2880 Gold Tailings Court
Rancho Cordova, CA 95670
RSF Electronics, Inc. Fax: (916) 852-6664
Tel: (916) 852-6660
http://www.rsf.net
MSA 670 SERIES LINEAR ENCODERS
• Dual Guided
Encoder Head
• Large Mounting
Tolerance
• Square Wave
Output
• High Speed
Operation
RSF Linear Encoders are designed for CNC machine closed loop positioning
ISO 9001
feedback. Digital Readouts are also available for manually operated machines.
Scale Model System Accuracy Grating Max. Rated
Resolution* Grades** Pitch Velocity
Square wave Line Driver signals from integrated subdividing electronics
MSA 6705 0.1µm ±2,±3 µm/m 10µm 0.5 m/s
MSA 6709 0.25µm ±2,±3,±5 µm/m 10µm 1.0 m/s
MSA 6707 0.5µm ±3,±5 µm/m 20µm 1.0 m/s
MSA 6706 1µm ±3,±5 µm/m 20µm 2.0 m/s
MSA 6708 2µm ±5 µm/m 40µm 2.0 m/s
MSA 6702 5µm ±5,±10 µm/m 20µm 2.0 m/s
MSA 6704 10µm ±10 µm/m 40µm 2.0 m/s
Sinusoidal voltage signals 1Vss
MSA 6700-1 Dependent on external ±2,±3 µm/m 10µm 1 m/s
interpolation
MSA 6700-2 Dependent on external ±3,±5,±10 µm/m 20µm 2 m/s
interpolation
Sinusoidal micro-current signals
MSA 6701 Dependent on external ±3,±5,±10 µm/m 20µm 2 m/s
interpolation
MSA 6703 Dependent on external ±2,±3 µm/m 10µm 1 m/s
interpolation
* For TRUE INCH scales - Contact your RSF Representative
** Other accuracy grades upon request
Standard Measuring Lengths: (mm) 70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 620, 720, 820, 920, 1020,
1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040, 2240, 2440
0.1 Mounting Surface
Recomended
Min. width of mounting surface
Mounting Shim
32mm
Flatness of Mounting surface 0.1mm
M4 or #8-32 mounting screws(4 Places) Regions
0.1 Flat Washer(recomended)
Standard Reference Index Locations (Home pulses Locations)
For measuring lengths up to 170mm: RI-02 = Middle of measuring length
For measuring lengths 220mm to 1020mm: RI-07 = 35 mm from each end
For measuring lengths greater than 1020mm: RI-08 = 45 mm from each end
Please contact RSF for available custom Reference Index locations.
RSF Standard Cable & Connector Specifications
Function MSA67xx UHF 7 Pin Din 12 Pin Din 9 Pin ‘D’ 25 Pin ‘D’ Bendix Connei Connei
Cable Cable (L70) (L120) 15 Pin ‘D’ PT06 L121 L91
58023200 58023198 Sq Wave Sq Wave Sq Wave Sq Wave Sq Wave 1V p-p µA
A+ Green Green 3 C 1 1 A 5 1
A- Yellow Yellow --- D 2 2 --- 6 2
B+ Pink Orange 4 E 3 3 B 8 5
B- Red Red --- L 4 4 --- 1 6
RI + Brown Violet 6 G 5 5 F 3 7
RI - Gray Blue --- H 6 6 --- 4 8
5v Black Black 5 K , M** 7 23 C 2 7 12 3
0v White Brown 1 B, F**, J** 8 14 D 10 11 4
Shield Bare Bare* 7 A 9 8 E 9 inner* 9 inner*
* Outer shield to connector housing ** Optional
Connector Types
7 Pin Din: L70 Cable, Male 12 Pin Din: L120 Cable, Male ‘D’ Style: 9 Pin ‘D’ Male
K70 Cable, Female K120 Cable, Female 15 Pin ‘D’ Male
F70 Chassis, Female F120 Chassis, Female 25 Pin ‘D’ Male
9 Pin Connei: L91 Cable, Male 12 Pin Connei: L121 Cable, Male Bendix: PT06, Male
Cable Length & Special Connector Requirements
• A Three meter vinyl cable is standard.
• Custom cable lengths are rounded to the nearest 100 mm.
• Cable length is measured from the back of the connector strain relief to the strain relief on the encoder head.
• Standard tolerances for RSF cables are -0 mm +20 mm/meter of cable length.
• When ordering cables and connectors with special requirements. Please obtain a Cable Code Number from
RSF Electronics.
2880 Gold Tailings Court
Rancho Cordova, CA 95670
Ttttt RSF Electronics, Inc Fax: (916) 852-6664
Tel: (916) 852-6660
http://www.rsf.net
Encoder Specifications (670 Series)
Maximum acceleration: 130ft/sec² (40m/sec²) Power supply: Sinusoidal voltage
+5v ±5%, max 100 mA
Maximum vibration: 150ft/sec² (45m/sec²) Sinusoidal micro current
[40 to 2000 Hz] +5v ± 5%, max 90 mA
Square wave
Maximum shock: 15 g’s for 8 ms +5v ± 5%, max 150 mA
Scale coefficient 5.2 micro inch/in/°F Output signals: Square wave - line driver (RS422
of thermal expansion: 9.4 microns/m/°C standard) IC 34C87/TI SN75ALS194
Encoder head drag: <11 oz (<3 N) std. lip seals Sinusoidal Voltage
<1 oz. (<0.2 N) low drag seals 0.6 to 1.2 Vss (1.0 Vss typical) with
Terminating resistor Zo=120Ω for
Encoder head hysteresis: < 0.2µm A & B channels 0.2 to 0.85 Vss
(0.4Vss typical) with terminating
Weight Resistor Zo=120Ω for RI channel
Extrusion: 0.7 oz/in. Length of scale
Encoder head: 3 oz. – without cable Microcurrent Sine Wave
7-16µA (11.5 µA typical) with
Environmental protection: Anodized & Nickel Plated 1 k ohm resistor for A & B
Surfaces channels 2-8µA 5µA (typical)
with 1 k ohm resistor for Reference
Operating temperature: 32°F to 120°F (0°C to 50°C) Index pulse [MSA 6701 & 6703]
Storage temperature: 0°F to 158°F (-20°C to 70°C) Cable lengths: 3m (10 ft.) standard, armor
optional. Other lengths available
Humidity: 20% to 80% non condensing on request.
Operating principle: Light transmission, morier Scale housing sealing: Dirt and water spray protection
fringe using custom designed lip seals
Light Source: LED, MIL SPEC Life Expectancy: 40 x 106 meters
Light Receiver: SI elements
Signal tolerance ratio: 180°: 180°±10%
Phase shift tolerance: 90°±15%
HOW TO ORDER LINEAR ENCODERS
Order example: MSA 6706 / 220 / 5 / RI-07 / L120 / 3M
Model: MSA 6706 Cable: 3M = 3meter cable
Measuring length: 220 = 220 mm Connector: L120 = 12 pin male cable
Accuracy: 5 = ±5 µm/m accuracy Reference Index: RI-07 = 35 mm from each end
Ver 1/98
RSF Electronics, Inc.
2880 Gold Tailings Court - Rancho Cordova, CA 95670
Tel (916) 852-6660 - Fax (916) 852-6664 - http://www.rsf.net
Electronics ISO 9001
MSA670_ Series
Linear Encoders
1.0±0.3 mm
M4
