just 2” deep, is easily mounted on a through shaft. Securing the encoder to the shaft
is simple with a collet-style single screw clamp. The optional anti-rotation tether block
maintains housing stability during operation. The HS25 is designed to accommodate
shafts up to 3/4” in diameter. With optional insulating inserts, it can be mounted on
smaller diameter shafts. Applications include motor feedback and vector control, paper
converting and printing industries, robotic control, web process control along with many
other applications.
Special Models of the HS25 Incremental Encoder are available with one or more of the fol-
lowing certifications. Consult factory for details.
EN 55011
and EN 61000-6-2
UL 12.0035X
UL 13.0071X
CENELEC
II 1 G Ex ia IIB/IIC T4
II 3 G Ex nA IIB T4 Gc
C
Shaft Bore:
0.375”, 0.750”, 0.625”, 0.500”, dia. 0.625” and under are
supplied with insulating sleeves.
Allowable Misalignment:
0.005: T.I.R. on mating shaft 0.75” from shaft end
Bore Runout:
0.001” T.I.R.
Starting Torque at 25° C:
Through shaft version (SS) = 7 in-oz (max);
Blind shaft version (BS) = 4 in-oz (max)
Bearings:
52100 SAE high carbon steel
Shaft Material:
6061-T6 aluminum alloy
Bearing Housing:
Die cast aluminum with protective finish
Cover:
Die cast aluminum with protective finish
Bearing Life:
7.5 X 10
9
revs (25,000 hrs at 2500 RPM)
Maximum RPM:
6,000 RPM (see Frequency Response, below)
Moment of Inertia:
17 X 10
–4
oz-in-sec
2
Weight:
9 oz typical
Electrical Specifications
Code:
Incremental
Output Format:
2 channels in quadrature, 1/2 cycle index gated
with negative B channel
Cycles per Shaft Turn:
up to 2048 (see table A, this page)
Supply Voltage:
5 to 28 VDC available (see note 5)
Current Requirements:
100 mA typical + output load, 250 mA (max)
Voltage/Output:
(see note 5)
15V/V: Line Driver, 5–15 VDC in, Vout = Vin
28V/V: Line Driver, 5–28 VDC in, Vout = Vin
28V/5: Line Driver, 5–28 VDC in, Vout = 5 VDC
28V/OC: Open Collector, 5–28 VDC in, OCout
Protection Level:
Reverse, overvoltage and output short circuit
Frequency Response:
100 kHz (see note 7)
Output Terminations:
(see table 1, back page)
Note:
Consult factory for other electrical options
Environmental Specifications
U.S. Standards Class I, Group A,B,C & D;
Class II Group E, F & G
Canadian Standards
Class I, Zone 0, Group IIC
Class I, Div 2, Group A,B,C & D;
Class II, Div 2, Group F & G
Enclosure rating:
NEMA 4 & 13 (IP65) when ordered with shaft seal
and a cable gland.
Temperature:
Operating, 0º to 70ºC; extended temperature testing up to
85ºC available (see note 8); Storage, -25º to 90º C unless extended tem-
perature option called out
Shock:
50 g’s for 11 msec duration
Vibration:
5 to 2000 Hz @ 20 g’s
Humidity:
98% RH non-condensing
NOTES & TABLES:
All notes and tables referred to in the text can be found
on the back of this page.
HS25 Incremental Ordering Options
HS25
TYPE:
HS = Hollow Shaft
25 = 2.5” Encoder
Diameter
SHAFT BORE:
FOR ASSISTANCE CALL
800-350-2727
Use this diagram, working from left to right to construct your model number (example:
HS25F-62-R1-SS-1024-ABZC-28V/V-SCS18).
All notes and tables referred to can be found on the back of this page.
75 = 0.750”
62 = 0.625”
50 = 0.50”
37 = 0.375”
X=
Express
Encoder
HOUSING CONFIG:
F = Standard
EXPRESS ENCODERS
Items highlighted with
®
SPECIAL
NO. OF CHANNELS:
HAZARDOUS
SHAFT SEAL
VOLTAGE/OUTPUT:
FEATURES:
AREA RATINGS:
A = Single Channel
CONFIGURATION:
28V/V = 5–28Vin/out
S = Special
Blank = None
AB = Dual Quad. Ch.
SS = Through Shaft Rubber Seals
28V/5 = 5–28Vin/5Vout
EX = Intrinsically Safe features specified
BS = Blind Shaft Rubber Seal
28V/OC = 5–28Vin/OCout
ABZ = Dual with Index
NI = Non-Incendive
on purchase order
FS = Through Shaft Felt Seals
AZ = Single with Index
See note 5
Contact factory for
(consult factory)
BFS = Blind Shaft Felt Seal
See note 3
voltage options
See note 6
See note 2
TETHER:
COMPLEMENTS:
CYCLES PER
Blank = None
OUTPUT TERMINATION:
TURN:
C = Complementary
SM12 = MS3112E12-10P
R1 = Tether Block
(Enter Cycles)
Outputs
SCS = Shielded, Jacketed Cable with Cable
and Pin
See table A
See note 4
gland seal and cable length in inches,
R2 = Tether Arm
(i.e. SCS18 = 18 inches)
SCS18-M18 = SM18 connector on end of cable
are standard Express Encoders and ship in one to three days.
with length specified in inches
(i.e. SCS18-M18)
M18 = MS3101F18-1P
See table 1 and note 9
Specification No. 02065-001 Rev.5-16
These commodities, technology or software if exported from the United States must be in accordance with the Bureau of Industry, and Security, Export Administration regulations. Diversion contrary to U.S law is prohibited.
HS25 Incremental Optical Encoder
Dimensions
Thru Shaft Version
Notes
1.
The typical hollow shaft product is supported by, and clamped to, the driving
shaft. A flexible tether is used to keep the housing from rotating.
2.
The rubber 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. For these excep-
tions, a felt shaft seal is recommended. Felt seals require very low starting torque
and can virtually eliminate frictional heat. Encoders ordered with felt shaft seals
will have an enclosure rating of IP50 and will have less than 1/10th the Starting
Torque specified under Mechanical Configurations.
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.
5. Output IC’s:
Output IC’s are available as either Line Driver (LD) or NPN Open
Collector (OC) types. Open Collectors require pull-up resistors, resulting in higher
output source impedance (sink impedance is similar to that of line drivers). In
general, use of a Line Driver style 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/OV, which 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: V
out
= V
in
). 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 replace-
ment 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
