Power One PODS 16.48-16000 1940 HEX, Instruction Manual, Page: 59 / 170

Operation / Product description PCS 2 8-13
Document number: 036777.fm
Revision: B
Operation / Product description PCS 2
Parameter Settings.
The parameter settings feature allows for the partial discharge of the batteries (approx. 30-40% of the
capacity) in order to test the batteries for errors. The settings should be done according the battery
manufacturer requirements, however, the following settings can be used for standard VR lead batteries:
U3 = 1,9 V/cell
End voltage = 1,94V/cell
Time = 100% of expected backup time
Ah = 40% of nominal battery capacity
Parameters to be set/adjusted from the "battery test" menu or PC with PowCom installed.
Battery test voltage:U3 0- 100 Volts
Symmetry limit: 0.0 - 4.0 Volts
Test end voltage: 0-100 Volts
Test duration: 0- 20 hours
Ah limit: 0- 50000 Ah
Time of test: 0 - 23 (0=midnight)
No of test/year: 0 - 4
No of batteries: 0 - 12
Battery type: 4 blocks, 23 cell-, 23 cell+, 3 blocks or 2 blocks
Number of batteries must be equal to number of symmetry measurements. If symmetry cables are not in
use, number of batteries must be set to 0 (zero).
8.4.5 Battery current limit
Battery current can be controlled by the PCS 2. The PCS 2 will adjust the rectifier current limit so that the
total rectifier current may not exceed "load c desired battery current". Rapid changes in load current
will lead to changes in battery current, due to this variation the current can be above the limit for a limited
time.
In the PCS 2 you can set the battery current limit from 5A to 3000A.
There is also a function to enable or disable the function all together.
8.4.6 Temperature compensation
The supervisory module can adjust the charging voltage to compensate for temperatures above or below
20oC. T > 20oC lower charging voltage. T < 20oC higher charging voltage.
The temperature compensation function can be enabled and disabled and the level of compensation is
adjustable.
8.4.7 High load
The "High Load" alarm is activated when the load current exceeds the capacity of the installed modules
multiplied by the high load limit. This is an indication that the system requires increased rectifier capacity.