PRODUCT SPOTLIGHT
Replace Broken Glass Scales with DSG/DMG

Replace Broken Glass Scales with DSG/DMG

Many shops will be will more willing to replace a single defective scale on an existing DRO vs. replacing the entire system, if that will get them up and running. Newall's DSG and DMG ...


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OEM Metlsaw Finds Solution To Downtime Due To Linear Encoder Field Failures

OEM Metlsaw Finds Solution To Downtime Due To Linear Encoder Field  Failures

Metlsaw Systems Inc., Benicia, CA, is a manufacturer of plate, cut off, extrusion, cold and combination saws for industrial metalworking and plastics production applications. Spanning a multitude of...


Absolute Encoders for Feedback for CNC/PLC: SHG-A4 Linear Encoder

SHG-A4 Linear Encoder

SHG-A4 Incremental Linear EncoderRS485 meets the requirement of a multi-point communication network, which can have up to 32 drivers and 32 receivers on a single two-wire bus. A key feature is the ability to address individual devices. This model can be ordered with unique address tags. Developed to meet a wide range of feedback applications, the SHG-A4 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-A4 Linear Encoder Documents: SHG-A4 Protocol (pdf)
SHG-A_ Installation Manual (pdf)
Dimensional Drawing (<100" travel) (pdf)
Dimensional Drawing (≥100" travel) (pdf)
Newall Linear Encoder Catalog (pdf)

 

 Specifications
Output Signal RS485
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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