User guide

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Avago Technologies Motion Control Encoders in Electrical Motor Systems: Design Guide
5.3 Encoders for BLDC Motor System: By Output Signal
Applications are generally designed to receive and
transmit three dierent forms of output signal: analog,
digital or synchronous serial interface (SSI). Analog
output signals appear as a quasi-sinusoidal wave
(unprocessed) while digital output signals resemble
square waves (processed).
5.3.1 Digital signal output incremental encoders
Encoders that provide digital output are typically required
in applications such as servo motor and drives, industrial
automation, factory automation, semiconductor
equipments, oce automation applications and
consumer products.
Avago’s digital encoder is designed to suit commonly
available output requirements. It comes in options of
transistor-transistor logic (TTL) or RS422 standard line
drivers. TTL is considered a commonly available output
and is compatible with TTL logic levels, normally requiring
5.3 Selection Table: Encoders by Output Signal
Incremental Part Number Output Type
No. of
Channels Operating Temperature Max RPM Resolution
Motor
Diameter
Shaft
Sizes
Digital
AEAT-6600-T16 Digital 3-Channel
(ABI or UVW)
-40ºC - 125ºC 7000 8, 16, 32, 64, 128, 256, 512,
1024 CPR
≥ 10 Not
applicable
AEDB/T-9340 Digital 6-Channel -10ºC - 85ºC / -40ºC - 115ºC 4500 1000 - 2500CPR 42 3 to 12mm
AEDB/T-9140 Digital 3-Channel -10ºC - 85ºC / -40ºC - 115ºC >12000 100 - 500CPR 31 3 to 12mm
AEDx-8xxx Digital 2- & 3-Channel –40°C to 100°C <30000 500 CPR 20 2-5mm
HEDT-904x/914x Digital 3-Channel -40ºC - 140ºC 12000 512 CPR 48 See Note 2
HEDL-904x/914x Digital 3-Channel 0ºC - 100ºC >12000 400 - 1000CPR 48 See Note 2
HEDB/S-904x/914x Digital 3-Channel -40ºC - 100ºC >12000 50 - 2048CPR 48 See Note 2
HEDL-55/564x Digital 3-Channel 0ºC - 100ºC >12000 100 - 512CPR 42 2 to 8mm
HEDL-55/560x Digital 2-Channel 0ºC - 70ºC/ 0ºC - 100ºC >12000 100 - 1024CPR 42 2 to 8mm
HEDM/S-55/560x Digital 2-Channel -40ºC - 100ºC/ -40ºC - 70ºC >12000 96 - 1024CPR 42 2 to 8mm
HEDR-5xxx series Digital 3-Channel -40ºC - 100ºC >5300 1200-3600CPR 42 2 to 8mm
HEDC-5xxx Digital 2- & 3-Channel -40ºC - 100ºC >12000 50-1024CPR 42 2 to 8mm
HEDB-900x/910x Digital 2-Channel -40ºC - 100ºC >12000 96 - 1024CPR 48 2 to 8mm
HEDS-90xx/91xx/92xx Digital 2-Channel -40ºC - 100ºC >12000 50 - 2048CPR 48 See Note 2
HEDL-900x Digital 2-Channel 0ºC - 100ºC 3000 2048CPR 48 See Note 2
HEDT-900x/910x Digital 2-Channel -40ºC - 125ºC >12000 100 - 512CPR 48 See Note 2
HEDS-97xx/973x/974x/978x Digital 2-Channel -40ºC - 85ºC >12000 96 - 2048CPR 40 See Note 2
HEDR-542x Digital 2-Channel -10ºC - 85ºC 4800 200CPR 23 2 to 5mm
AEDR-850x Digital 3-Channel -20ºC - 85ºC 55kHz 304LPI ≥ 10 See Note 2
AEDR-8400 Digital 2-Channel -20ºC - 85ºC < 3000 700 - 870CPR/254 & 318LPI ≥10 See Note 2
AEDR-830x Digital 2-Channel -20ºC - 85ºC 9000 100 - 580CPR/ 36 - 212LPI ≥10 See Note 2
AEDR-831x Digital 1-Channel -20ºC - 85ºC 9000 100 - 580CPR/ 36 - 212LPI ≥10 See Note 2
Analog
HEDS-971x Analog 2-Channel -40ºC - 85ºC >12000 200 - 360LPI 40 See Note 2
AEDR-8320 Analog 2-Channel -10ºC - 70ºC 2450 490CPR/ 180LPI ≥10 See Note 2
Note:
1. CPR to LPI Conversion. CPR range is typical value for a 1-inch outer diameter (OD) codewheel.
2. Shaft size. Typically 2 – 8mm for 1-inch OD codewheel. Larger shaft sizes possible if used with a larger OD codewheel.
3. Maximum RPM value is based on response frequency limitation of the encoder signal. Mechanical limit may be higher.
4. Motor Diameter is suggested minimum OD of a motor that the encoder series can t into.
5. AEAT-60xx – magnetic encoder