6
4. Connect the leads of the consumers to joints OUT + and - of the joint box on the power pack board [6].
(Optionally connect the MZN1 module bOUT- and load).
5. Activate the 230 V AC power supply and insert the power network fuse protecting the transformer primary circuit
[9]. Check the optical signalling of the power pack operation. The output voltage of the unloaded power pack is
equal to ~ 13.8 V DC. The voltage may fluctuate from 12.8 V to 13.8 V DC during battery charging.
6. Connect the battery in accordance with the designations [3] with colours. After this operation is completed, the
voltage appears in the output of the power pack, which is signalled by the green diode on.
7. Perform the power pack test checking the optical signalling [4] [5]: - the disconnection of the voltage 230 V AC
through the removal of the fuse from the transformer socket will be signalled by the red diode going off.
8. Following the assembly and checking the correctness of operation, the enclosure may be locked.
3. Handling and operation.
3.1. Power pack operation signalling.
The unit is equipped with the optical signalling of operation states:
Red diode:
on -the power pack is supplied with voltage 230V AC
off -the power pack is not supplied with voltage 230V
AC
Green diode
on – DC voltage at the output of the power pack
off – DC voltage missing at the output of the power
pack
- on
- off
Description
Comments
Proper state of operation
Output overloaded or short
circuited
- check cabling and consumers
- if the battery is connected, check
battery fuse
The
absence
of
power
supply
from
the
power
network,
operation
from
battery
- check transformer fuse
The absence of voltage at
the output
- check cabling and consumers
- check transformer fuse
- check battery fuse
flickers
Output overloaded
- lower the consumption of current by
consumers
Tab. 4 Optical signalling.
3.2. Operation from the battery.
Starting the operation from the battery.
The time of operation with supplies from battery depends on the battery capacity, the extent of charging
and the load current. For example, for the typical, fully charged battery with capacity of 17 Ah and load current 2A,
the maximum operation time safe for the battery is approximately 8h.
Starting the power pack from the battery: after connecting the battery in accordance with the
designations [3], the voltage appears on the output terminals of the power pack.
The limitation of the battery charging current.
The power pack is equipped with the battery charging current limitation to the value:
- Iacc (max) = 1.4 A with unloaded power pack Iout = 0A
- Iacc (aver.) = 0.3 A with power pack load with current Iout = 1.7 A
