Connections
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MXD73 Installation Guide
Connections
Supply Voltage Connections
The MXD73 can be powered from either an AC or DC supply voltage. The unit provides two
terminals for each of the input connections (“Live” & “Neutral” for an AC input, or + & - for a
DC Input), plus an “Earth” terminal. This allows the supply to be “daisy chained” to the relay
contacts and/or other instruments. The instrument uses a universal power supply that
accepts a wide range of voltage and frequency inputs. Refer to the label adjacent to the
power supply terminals for the input voltage limits. Exceeding these limits may
damage the instrument.
85-265V AC/DC
Power Connections
18-32V AC/DC
Power Connections
The power supply should be taken from an isolated spur and fused to a maximum of 3
Amps. If the relays require greater current, then a separate 5A fuse will be required. The
incoming Earth connection must be connected to the “Protective Earth” terminal.
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