Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Uživatelský manuál stáhnout pdf (Strana 61)

Publication 1760-UM002B-EN-P - March 2005

Installation 2-27

Connecting High-Speed Counters and Frequency Generators

High-speed counter signals on the Pico GFX-70 can be counted correctly on

inputs I1 to I4 independently of the cycle time.

Figure 2.29 High-speed counter, frequency generator

Connecting Incremental Encoders

Inputs I1, I2 and I3, I4 on the Pico GFX-70 can each be used for the

high-speed counting of an incremental encoder independently of the cycle

time. The incremental encoder must generate two 24V dc square wave signals

with a 90° phase shift between them.

Figure 2.30 Connecting incremental encoders

L01–

> 1 A

L01+

I1 I3 I4 I7 I8 I9 I10

L02+

I2 I5 I6 I11

I12

+24V 0V 0V

L01–

> 1 A

L01+

I1 I3 I4 I7 I8 I9 I10

L02+

AB

I2 I5 I6 I11

I12

+24V 0V 0V

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 399 400

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