
DCW20
User Manual rev. 5
Page 3/34
1
Product description ........................................................................................................................................... 5
2
Features and benefits ....................................................................................................................................... 6
3
Functional description ...................................................................................................................................... 6
3.1
UPS mode .................................................................................................................................................. 7
3.1.1
Backup ................................................................................................................................................. 8
3.1.2
Battery health monitor .......................................................................................................................... 8
3.1.3
Battery charger ..................................................................................................................................... 9
3.1.4
Coulomb counter ................................................................................................................................ 10
3.1.5
PC shutdown and automatic restart ................................................................................................... 11
3.1.6
Cold start ............................................................................................................................................ 12
3.2
DC/DC mode ............................................................................................................................................ 12
3.2.1
Parallel operation ............................................................................................................................... 13
3.3
Current limit .............................................................................................................................................. 14
3.3.1
Current limit in UPS mode .................................................................................................................. 14
3.3.2
Current limit in DC/DC mode.............................................................................................................. 14
3.4
Inhibit ........................................................................................................................................................ 14
3.5
Modbus ..................................................................................................................................................... 15
4
User interface ................................................................................................................................................. 19
4.1
Status ........................................................................................................................................................ 20
4.2
Settings ..................................................................................................................................................... 20
4.2.1
Modbus address ................................................................................................................................. 21
4.2.2
Modbus baudrate ............................................................................................................................... 21
4.2.3
Modbus parity ..................................................................................................................................... 21
4.2.4
Modbus stop bits ................................................................................................................................ 21
4.2.5
Battery type ........................................................................................................................................ 21
4.2.6
Battery charge voltage ....................................................................................................................... 21
4.2.7
Battery charge current ........................................................................................................................ 21
4.2.8
Battery float voltage ........................................................................................................................... 22
4.2.9
Battery low voltage ............................................................................................................................. 22
4.2.10
Battery deep discharge voltage ...................................................................................................... 22
4.2.11
Battery max. discharge current ....................................................................................................... 22
4.2.12
Battery capacity - Supercap capacitance ....................................................................................... 22
4.2.13
Battery min. temperature ................................................................................................................ 22
4.2.14
Battery max. temperature ............................................................................................................... 22
4.2.15
Battery lifetime ................................................................................................................................ 23
4.2.16
Ri alarm mode ................................................................................................................................. 23
4.2.17
Ri nom. ............................................................................................................................................ 23
4.2.18
Ri max. variation ............................................................................................................................. 23
4.2.19
Operating mode .............................................................................................................................. 23
4.2.20
Nominal output voltage ................................................................................................................... 23
4.2.21
Max. input current ........................................................................................................................... 24
4.2.22
Max. output current ......................................................................................................................... 24
4.2.23
Max. Backup time enable ............................................................................................................... 24
4.2.24
Max. backup time ............................................................................................................................ 24
4.2.25
Buzzer enable ................................................................................................................................. 24
4.2.26
Relay 1 configuration ...................................................................................................................... 25
4.2.27
Relay 2 configuration ...................................................................................................................... 25
4.2.28
Inhibit polarity .................................................................................................................................. 25
4.2.29
DC/DC output mode ........................................................................................................................ 25
4.2.1
Output enable ..................................................................................................................................... 25
4.2.1
Aux enable ......................................................................................................................................... 26
4.2.2
PC shutdown enable .......................................................................................................................... 26
4.2.3
PC automatic restart enable............................................................................................................... 26
4.2.4
PC shutdown delay ............................................................................................................................ 26
4.2.5
PC shutdown time .............................................................................................................................. 26
4.2.6
PC restart minimum time .................................................................................................................... 26
4.2.7
PC off detection current threshold ..................................................................................................... 26
4.2.8
PC off detection timer ......................................................................................................................... 27
4.2.9
Battery installation date ...................................................................................................................... 27
DCW20_040-02-700-005-EH-1117