Salicru SLC Link Series, Service Manual

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4.- INTRODUCTION AND SINGLE LINE DIAGRAM.
• The UPS SLC Link series is a double conversion On-line type (AC-DC and DC-AC), with an output sinewave that gives a complete
safety protection under extreme conditions of the electrical supply (voltage and frequency fluctuations, electrical noises, mains fault
and blackouts, etc...). Whichever it is the load type to protect, these equipments are ready to assure the quality and continuity in the
electrical supply. Their communication possibilities allow it to be integrated in an IT, industrial or telecommunications environments.
• The double filtering of input-output and its hermetic structure allow them to supply loads with total safety against electrical
perturbations. Basically their operation is as follows:
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A rectifier with an active power factor corrector (PFC) converts the AC voltage of the mains into a regulated DC voltage, capable
to feed the inverter permanently, by absorbing a sinewave current from the mains. It makes that the input current is smaller
because there is not any harmonic. This converter boosts the battery voltage when the mains is not available or out of range.
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The charger with PWM technology and charging curve I/U, is the responsible one of maintaining the batteries at good level of charge.
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The Pb-Ca batteries, sealed and maintenance free, are in charge of storing the energy given by the charger, to replace the
mains in its defect. As more sensitive element inside the robustness, they are taken care in all their aspects:
- Battery charging according to the temperature.
- Protection against deep discharges.
- Control of the aging through automatic tests.
- Far location from heat sources.
- Optimised charger to shorten the times of recharge in equipments with long back up time.
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The energy coming from the rectifier or the batteries is converted from direct current to alternating current by the inverter,
which is supplying one side of the Automatic Bypass. The other side of the Automatic Bypass is coming from the mains
directly. A simple change, on the microprocessor order to the Bypass, will be enough to obtain the relief from inverter to
Bypass and vice versa without transfer time.
• The UPS SLC Link series is designed to give solution to almost all installation type, indistinctly of the input and output voltage
values of the equipment.
• The input frequency is automatically auto-sensed, once the equipment is connected to the mains.
• All the models have input circuit breaker protection and two groups of outlets, independent to each other which can be
disabled through the software (Off). Some models incorporate a circuit breaker protection for each group outlets and an extra
IEC 320 of 16A outlet additional to the first group of outlets.
• Also the equipment has:
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Two communication ports (RS-232 and USB) with its monitoring software «UPSMON» and the connection cable to be used
between the equipment and the computer. Thanks to it, it is obtained an intelligent operation that provides a perfect
protection of the critical loads.
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Two RJ-45 connectors, for ETHERNET network protection against transient voltages.
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Terminal strip of two pins, for the REPO (Remote Emergency Power Off).
• You can opt for assemblies in cases «tower» or 19" rack type and in both cases the back up time can be increased, by
connecting to the UPS additional battery modules through the foreseen connector in the same one and in each battery
module.
• It is possible to have as an option, two electronic board interfaces. A SNMP/WEB card for the management and supervision
through an IT network or internet and a 5-dry contact AS/400 card with dry contacts. It is not possible to have both options
together.