Linear Encoder - Absolute Linear Encoders - SHG-A4

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• Incremental Encoders
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• Installation Manual (1,320k)
• Protocol Document (241k)
• Dimensional Drawing >100"
• Dimensional Drawing <100"
• Feature Comparison Chart
• Technology Guide (975k)
• Downloadable Technical
Documents
• Certifications & Ratings
• How They Work

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Encoder Benefits
• IP67 rating

(completely sealed)
• Withstands dust, dirt, oil

and other harsh

environmental conditions
• No mechanical wear

characteristics
• No more broken or

scratched glass scale
• Requires no cleaning or

maintenance
• No air purge required
• Tolerant to shock, vibration

and magnetic interference
• Easy installation, no

machined surface or backer

bar needed

Absolute Linear Encoders

SHG-A4

SHG-A4 Linear Encoder
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RS485 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.

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	• Honda PCR-E20FS (Fanuc) • 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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SHG-A4 Linear Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SHG-A4 Linear Encoder
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