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147
Model 120E
Vishay Spectrol
Document Number: 57090
Revision 20-Sep-02
FEATURES
• Long Life: 10 Million Revolutions Minimum (Contactless)
• Cost Effective: Elimination of A/D Converters
• Strainless Steel Shafts and Nickel-Plated Bushing in
Various Lengths
• Stability: - 40°C to + 65°C Operating Temperature
• Variability: Cable and Printed Circuit Terminations Available
Optical Encoder
ELECTRICAL SPECIFICATIONS
PARAMETER MINIMUM NOMINAL MAXIMUM
VCC Range (V) 4.75 5 5.25
Supply Current (mA) – – 30
Voh (V) 2.4 – –
Vol (V) – – 0.4
Pull-up Resistor (kΩ)– 10 –
Output Channel A leads Channel B by 90°
electrically, CCW direction
The Model 120E is a light-duty optical encoder that can be manually. This unique device outputs two square waves at a
maximum rate of 128 pulses in quadrature with other resolutions as low as 10 pulses available. Typical applications
includes Motion sensing and control, Motor control, Flow control, Low-to-high input for test and measurement, Medical
instrumentation, Robotics and Computer Peripherals.
MECHANICAL SPECIFICATIONS
PARAMETER
Vibration 10 to 2000Hz, 15G Mil Std, - 202
Method 204 Test Condition C
Shock 100G at 6ms Mil Std. 202,
Method 213 Test Condition C
Rotational Torque Sleeve 1.5 oz. in
0.25 oz. in. max.
Other torque ranges available
Operating Speed 300 RPM
Rotational Life 10.000.000 revolutions
Shaft End Play 0.005 maximum
Shaft Radial Play 0.010 at 1 in.
Shaft Axial Force 15 lbs. push/pull
Terminal Strength 2 lbs.
120 E N 128 CBL
MODEL PRODUCT ID SHAFT & BUSHING SIZE PULSES PER TERMINATION
RESOLUTION
Sleeve-bearing E = Encoder N = 1/4 in. (6.35mm) diameter by Number of pulses B66 = PC Terminal Type B-66
Construction with 0.875 in (22.23mm) long per revolution Horizontal mounting
two channel shaft 3/8 in (9.53mm) diameter C24 = PC Terminal Type
quadrature output x 32 NEF 2A by 3/8 in. (9.53mm) C-24, vertical mounting
long bushing CBL =7.5 IN. (190.5mm)
Long cable
CN1 = Cable with Connector.
ORDERING INFORMATION
Document Number: 57090
Revision 20-Sep-02
www.vishay.com
148
Model 120E
Vishay Spectrol
DIMENSIONS in millimeters
1/4” Square (6.35mm) Multiturn Cermet Trimmer
ENVIRONMENTAL SPECIFICATIONS
PARAMETER MINIMUM NOMINAL MAXIMUM
Operating Temperature (°C) - 40°C – + 65°C
Storage Temperature (°C) - 55°C–+ 110°C
Humidity 85% RH @ 40°C, 240 hrs – –
Terminal B66: PC Terminals, horizontal mounting
C24: PC Terminals, vertical mounting
CBL: 7.5 including cable
CN1: 7.5 including cable with connector
TERMINAL
PC Terminals: Type C-24 Block Diagram One Output
120E Series
Output Waveform
PC Terminals: Type B-66 TERM # FUNCTION
1 5VDC ± 5% at 30ma Max
2 “A” Out
3 Ground
4 “B” Out
“A” DIMENSIONS
Standard 0.160
Special 0.400 Max
COLOR FUNCTION
Red 5VDC ± 5% @ 30ma Max
Green Ground
Yellow “A” Out
Orange “B” Out
NOTES:
1. “A” Cable Length Standard 7.50 ± 0.50.
Other lengths available, specified by
customer.
2. “A” and “B” Outputs are TTL compatible
on all models.
Dimension Tolerances, Unless Otherwise Specified
FRACTIONS = ± 1/64 (0.40mm) DECIMALS = ± 0.005 GRDS = ± 0.010 (0.25mm)
Cable Style
0.6875
“A”
+ 0.000
- 0.031
“A” DIMENSIONS
STANDARD: 0.160
SPECIAL: 0.475 MAX 0.48
0.075
0.025 x 0.012
Thick
0.100
Typical
LOGIC
CXT
5.4K
OUTPUTGROUND 5V
90° ± 45° Phase Error
0
1
LOGIC
LEVEL
CCW ROTATION*
0
1
A
OUTPUT
B
0.125
0.8125
0.6875
(17.48mm)
0.53
1.18
(28.57mm)
3/8 x 32 NEF
0.2495
0.50 0.375 0.48 “A” ±0.50
0.375
0.6875
0.8125
0.4375 “A” + 0.000
- 0.031
0.025 x 0.012
Thick
0.100
*Channel A leads channel B by 90° electrically in CCW direction
