User manual ZSP121N-DR
Nr dok. 0696.00.95-02.0 Strona
6/8
First start
If all connections have been made correctly after connecting the power supply to the mains, the
green
MAINS
signalization diode on the power supply packet and the
MAINS
diode of the eternal
indication should be on.
Two checks must be performed when starting the device.
Checking capacity of maintaining output voltage.
Disconnect the mains with the switch mounted on the power supply casing. The power supply
should go into the battery operation mode, maintaining the voltage on its both outputs. You can use any
voltage tester for the purpose, e.g. a voltmeter or a light bulb.
Note.
Connecting the battery to operate inside the power supply occurs only when the battery voltage is
higher than 21.6V.
After disconnecting the mains, the green
MAINS
LED on the power supply packet should go out and
its counterpart of external signalization should be flashing. At the same time, the
MAINS FLT
relay
should go into the standby mode (the position of contacts in accordance with the drawing near the
connector).
The transition into the battery operation is also signaled by the
FAULT
LED of the external
signalization and the
GEN FLT
relay should go into the standby mode with delay of 5s.
Battery circuit test
Break the battery circuit by disconnecting one of the cables when the power supply is in the mains
operation mode. This state will be detected by the power supply at the nearest test within 90s and
signaled by flashing of the
BAT
diode.
In this state, the external
LED FAULT
signalization should be activated and the
GEN FLT
relay
should go into the standby mode (the position of contacts in accordance with the drawing near the
connector). However, the
MAINS FLT
relay should remain in the energized state. The state of the relay
can be tested, for example, with an ohmmeter applied between the appropriate outputs of its contacts.
After removing the interruption in the battery circuit, the generated fault signalization will be
removed automatically. This can happen immediately when the battery status starts the battery
charging or only after 90 seconds, at the next, correctly performed test.
Notes on operation and servicing
Output voltage values as well as signalization thresholds are pre-set. The power supplies after their
installation require supervision related only to faults that may occur during the operation of the device.
The battery bank is connected by the power supply when only the mains is on and if the battery
voltage is higher than 21.6V. If the battery is faulty (with less than 10V), its installation will not be
recognized by the power supply in any way. For average voltages, the warning signalization is activated
in the form of short flashes of the external
FAULT
LED signalization, but the battery itself will not be
connected.
In the battery mode, when the mains is out, after discharging the battery down to 21V, the batteries
are disconnected, so their complete discharge does not influence the battery lifetime.
Note 1.
Disconnecting the batteries from the load after their discharge protects the batteries against
deterioration, but only under the condition that the power supply failure will not last too long (e.g. several
days). Lack of recharging the batteries for longer time can lead to the battery voltage self-limitation,
which will prevent the batteries from automatic connection after the mains returns.
Note 2.
It should be noted that the power supply itself receives a certain current for its own needs, which in the
absence of mains power, can lead to discharging the batteries even in the case when the load has been
completely disconnected. Such the situation can take place, for example, when installing power