Applied-motion STM23R-2ND Manual do Utilizador descarregar pdf (Página 17)

STM23R Hardware Manual

920-0056C

5/5/2015

Using the Optional Encoder

e STM23R-2NE and STM23R-3NE each come with a 1000-line, incremental encoder assembled to the rear

sha of the unit. e A, B and Index (Z) channel signals of this encoder can be connected back to the external

controller for position verication and enhanced performance, depending on the features of the controller. To

facilitate connecting the encoder signals to your external controller you should purchase cable part number

3004-263.

Incremental encoder specications:

• 10-pin connector provides the following signals (pin assignments): Ground (1, 2), Index− (3), Index+ (4),

• A− (5), A+ (6), +5VDC power (7, 8), B− (9) and B+ (10).

• Power supply requirements: 5 VDC at 56 mA typical, 59 mA max.

• e encoder’s internal dierential line driver (26C31) can source and sink 20 mA at TTL levels. e recom-

mended receiver is industry standard 26C32.

• Maximum noise immunity is achieved when the dierential receiver is terminated with a 110-ohm resistor in

series with a .0047 microfarad capacitor placed across each dierential pair. e capacitor simply conserves

power; otherwise power consumption would increase by approximately 20mA per pair, or 60mA for 3

pairs.

• If making your own cable to connect the encoder signals to your controller, we recommend using a shielded

cable with four or ve twisted pairs for improved noise immunity.

• Max encoder frequency is 100,000 cycles per second.

PIN 1

PIN 2

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23 24

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