Sensoray 2426 Uživatelský manuál stáhnout pdf (Strana 10)

2426 Instruction Manual

Encoder Interface

Termination resistors are not supplied with the module. If your

encoder (or other signal source) employs RS-422/485 drivers,

you may need to supply external terminations near the ENC

connector. Refer to your encoder documentation for the

recommended practice.

6.4.2 Interfacing TTL/CMOS Signals

To interface to TTL and 5V CMOS compatible single-ended

signals, connect only the “+” pin and leave the “-” pin

disconnected as shown in Figure 7.

Figure 7: Connecting TTL/CMOS Encoder Clocks

If you are interfacing a single-clock device (e.g., tachometer),

connect its clock output to the +A input and leave the -A and

±B inputs disconnected. If you are not using the Index signal,

leave ±Index inputs disconnected.

6.4.3 Encoder Power

The +5VOUT and GND pins may be used to power an

encoder.

The ENC connector’s GND pin must be

connected to the encoder’s power supply

return. Failure to connect these returns may

damage the 2426 module.

If your encoder (or other pulse-generating device) will be

powered from the ENC connector, wire it as shown in Figure 8:

Figure 8: Encoder powered from the 2426 ENC Connector

If your encoder is powered by an external power supply,

connect it as shown in Figure 9. Make sure the encoder’s

ground is wired to the GND pin on the ENC connector.

Figure 9: Encoder powered from an External Supply

-A

2426 ENC

-B

-X

Encoder

2426 ENC

+5VOUT

GND

VCC

GND

Encoder

GND

VCC

GND

External

Power

2426 ENC

+ -

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