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1. Mounting is usually done either
using the D-style square flange mount, E- or G-style servo mounts, or
one of the standard face mounts, Fl for example. Consult factory for additional
face mount options.
2. The shaft seal is recommended
in virtually all installations. The most common exceptions are applications
requiring a very low starting torque or those requiring operation at both
high temperature and high speed.
3. Non-standard index widths and
multiple indices are available by special order. Consult factory.
4. Complementary outputs are recommended
for use with line driver type (source/sink) outputs. When used with differential
receivers, this combination provides a high degree of noise immunity.
Output IC's are available in either Line Driver (LD) or Open Collector
(OC) types. Open Collectors require pull-up resistors and so have higher
output impedance(sink impedance is similar to that of line drivers). In general, use of a Line Driver style
of output is recommended. Line Drivers source or sink current and their lower impedance
mean better noise immunity and faster switching times. Warning: Do not connect any line driver outputs directly to circuit common/0V. Those may damage the driver. Unused outputs should be isolated and left floating. Our applications
specialists would be pleased to discuss your system requirements and the
compatibility of your receiving electronics with Line Driver type outputs.
28V/V
Multi-voltage Line Driver(7272*): 100 mA source/sink.
Input voltage 5 to 28 VDC +/- 5% standard (Note: Vout = Vin). This driver is TTL compatible when used with 5 volt
supply. Supply lines are protected against
overvoltage to 60 volts and reverse voltage. Outputs are short circuit
protected for one minute. Supply current is 120 mA typical (plus load current). This is the
recommended replacement for 3904R and 7406R open collector outputs with internal pullup resistors. It is also a direct replacement for any 4469, 88C30, 8830 or 26LS31 line driver.
28V/5
Multi-voltage Line Driver(7272*) : 100
mA source/sink. Input voltage 5 to 28 VDC +/- 5% standard, internally regulated with 5V (TTL compatible) logic out. Supply lines are protected against overvoltage to 60 volts and reverse voltage. Outputs are short circuit protected for one minute. Supply current is 90 mA typical (plus load current).
Multi-voltage Line Driver(4469*): 100 mA source/sink.
Input voltage 5 to 15 VDC +/-5% standard (Note: Vout = Vin). TTL compatible when used with 5 volt. Supply
lines are protected against overvoltage to 60 volts and reverse voltage.
Outputs are short circuit protected for one minute. Supply current is 90
mA typical (plus load current). This is the recommended replacement for 4469 Line Driver.
28V/OC
NPN Open Collector (3904*, 7273*): Current sink of 80
mA max. Current sourced by external pull-up resistor. Output can be pulled up to voltage
other than supply voltage (30 V max). Input voltage 5 to 28 VDC +/- 5% standard. Supply Current is 120 mA typical. This replaces prior IC's with designations of 3904, 7406, 3302, 681 and 689.
5V/OCR, 15V/OCR, 24V/OCR
Open Collector (394R*, 7406R*, 7273R*): Current sink of 70 mA max. Includes internal pull-ups sized at approximately 100 ohms/volt. Max current source is 10 mA. Supply current is 100 mA typical, 120 mA with internal pull-ups. The 5V/OCR, 15V/OCR and 24V/OCR are often replaced by the 28V/V in system upgrades.
3904, 3904R, 4469, 5V/V, 5V/OC, 5V/OCR, 9V/OCR
Intrinsically safe line driver and open collector outputs. These drivers are specific to intrinsically safe encoders, and are installed per the appropriate control drawings listed in Table 2.1 on page 48 of the BEI catalog.
6. Special -S at the end of the model
number is used to define a variety of non-standard features such as special
shaft lengths, voltage options or special testing. Please consult the
factory to discuss your special requirements.
| 7. Higher frequency response
may be available. Please consult with the factory. |
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8. Extended temperature ratings are
available in the following ranges: -40 to 70°C, -40 to 85°C, -20
to 105°C and -40 to 105°C depending on the particular model. Extended
temperature ranges can affect other performance factors. Consult with
factory for more specific information.
9. Mating straight plug receptacles
may be ordered from the factory:
* Products manufactured prior to April 2007 used the line driver IC number instead of voltage output in model number.
Table 2. Disc Resolutions Available—Cycles
per Turn
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| Models H25, H38, H40, L25, E25 |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 16,
20, 24, 25, 26, 30, 32, 33, 34, 36, 37, 40, 45, 48, 50, 51, 56*, 60,
64, 66, 72, 75, 80, 86, |
| 88, 90, 100, 102, 120, 122, 125, 127, 128, 132,
144, 148, 150, 158, 160, 175, 176, 180, 187, 192, 200, 202,
204*, 217, |
| 220, 240, 250, 254, 255, 256, 264*, 274,
280, 283, 288, 292, 300, 312, 320, 321, 325, 360, 366, 372,
375, 377, 380, 381, |
| 384, 385, 393, 400, 430, 432, 450, 462, 480,
490, 500, 502, 508, 512, 522, 530, 550, 560*, 576,
598, |
| 600, 604, 625, 628, 635, 638, 640, 660, 672, 676, 680,
687, 690, 700, 720, 725, 735, 740, 744, 748, 750, 762, 768,
780, |
| 785, 800, 812, 825, 850, 864, 878, 888, 900, 912, 914,
938, 942, 955, 960, 1000, 1016, 1024, 1030, 1035, 1036, 1040, |
| 1054,
1056, 1074, 1076, 1080, 1088, 1100, 1101, 1125, 1136, 1200,
1237, 1250, 1257, 1270, 1280, 1300, 1314, 1332, |
| 1333, 1390, 1400, 1414, 1427,
1440, 1484, 1500, 1562, 1570, 1596, 1600, 1650, 1666, 1718, 1745, 1774,
1800, 1840*, |
| 1850, 1855, 1875, 1894, 1920, 1952,
1968, 1979, 1995, 2000, 2048, 2080, 2094, 2100, 2160, 2164, 2199,
2200, |
| 2250, 2356, 2400, 2485, 2500, 2514, 2519,
2540, 3000, 3125, 3600, 4000, 4096, 5000 |
Resolutions up to 72,000 available. Contact
factory for details.
*AB or ABC output only . |
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Table 3. Pinouts for Absolute Encoders
— 12 bits or more
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Direction Control: Standard
is CW increasing when viewed from the shaft end. Pin R is
normally HI (or N/C) and is pulled up internally to +V.
To reverse the count direction, Pin R must be pulled LO (COMMON).
Latch Control: Encoder
outputs are active and provide continuous parallel position
information when Pin U is HI (or N/C). Pin U is pulled up
internally to +V. When Pin U is LO (COMMON), the encoder
outputs are latched at the logic state that is present when
the latch is applied and will stay latched until Pin U is
no longer grounded.
Connector is a MS3112E14-19P, 19-pin connector on the encoder
body and mates to an MS3116F14-19S or equivalent.
Cable for a parallel signal output is a BEI P/N 37063 or
equivalent. (see Accessories)
Cable for a serial signal output is a BEI P/N 37048-003 or
equivalent. (see Accessories) |
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Dir/Latch on 15-bit Encoders: Due to a limited number of connector pins, either direction control or latch is available on pin U.
M18 Connector is a MS3102R18-1P, 10-pin connector on the encoder body and mates to an MS3106F18-1S connector or can be used with a standard cable/connector assembly, BEI P/N 924-31186-18XX (Where X = 10, 20 or 30 for a 10, 20, or 30 foot length). This is the preferred connector for SSI output.
M14/19 Connector is a MS3112E14-19P, 10-pin connector on the encoder body and mates to an MS3116J14-19S or equivalent. |
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