HEDS-56XX AVAGO [AVAGO TECHNOLOGIES LIMITED], HEDS-56XX Datasheet - Page 7

• Manufacturer Part Number: HEDS-56XX
• Description: Quick Assembly Two and Three Channel Optical Encoders
• Manufacturer: AVAGO [AVAGO TECHNOLOGIES LIMITED]

Mechanical Characteristics
Notes:
1. These are tolerances required of the user.
2. The HEDS-55X5 and 56X5, HEDM-5505, 5605 provide an 8.9 mm (0.5 inch) diameter hole through the housing for longer motor shafts. See
. The HEDS-5540 and 5640 must be aligned using the aligning pins as specified in Figure , or using the alignment tool as shown in “Encoder
4. The recommended mounting screw torque for 2 screw and external ear mounting is 1.0 kg-cm (0.88 in-lbs). The recommended mounting screw
Electrical Interface
To insure reliable encodingperformance, the HEDS-
5540/5640 and HEDM-5540 three channel encoders
require 2.7 kΩ (± 10%) pull-up resistors on output pins 2, ,
and 5 (Channels I, A, and B) as shown in Figure 1. These pull-
up resistors should be located as close to the encoder as
possible (within 4 feet). Each of the three encoder outputs
7
Parameter
Codewheel Fits These Standard
Shaft Diameters
Moment of Inertia
Required Shaft Length[2]
Bolt Circle[]
Mounting Screw Size[4]
Encoder Base Plate Thickness
Hub Set Screw
Figure 1. Pull-up Resistors on HEDS-5X40 and HEDM-5540 Encoder Outputs.
Ordering Information.
Mounting and Assembly”. See also “Mounting Considerations. ”
torque for  screw mounting is 0.50 kg-cm (0.4 in-lbs).
Symbol
J
2 screw mounting
 screw mounting
external mounting ears
2 screw mounting
 screw mounting
external mounting ears
Dimension
2  4
5 6 8
5/2 1/8
/16 1/4
0.6 (8.0 x 10
14.0 (0.55)
19.05
(0.750)
20.90
(0.82)
46.0
(1.811)
M 2.5 or (2-56)
M 1.6 or (0-80)
M 2.5 or (2-56)
0. (0.10)
(2-56)
can drive a single TTL load in this configuration. The HEDS-
5500, 5600, and HEDM-5500, 5600 two channel encoders
do not normally require pull-up resistors. However, .2
kΩ pull-up resistors on output pins  and 5 (Channels A
and B) are recommended to improve rise times, especially
when operating above 100 kHz frequencies.
-6
)
Tolerance
+0.000
-0.015
+0.0000
-0.0007
± 0.5
(± 0.02)
± 0.1
(± 0.005)
± 0.1
(± 0.005)
± 0.1
(± 0.005)
[1]
Units
mm
in
g-cm
mm (in.)
mm (in.)
mm (in.)
mm (in.)
mm (in.)
mm (in.)
mm (in.)
mm (in.)
(in.)
2
(oz-in-s
2
)