Victron energy MultiPlus 12/3000/120 Anleitung Seite 20

5.5.1.3 Battery charge current limitation (default setting 75%)
For maximum battery life, a charge current of 10% to 20% of the capacity in Ah should be applied.
Example: optimal charge current of a 24V/500Ah battery bank: 50A to 100A.
The temperature sensor supplied automatically adjusts the charge voltage to the battery temperature.
If faster charging – and a subsequent higher current – is required:
- The temperature sensor supplied should alw ays be fitted, since fast charging can lead to a considerable temperature rise of the battery
bank. The charge voltage w ill be adapted to the higher temperature (i.e. low ered) by means of the temperature sensor.
- The bulk charge time w ill sometimes be so short that a fixed absorption time w ould be more satisfactory ('fixed' absorption time, see
ds5, step 2).
Procedure
The battery charge current can be set in four steps, using DIP sw itches ds4 and ds3 (default setting: 75%).
ds4 ds3
off off = 25%
off on = 50%
on off = 75%
on on = 100%
Note: w hen WeakAC is on, the maximum charge current is reduced from 100% to approximately 80%.
5.5.1.4 Stand-alone, parallel and 3-phase operation
Using DIP sw itches ds2 and ds1, three system configurations can be selected.
NOTES:
•
All units in a parallel or three phase system must be connected to the same battery. The DC and the AC cabling of all
units m ust be of the same length and cross section.
•
When configuring a parallel or 3-phase system, all related devices should be interconnected using RJ45 UTP cables (see
appendix C, D). All devices must be turned on. They w ill subsequently return an error code (see Section 7), since they have
been integrated into a system and still are configured as 'stand-alone'. This error message can safely be ignored.
•
Storing settings (by pressing the 'Up' button (step 1) – and later on the 'Dow n' button (step 2) – for 2 seconds) should be done
on one device only. This device is the 'master' in a parallel system or the 'leader' (L1) in a 3-phase system.
In a parallel system, the step-1 setting of DIP sw itches ds8 to ds3 need to be done on the master only. The slaves w ill follow
the master w ith regard to these settings (hence the master/slave relationship).
In a 3-phase system, a number of settings are required for the other devices, i.e. the follow ers (for phases L2 and L3).
(The follow ers, therefore, do not follow the leader for all settings, hence the leader/follower terminology).
•
A change in the setting 'stand-alone / parallel / 3-phase' is only activated after the setting has been stored (by pressing the
'UP' button for 2 seconds) and after all devices have been turned off and then on again. In order to start up a VE.Bus system
correctly, all devices should therefore be turned off after the settings have been stored. They can then be turned on in any
order. The system w ill not start until all devices have been turned on.
•
Note that only identical devices can be integrated in one system. Any attempt to use different models in one system w ill fail.
Such devices may possibly function correctly again only after individual reconfiguration for 'stand-alone' operation.
DIP sw itches ds2 and ds1 are reserved for the selection of stand-alone, parallel or
3-phase operation
The combination ds2=on and ds1=on is not used.
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