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SHG-AB, SHG-AG and SHG-AS Linear Encoder
SSI (Synchronous Serial Interface) is a patented absolute encoder protocol invented by Max Stegmann GmbH. The transfer of position data is much faster than RS232 or RS485, making this protocol ideal for closed loop motion control. There are several variations of SSI currently available. Developed to meet a wide range of feedback applications, these absolute linear encoders provide 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-AB, SHG-AG, SHG-AS Linear Encoders Documents: SHG-A_ Installation Manual (pdf)SHG-AS Protocol (pdf)
SHG-AB and SHG-AG Protocol (pdf)
Dimensional Drawing (<100" travel) (pdf)
Dimensional Drawing (≥100" travel) (pdf)
Newall Linear Encoder Catalog (Newall Linear Encoder Catalog)
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Specifications
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SHG-AB = SSI Binary - 24 data bits, no parity SHG-AG = SSI Gray Code - 24 data bits, no parity SHG-AS = SSI Gray Code - 24 data bits, even parity |
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Accuracy/Meter
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±0.0004", ±0.0002", ±0.0001"(±10µm, ±5µm, ±3µm)
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Resolutions
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10µm, 5µm, 1µm or 0.5µm
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Scale Travels
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4" to 137.8" (102mm to 3.5m)
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Scale Diameter
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0.601" (15.25mm)
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Reader Head Dimensions
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2.05"H x 5.16"L x 1.10"D (52mm x 131mm x 28mm)
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Reference Marker
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n/a
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Maximum Traverse Rate
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n/a
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Power Supply
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5VDC ±5%, <350mA
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Shock (11ms)
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100g (IEC 69-2-6)
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Vibration (55-2000Hz)
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30g (IEC 68-2-27)
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Sample Period
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50µs
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Environmental Rating
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IP67, fully submersible (IEC 529) - Exceeds NEMA 6
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Operating Temperature
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32° to 131°F (0° to 55°C)
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Coefficient of Expansion
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12 x 10-6K
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Scale Material
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316 stainless steel
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Overall Scale Length
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Scale travel length + 10.2" (258mm)
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Standard Cable
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15 core, 11.5' (3.5m) armored
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Maximum Cable Length
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65.6' (20m)
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Standard Connector
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15 pin "D" type
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EMC Compliance
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BS EN 61000-6-2 and BS EN 61000-6-4
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Options
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Resolutions
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Custom resolutions available
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Non-Armored Cable
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PUR (polyurethane)
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Connectors
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• IP67 (NEMA 6)
• None (flying lead) |
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Cable Lengths
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22' (7m) or 19.68" (0.5m)
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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.
