3. POWER SUPPLY
3.1 Mains Operation
The universal mains adapter ZB 5090-NA3 for 100 to 260V AC to 12V DC, 2A,
is generally used for the power supply of the measuring instrument. It is
connected to the socket U-DC (7) and is locked by turning it to the right. In
addition, the banana plug with the connection for the protective earth conductor
must for interference suppression be connected to the bare socket beside.
Only in case of exceptions (e.g. in industrial environments) the protective earth
conductor itself can show such high voltage spikes that it is better to avoid its
connection.
The option N involves the installation of the plug-in module ES 5590-N1 with an
integrated switched-mode power supply that allows for a voltage supply from
90 to 260V AC (50 to 60Hz) via a standard mains cable.
Danger! Mains Voltage!
The mains plug must whatever
happens be disconnected from the power supply plug-in module
ES 5590-N1 before a plug-in module is installed into or removed
from the system!
3.2 Operation with Rechargeable Battery (Option A)
With the option A, a 7.2V NiCd rechargeable battery with 1.5 Ah will be
installed, which allows, at a current consumption of approximately 21mA, an
uninterrupted operating time of approximately 75 hours. The operating time will
be shorter if selector switch boards (approx. 12mA) are installed or sensors are
connected that require additional current (e.g. humidity sensors FH A646 2mA
or rotating vanes approximately 3mA) or if the serial interface (4mA) is used.
When the voltage of the rechargeable battery has reached 7V a -symbol
starts flashing in the display. An exact determination of the voltage of the
rechargeable battery and an estimation of the remaining operating time are
available with the measuring channel
´Batt´
.If the device is only operated with
the rechargeable battery the green lamp SUPP (1) will not be on at all. For
charging the rechargeable battery the 12V mains adapter ZB 5000-NA3 can be
used, which also allows for fully recharging an empty rechargeable battery
within 2 hours. During this process the green lamp will be continuously on for
charge control. When the green lamp flashes, the rechargeable battery is fully
recharged and the charge circuitry switches to trickle charge. As a result, the
power supply can, during buffer operation, remain connected to the measuring
instrument.
ALMEMO
®
5590-2
14
Power Supply
Summary of Contents for Almemo 5590-2 V5
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