersible (IEC 529) - Exceeds NEMA 6
Operating Temperature
32° to 131°F (0° to 55°C)
Coefficient of Expansion
12 x 10-6K
Scale Material
316 stainless steel
Overall Scale Length
Scale travel length + 10.2" (258mm)
Standard Cable
15 core, 11.5' (3.5m) armored
Maximum Cable Length
65.6' (20m)
Standard Connector
15 pin "D" type
EMC Compliance
BS EN 61000-6-2 and BS EN 61000-6-4

 

 Options
Resolutions
Custom resolutions available
Non-Armored Cable
PUR (polyurethane)
Connectors
IP67 (NEMA 6)
• None (flying lead)
Cable Lengths
22' (7m) or 19.68" (0.5m)

Quick and Easy Installation
The design of these linear encoders allow installment in almost any position, unlike glass-scale linear encoders, which usually need to be installed with the lip seal facing downwards to prevent contamination. Self-aligning fixing brackets allow virtually effortless scale mounting, needing only a single hole for each set of brackets.



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