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ME15 Magnetic Encoder Manual
Revision 1.1
Product Overview
The ME15 Magnetic Encoder is the newest addition to AMCI's Encoder product line. The encoder is designed for
lower resolution and lower cost applications and provides 10 bits of resolution. The user has a choice either a SSI or 0
to 20mA, 4 to 20mA, 0 to 5V or 0 to 10V analog output. ME15's small size, high reliability, IP67 protection rating and
low cost, make it an ideal replacement for potentiometers and small industrial encoders. Sturdy machined housing and
a high resistance to shock and vibration also make these encoders better able to withstand difficult environmental
conditions.
ME15 has two major components: A small diametrically polarized magnet and a custom ASIC which contains an array
of Hall sensors that generate a voltage when exposed to a magnetic flux field. The ASIC detects the change in
magnetic flux distribution as the magnet rotates above it delivers a voltage representing its angular position. The ASIC
cancels magnetic interference permitting it to operate in areas of high external fields. The encoder's electronics
features a programmable device for converting the signals to a SSI-compatible bit stream.
The encoder is housed in an IP67 Size15 (1.5" dia) servo mount body with two options for shaft sizes - 1/4" and 6mm,
and two options for connections – through a 7-pin connector or built-in cable with flying leads of various lengths.
20 Gear Drive, Plymouth Industrial Park, Terryville, CT 06786
page: 1
Tel: (860) 585-1254
Fax: (860) 584-1973
Web: www.amci.com
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Summary of Contents for AMCI ME15
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Page 1: Product Overview
10 bits of resolution. The user has a choice either a SSI or 0 to 20mA, 4 to 20mA, 0 to 5V or 0 to 10V analog output. ME15’s small size, high reliability, IP67 protection rating and low cost, make it an ideal replacement for potentiometers and small industrial encoders. - Page 2 ADVANCED MICRO CONTROLS, INC. warrants that all equipment manufactured by it will be free from defects, under normal use, in materials and workmanship for a period of [18] months. Within this warranty period, AMCI shall, at its option, repair or replace, free of charge, any equipment covered by this warranty which is returned, shipping charges prepaid, within one year from date of invoice, and which upon examination proves to be defective in material or workmanship and not caused by accident, misuse, neglect, alteration, improper installation or improper testing.
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Page 3: Table Of Contents
ME15 Magnetic Encoder Manual Revision 1.1 Table of Contents Product Overview …………………………………………………………………………………1 Specifications ……………………………………………………………………………………...4 ME15 SSI Option………………………………………………………………………………….5 ME15 SSI Output Ordering Guide……………………………………………………...9 ME15 Analog Output Option………………………………………………………..……….…10 Analog Voltage Output …………………………………………………………………12 Analog Current Output…………………………………………………………………12 ME15 Analog Output Ordering Guide…………………………………………………13 Mechanical Dimensions………………………………………………………………………….14 Manual Revision History…………………………………………………………..…………….15... -
Page 4: Specifications
ME15 Magnetic Encoder Manual Revision 1.1 SPECIFICATIONS Mechanical Enclosure: Size 15 (1.5” dia) servo mount aluminum body; Connections: 7-pin Connector or Cable style; Shaft: 6mm or .25” Max. Speed: 20,000 RPM; Moment of Inertia: 1.75 * 10 oz-in-sec Starting Torque: 2 oz. in max @25° C (with standard shaft seal);... -
Page 5: Me15 Ssi Option
ME15 Magnetic Encoder Manual Revision 1.1 ME15 SSI OPTION Supply Voltage……………………5 - 30VDC (+/- 5%) Power Consumption……………….< 0.5W Measuring Range……………….…360°. Resolution/Code…………………..10 Bit / Binary Position Accuracy…………………0.5° Linearity……………………………< 0.5% Repeat Accuracy…………………...< 0.1% SSI Interface: Clock Frequency………………….100 KHz – 1 MHz Output Driver……………………..RS 485 (TIA/EIA Compliant) Short circuit proof outputs:……….Yes ∗... - Page 6 ME15 Magnetic Encoder Manual Revision 1.1 is the time of one interrogation. is the time that the Stop bit is valid, which is typically 15 – 20 µs. is the time between the last pulse of CLK signal cycle and the first falling edge of the next CLK cycle.
- Page 7 ME15 Magnetic Encoder Manual Revision 1.1 Enable lines have to be controlled in such way that only one M15 unit is enabled at time. Figure 4: Timing for ENn lines In a case that only one or a very few interrogations is needed during sampling time, then the ENn and CLK signal...
- Page 8 Brown -CLK Blue Orange White Mating connector: (sold separately) AMCI #: MS-9; Binder #: 99 0426 00 08 Figure 6: Block Diagram – SSI Output 20 Gear Drive, Plymouth Industrial Park, Terryville, CT 06786 page: 8 Tel: (860) 585-1254 Fax: (860) 584-1973...
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Page 9: Me15 Ssi Output Ordering Guide
Output Scaling: 1 = binary Binary Angular Range: K = 360° (This is the only option available on a ME15 with SSI output) 360° Direction: P = CW increasing looking at the shaft N = CCW increasing looking at the shaft... -
Page 10: Me15 Analog Output Option
For 45 º - and 90 º - modes, the slope is mirrored at 180 º. For the 180 º - mode, it has a step response at 270 º. This allows the ME15 to be used in a variety of applications. In these three modes, the output remains at its’... - Page 11 Figure 8: Angular Ranges with CCW increasing The Analog output version of the ME15 can be ordered to output its minimum to maximum output over the four Angular Ranges listed above. However, the next minimum to maximum cycle always begins at the start of the next full turn.
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Page 12: Analog Voltage Output
N.C. N.C. N.C. Mating connector: (sold separately) AMCI #: MS-9; Binder #: 99 0426 00 08 Figure 9: Block Diagram – Analog Voltage Output Figure 10: Block Diagram – Analog Current Output 20 Gear Drive, Plymouth Industrial Park, Terryville, CT 06786... -
Page 13: Me15 Analog Output Ordering Guide
1 = 4 to 20mA 1 = 4 to 20mA 2 = 0 to 20mA Angular Range: K = 360° (This is the only option available on a ME15 with SSI output) L = 180° M = 90° 360° N = 45°... -
Page 14: Mechanical Dimensions
ME15 Magnetic Encoder Manual Revision 1.1 ME15 Mechanical Dimensions 20 Gear Drive, Plymouth Industrial Park, Terryville, CT 06786 page: 14 Tel: (860) 585-1254 Fax: (860) 584-1973 Web: www.amci.com... -
Page 15: Manual Revision History
ME15 Magnetic Encoder Manual Revision 1.1 Manual Revision History Revision 0.0 was created 11/30/08 and was the initial release of the specifications Revision 1.0 was created on 1/30/09. Electrical Specifications revised. Revision 1.1 was created on 4/29/09. Electrical Diagrams added.
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