19. IO unit

The I/O unit offers six configurable inputs/outputs, providing flexibility and versatility for a range of industrial applications.

Key Specifications:

Up to 8 I/O units can be installed in sequence without external power. In this setup, they operate in “logic” mode, limiting the maximum output current to 0.02A per channel.
With external power, a maximum of 24 I/O units can be installed in sequence.
The unit complies with the IP31 protection standard, ensuring basic protection against dust and low-level water exposure.

Operating Modes:

Digital Input (DI): Inputs can be configured to handle signals up to 30VDC. The I/O threshold and signal filters can be adjusted through the web UI, with future updates allowing for faster communication without hardware modifications.
Digital Output (DO): Two options: 24V 0.02A output and 24VDC 0.5A output with external power. DO pins operate in “Push-Pull” mode (logic “1” = 24VDC, logic “0” = 0VDC).
Analog Input (AI): Configurable to accept either 4-20mA or 0-10V signals via the web UI.

1. Technical Data

1.1 Temperature Range:

Operating Temperature:	0℃ to 50℃
Storage Temperature:	-40℃ to 70℃
Operating Humidity:	10% to 90% (non-condensing)
Storage Humidity:	5% to 90% (non-condensing)

1.2 Dimensions and Weight:

Module Size:	30 x 85 x 93 mm
Weight:	256 g

1.3 Voltage Supply:

Power Supply:	5-36 VDC
Idle Consumption (Main Unit):	2.5W (24V)
Idle Consumption (Main Unit + 1x Energy Meter):	3.0W (24V)
Max Power Consumption:	20W
Voltage Limit (Main Unit):	-40V to +38V

1.4 General Limitations:

Max Units Without External Power:	8 (Max 0.02A per output channel)
Max Units With External Power:	24

2. Connectors

2.1 Push-in CAGE CLAMP (WAGO) Requirements:

We use WAGO cage clamp connectors for all units. Ensure your wires meet the following specifications for optimal performance:

Wire Gauge: Ensure wire gauge is within the recommended range.
Insulation Type: Use wires with compatible insulation for the connector’s clamping mechanism and environment.
Stripping Length: Strip wire ends to the correct length for secure clamping.
Wire Preparation: Straighten and clean wire ends before insertion for proper contact.

Refer to the table below for more details:

Solid Conductor:	0.14 – 1.5 mm² / 28 – 16 AWG
Fine-Stranded Conductor:	0.14 – 1.5 mm² / 26 – 14 AWG
Fine-Stranded w/ Insulated Ferrule:	0.25 – 0.75 mm²
Fine-Stranded w/ Uninsulated Ferrule:	0.25 – 1.5 mm²
Strip Length:	8 – 9 mm / 0.31 – 0.35 inches

2.2 Connecting New Units:

To connect a new measurement unit, follow the procedure shown in the images below to assemble the interconnection bridge.

⚠️ Safety Notice: Ensure all wires are disconnected or voltage-free before adding new units to prevent electrical hazards or device damage.

3. Front Panel Interface

LED	State	Meaning
PWR	Light	The device is ready.
	Blinking	The device is booting up.
	No light	There is no power. Please check the power source.
LINK
	Blinking	Indicates communication with the main unit.
	No light	There is no communication with the main unit.
ERR	Light	An error has occurred, or the configuration process is in progress.
ERR	No light	No issues have been detected.
EXT	Light	External power connected.
EXT	No light	External power is not connected.
1	Light	There is logic “1” on the IO pin.
	No light	There is logic “0” on the IO pin
	2	Light	There is logic “1” on the IO pin.
No light		There is logic “0” on the IO pin
3		Light	There is logic “1” on the IO pin.
	No light	There is logic “0” on the IO pin
	4	Light	There is logic “1” on the IO pin.
No light		There is logic “0” on the IO pin
5		Light	There is logic “1” on the IO pin.
	No light	There is logic “0” on the IO pin
	6	Light	There is logic “1” on the IO pin.
No light		There is logic “0” on the IO pin

4. Unit Protection

All pins in every configuration are protected against high voltage, high current, and reverse polarity. However, it’s important to note that the M and L+ power pins, as well as the I/O pins on the I/O unit, are not galvanically isolated.

Power Modes:

Logic Mode (without external power):
- Maximum total power output (L+, M, and I/O): 150mA
- Maximum I/O output per channel: 20mA
Power Mode (with external power):
- Maximum total power output (L+, M, and I/O): 3.5A
- Maximum I/O output per channel: 0.5A

Automatic Protection Features:

Short-circuit or excess current on L+ and M: The unit will automatically shut down until the issue is resolved.
Excess current on I/O pins: The affected I/O pin will be automatically disabled until the issue is resolved.

Basics