MB-LG-4 Lo working hours counter

Features of the MB-LG-4 Lo working hours counter

Why choose the MB-LG-4 Lo?

The MB-LG-4 Lo is a four-channel, unidirectional operating time counter equipped with low-voltage counting inputs. The recorded data is accessible via RS-485 Modbus RTU.

What does this mean in practice?

• The module has 4 independent operating time measurement channels.
• The voltage range of the counting inputs is 6–30 V AC/DC.
• The recorded time can be read out in the specified time format.
• The maximum measurable time is 150 years.
• The time filter allows you to specify how the input signal is processed.
• The counter states are retained after a power failure.
• The channels can also be read as digital inputs.
• Data is accessible via RS-485 Modbus RTU.

How the MB-LG-4 Lo unidirectional operating time counter works

The MB-LG-4 operating time counteris a 4-channel unidirectional counter. Each channel is independent and counts operating time according to individual settings. The result is displayed as a floating-point number and, in parallel, as integer values broken down into days, hours, minutes and seconds. The counter has a software function enabling the counter reading for each channel to be reset independently. The maximum counting period is approximately 150 years. Upon reaching the maximum value (overflow), the counter automatically resets and starts counting from 0. The module features configurable options for counting using a low (0 V) or high (V+) signal, as well as a closed or open input signal circuit. The MB-LG-4 operating time counter allows you to set the minimum duration of the input signal that will be detected at the input and treated as an input activation (time filter). Shorter signals are ignored. This serves to eliminate interference (false pulses) that may occur at the input.

The counting input can be used as a digital DI input with the ability to read its status.
Reading the count values and configuring all counting, communication and data exchange parameters is carried out via the RS-485 port using the MODBUS RTU communication protocol. The application of supply voltage is indicated by the green U LED lighting up. Successful data exchange between the module and another device is indicated by the yellow Tx LED lighting up.