Low Profile Incremental Encoder
Opto-ASIC Miniature Frameless Caliper
Ideally suited for integration into motors or other tight packaging
constraints, the BEI Duncan MOD 700 Series introduces a highly
miniaturized rotary incremental encoder that accommodates a
broad range of standard code disk resolutions and diameters.
The MOD 700 incorporates BEI's proven Opto-ASIC technology
- a phased array photo diode IC noted for its high tolerance for
axial movement, low power consumption and high operating
temperature range - into a highly miniaturized lead-frame caliper
design, offering resolutions up to 2540 PPR (Pulse Per
Revolution). Weighing only 25 grams, the unit includes integral
surface mount pads for SMT installation onto PCBs or flexible
circuitry. Two integrally molded orientation posts assure correct
alignment onto PCB circuitry.
MOD 700
SHOWN ACTUAL SIZE
Offering maximum versatility and compact size, the MOD 700
can be provided with a wide range of optical disks to
accommodate a variety of shaft diameters. Disks can be provided
in standard optical radii from 0.375" (9.38mm) to 0.860"
(21.5mm). Photolithography film disks are also available as a
lower cost alternative and are suited for lower temperature
extremes.
Ordering Information:
MOD 700 Series Encoder Caliper:
Example: MOD7
X0-YYYY
MOD 700 Features
Low profile caliper design
Frameless, miniature size
Surface Mountable (SMT)
Caliper’s pins locate caliper in holes on customer’s
circuit board
Holes in caliper designed to accommodate
alignment tooling
Resolutions To 2540 PPR
Ranges from 100 to 2540 PPR
Shaft Drive Diameter Flexibility
Optical disks available to accommodate a range of
shaft drive diameters
Tolerant Alignment
Shaft endplay ±0.245mm (±.010 in.)
Shaft radial play of up to ±0.127mm (±.005 in.)
Custom Configurations Available
(consult factory)
Ordering Information:
MOD 800 Series Encoder Disk:
Example: MOD8
AB-C-DD-EEEE
ISO9001 Certified/QS9000 Registered
15771 Red Hill Avenue
Tustin, CA 92780-7303
(714) 258-7500 Fax: (714) 258-8120
email: sales@beiduncan.com
www.beiduncan.com
Low Profile Incremental Encoder
MOD 700 Series
Mechanical Specifications
Dimensions
Mechanical Travel
Weight
See Figure 1
Continuous
25 grams
Incremental
(Ref. Table 1)
Digital, Dual channel (“A”, “B”)
w/quadrature and gateable index
5.0 V
±0.25V
DC
100kHz, Data and Index
(up to 350kHz optional)
TTL output (4.0V min. @500µA source,
0.8V max. @ 16 mA sink)
180°
±36°
60mA maximum, 40mA typical
800nSec
200nSec
90° to 450° w/no relation to
data “A” or “B”
w/data “A” and “B”: 45° to 135°
90°
±45°
5G peak, 60 – 2,000 Hz
50G, half sine pulse, 5 ms duration
0°C to +85°C
(–40° to +105°C optional)
-40°C to +105°C
Unsealed housing
Surface mount
See Figure 3
Caliper pins locate caliper in holes on
customer’s circuit board
Holes in caliper spacer will accommodate
alignment tooling
Stainless Steel, 0.051mm thick
(Mylar-type disk available, maximum
temperature 100°C)
Available in optical radiuses from .335 - .920
inches
Low Profile Incremental Encoder
MOD 700 Series
0.74
(.029)
Electrical Specifications
Code
Pulses per revolution (PPR)
Output Format
Input Voltage
Frequency Response
Output Type
Symmetry/Duty Cycle
Input Current
Rise Time w/2kΩ pull-up resistor
(1)
Fall Time w/2kΩ pull-up resistor
(1)
Index Width (one PPR, see Fig. 2)
if ungated:
if gated
(2)
:
Edge Separation
17.7
(.70)
4.76
(.188)
1.87
(.073)
8.89
(.350)
9.6
(.38)
FIGURE 1
mm
(in.)
360°
180° NOM.
90° NOM.
90° TO 450°
Environmental Specifications
Vibration
Shock
Operating temperature range
Storage temperature range
Enclosure
Type
Pinout
Mounting
Alignment
OUTPUT WAVEFORM
CW ROTATION ENCODER END
(WHEN VIEWED FROM ASIC SIDE OF ENCODER)
FIGURE 2
Caliper Termination/Mounting/Alignment
GROUND
INDEX
DATA ”A”
LED DRIVE
DATA “B”
Mating Codewheel
Type
FIGURE 3
V
CC
NOTES:
1. Pull-up resistors added externally by
customer.
2. Gating circuitry added externally by
customer.
© Copyright 2002 BEI Technologies, Inc. Specifications subject to change without notice. BE2018
ISO9001 Certified/QS9000 Registered
15771 Red Hill Avenue
Tustin, CA 92780-7303
(714) 258-7500 Fax: (714) 258-8120
email: sales@beiduncan.com
www.beiduncan.com
DIY/Open Source Hardware
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