HEDS-8906 Avago Technologies US Inc., HEDS-8906 Datasheet - Page 4

• Manufacturer Part Number: HEDS-8906
• Description: TOOL ALIGNMENT 3CH 56MM CW
• Manufacturer: Avago Technologies US Inc.

Specifications of HEDS-8906

• Accessory Type: Mechanical Alignment Tool
• Product: Tools & Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: HEDS-904x Series
• For Use With: HEDS-9041#B00 - ENCODER MODULE 3CH 1000CPRHEDS-9041-J00 - ENCODER MODULE 3CH 1024CPRHEDS-9040#J00 - ENCODER MODULE 3CH 1024CPR516-2028 - ENCODER MOD OPT INCREMENTAL 3CHHEDS-9040#T00 - ENCODER OPTICAL GAP 3CH 2000CPR
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Defi nitions
Count (N): The number of bar and window pairs or counts
per revolution (CPR) of the codewheel.
One Cycle (C): 360 electrical degrees (°e), 1 bar and win-
dow pair.
One Shaft Rotation: 360 mechanical degrees, N cycles.
Position Error ( ΔΘ): The normalized angular diff erence
between the actual shaft position and the position indi-
cated by the encoder cycle count.
Cycle Error (ΔC): An indication of cycle uniformity. The dif-
fer ence between an observed shaft angle which gives
rise to one electrical cycle, and the nominal angular in-
crement of 1/N of a revolution.
Pulse Width (P): The number of electrical degrees that
an output is high during 1 cycle. This value is nominally
180°e or 1/2 cycle.
Pulse Width Error (ΔP): The deviation, in electrical degrees,
of the pulse width from its ideal value of 180°e.
State Width (S): The number of electrical degrees be-
tween a transition in the output of channel A and the
Absolute Maximum Ratings
Storage Temperature, T
Operating Temperature, T
Supply Voltage, V
Output Voltage, V
Output Current per Channel, I
Shaft Axial Play .............................................................................±0.25 mm (±0.010 in.)
Shaft Eccentricity Plus Radial Play .......................................... 0.1 mm (0.004 in.) TIR
Velocity ............................................................................................................. 30,000 RPM
Acceleration ..........................................................................................250,000 rad/sec
Note:
1. Absolute maximums for HEDS-5140/6140 codewheels only.
4
CC
O
............................................................................................-0.5 V to V
.......................................................................................... -0.5 V to 7 V
S
........................................................................-40°C to +100°C
A
...................................................................-40°C to +100°C
OUT
.......................................................-1.0 mA to 5 mA
neighboring transition in the output of channel B. There
are 4 states per cycle, each nominally 90°e.
State Width Error (ΔS): The deviation, in electrical degrees,
of each state width from its ideal value of 90°e.
Phase (φ): The number of electrical degrees between the
center of the high state of channel A and the center of
the high state of channel B. This value is nominally 90°e
for quadrature output.
Phase Error (Δφ): The deviation of the phase from its ideal
value of 90°e.
Direction of Rotation: When the codewheel rotates in the
direction of the arrow on top of the module, channel A
will lead channel B. If the codewheel rotates in the oppo-
site direction, channel B will lead channel A.
Optical Radius (R
center of rotation to the optical center (O.C.) of the en-
coder module.
Index Pulse Width (P
that an index is high during one full shaft rotation. This
value is nominally 90°e or 1/4 cycle.
2[1]
CC
[1]
OP
): The distance from the codewheel’s
O
): The number of electrical degrees