Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Uživatelský manuál stáhnout pdf (Strana 32)

2.5.4 Digital Outputs (Pulsed Outputs)

Digital outputs are open-collector transistors and are able to switch loads up to 30VDC,

200mA.

The 8 digital outputs share the same terminals as the digital input. These terminals are

marked D1-8.

Figure 14 – Digital Output Wiring

When active, the digital outputs provide a transistor switch to EARTH (Common).

To connect a digital output, refer to “Figure 14” above. A bypass diode (IN4004) is

recommended to protect against switching surges for inductive loads such as relay

coils.

The digital channels D1-4 on the WI-I/O 9-U2 module can be used as pulse outputs with

a maximum output frequency of 10 KHz.

Digital Output Fail Safe Status

As well as indicating the Digital Output status (on / off), the LEDs can also indicate a

communications failure by flashing the Output LED. This feature can be utilised by

configuring a Fail Safe time and status on the “I/O – digital Output” screen in the

Configuration software as shown below.

WI-IO 9-U2

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 125 126

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Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Uživatelský manuál Strana 32