Nastec-HMA-1

HMA Overview

The definitive solution for automatic switching between power sources.

HMA is an electronic device for switching between power sources that can be combined with any MultiPower “HMA ready” device.

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Nastec-HMA-Vasco-connect
Nastec-HMA-Sund-connect
Nastec-HMA-Mida-connect

Five programmable switching logics can meet any application requirement

Manual
switching

Timed
switching

Switching
from digital input

Switching
by flow

Switching
by irradiation

Automatic power source management

HMA, combined with any MultiPower “HMA ready” device, switches between AC power (mains or generator) and DC power (photovoltaic panels) completely automatically, based on the programmed logic.

Nastec-HMA-VSMP

Mechanical disconnection of the two power supplies

Two interlocked contactors guarantee the uniqueness of the power supply and ensure separation in order to ensure maximum electrical safety.

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Control of auxiliary generator

When the AC power is provided by a generator, HMA is able to start or stop it according to need. It also monitors any signs of failure or running out of fuel.

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HMA Technical Specifications

Model VDC VAC I max Compatibility
HMA 218 90 – 400 1 x 90 – 265 18 A 4HS
SUND
MIDA Solar 203-207 MP
VS 218 MP
HMA 430 190 – 850 3 x 190 – 520 30 A VS 212 MP
VS 409-430 MP
HMA 485 190 – 850 3 x 190 – 520 85 A VS 438-485 MP

General specifications

Rated frequency 50 – 60 Hz (+/- 2%)
Ambient temperature -10 – 50°C (-14 – 122°F)
Max. altitude at rated current 1000 m
Protection degree IP54 (NEMA 12)
Settable digital outputs N.O. or N.C. 1. Motor run signal
2. Alarm signal
Analog inputs (10 or 15 VDC) 1. 4 – 20 mA
2. 4 – 20 mA
3. 4 – 20 mA or 0 – 10 VDC
4. 4 – 20 mA or 0 – 10 VDC
Digital inputs 4 digital inputs, configurable N.O. or N.C.
Communication RS485 MODBUS RTU, Bluetooth® SMART* (4.0)
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