Users Manual & Installation Guide

PV- 5127: Power supply module with UPS

Battery monitor and charger

Battery voltages

The PV-5127 monitors the voltage of the battery as long as the main DC/DC converter is on. The voltage status controls the charger, the RS232 alarm output, the battery LED, and it can be read through PC/104. The possible ranges are:

Range

Thresholds

Empty

Below 9.5V

Low

Between 9.5V and (10.75V, 11.25V)

Medium

Between (10.75V, 11.25V) and (13.0V, 14.7V)

Full

Between (13.0V, 14.7V) and 15.0V

Disconnected

Above 15.0V

There is hysteresis when moving between some of the ranges. The notion (10.75V, 11.25V) denotes the lower and upper hysteresis levels, so that the change from low to medium happens when the voltage rises above 11.25V, but to change from medium to low, the voltage must drop below 10.75V.

When empty, and running on battery, power is immediately turned off to protect the battery against complete discharge. This is the safety shutdown feature. Empty can also mean that no battery is connected.

When low, and running on battery, a Critical alarm is reported through RS232.

The medium and full ranges control the charging mode, see below.

The disconnected state happens when the charger is on, and there is no battery connected.

Lead-acid charger

The PV-5127 has an integrated lead-acid battery charger that will maintain the UPS battery as long as the mains voltage is present. The battery charger has three modes of operation: Fast charge, trickle charge, and off.

In the fast charge mode, the battery charger will deliver a constant current to the battery as long as the battery voltage has not reached 14.7V. This current can be programmed by a jumper at ST1.

ST1 installed

Fast charge current=1A

ST1 removed

Fast charge current=0.5A

After reaching 14.7V, the charger goes into trickle charge mode. In this mode, the battery is supplied with a constant voltage of 13.6V. When the battery voltage falls below 13.0V, the charger returns to fast charge mode.

Charging a lead-acid battery while it is too hot may damage it. The PV-5127 has an input, J1, for connecting an external battery temperature sensor. The sensor, if used, should be physically

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Micro Technic PV-5127 Battery monitor and charger, Battery voltages, Lead-acid charger, ST1 installed, ST1 removed

PV-5127A, PV-5127 specifications

The Micro Technic PV-5127 and PV-5127A models represent a significant achievement in the field of precision measurement instruments, specifically designed to enhance efficiency and accuracy in various industrial and scientific applications. These devices are characterized by their robust construction, user-friendly interface, and advanced technological features that cater to the needs of professionals.

One of the standout features of both the PV-5127 and PV-5127A is their high-resolution digital display, which provides clear readouts of measurements, ensuring that users can easily interpret data in real time. The devices boast a wide measurement range, allowing them to perform accurate readings across various parameters, including voltage, current, and resistance. This versatility makes them ideal for use in labs, research facilities, and fieldwork.

The PV-5127 and PV-5127A incorporate advanced microprocessor technology, ensuring precise measurements and quick response times. This technology enhances the instrument's ability to perform complex calculations, making it suitable for various applications, including electronics testing, industrial maintenance, and educational purposes.

Both models feature intuitive controls, enabling users to navigate functions effortlessly. The user interface is designed for simplicity, minimizing the learning curve for new users while empowering seasoned professionals to utilize the instruments to their full potential. Additionally, the PV-5127A includes enhanced features such as data logging and connectivity options, allowing users to transfer data to computers or other devices for further analysis.

Durability is another notable characteristic of these models. Constructed to withstand harsh working conditions, the PV-5127 and PV-5127A are built with high-quality materials that protect against impacts and environmental factors, ensuring longevity and reliability.

Power efficiency is also a critical aspect, as both models offer low power consumption without compromising performance. This feature is particularly important for users who rely on portable devices for extended periods.

In summary, the Micro Technic PV-5127 and PV-5127A models are sophisticated measurement instruments that combine advanced technology with user-friendly design. Their versatility, durability, and efficiency make them valuable tools for professionals across various fields, enhancing productivity and accuracy in measurement tasks. Whether in a laboratory setting or an industrial environment, these devices stand out as reliable companions for precise measurements.