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The bluelog has interfaces for digital inputs (DI), digital outputs (DO), and multi-inputs (MI). Typical devices for these interfaces are ripple control receivers, remote control systems, and sensors. All inputs and outputs can be configured via the bluelog web interface under Devices.
Digital inputs
Since digital inputs are energized (wet contacts), they must be equipped externally with potential-free contacts (dry contacts) to ground.
Multi inputs
Multi inputs can be configured as:
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Digital inputs: see above.
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Analog inputs: 0…10 V, 0...20 mA, or 600…1800 Ω to be read as sensors.
Digital outputs
Digital outputs can switch between 24 V / 1 MΩ or GND / 1 MΩ. They can be configured as active high or active low.
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For active high 24 V / Active low 24 V: Voltage 24 V DC is supplied by the bluelog.
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For active high GND / Active low GND: Voltage 24 V DC is not from the bluelog. It must be provided by an external power supply.
|
Type |
Usage - open collector |
Range |
|---|---|---|
|
Digital output |
Active high GND (0: 1 MΩ / 1: GND) |
max. 24 V DC / max. 50 mA |
|
Digital output |
Active low GND (0: GND / 1: MΩ) |
max. 24 V DC / max. 50 mA |
|
Digital output |
Active high 24 V (0: 1 MΩ / 1: 24 V DC) |
24 V DC / max. 50 mA |
|
Digital output |
Active low 24 V (0: 24 V DC / 1: 1 MΩ) |
24 V DC / max. 50 mA |
The following diagrams show the electrical connections for the different logic levels:
-
0: Inactive
-
1: Active
|
Active high GND (0: 1 MΩ / 1: GND) |
Active low GND (0: GND / 1: 1 MΩ) |
|
|
|
Active high 24 V (0: 1 MΩ / 1: 24 V DC) |
Active low 24 V (0: 24 V DC / 1: 1 MΩ) |
|
|