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Encoder
Benefits • IP67 rating (completely
sealed)• Withstands dust, dirt, oil and
other harshenvironmental
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 backerbar
needed |
| A
company of Schneider Electric |
| > | Linear Encoders | > | Absolute Linear Encoders | SHG-AB |
SHG-AB Linear Encoder
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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, the SHG-AB 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 | SSI Binary - 24 data bits, no parity |
|---|---|
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.