Measurement Computing ZonicBook 618E rev.3.4 - Manual (Page 110)

14 VDC Mode (default)
This mode provides 14 VDC for 3.4 A-hr. The typical battery runtime is from 3 to 6 hours depending on
the load. Unless 28 VDC is required, the 14 VDC mode should be used in ZonicBook/618E and WBK18
applications.
Unless you need 28 V, leave the unit in the 14 VDC mode. Use of the 28 VDC mode results in
a lower runtime, as only one battery pack can be used for 14 VDC. When in the 14 VDC mode,
both packs are used in parallel, resulting in a longer runtime for the same application.
28 VDC Mode
The 28 VDC mode actually provides both 14 VDC and 28 VDC. Loop currents for two-wire, 4-20 mA
transmitters (1.7 A-hr) require 28 VDC. The battery run-time ranges from 1 to 6 hours, depending on
system configuration. In this mode, 14 VDC is used for unregulated bridge excitation (for bridge-
configured sensors, such as load cells), and power to WBK expansion products.
Unless you need 28 V, leave the unit in the 14 VDC mode. Use of the 28 VDC mode results
in a lower runtime, as only one battery pack can be used for 14 VDC. When in the 14 VDC
mode, both packs are used in parallel, resulting in a longer runtime for the same application.
Hardware Setup
Configuration
The only configuration option is the choice of modes (14 VDC, or 28 VDC). If you do not need 28 V,
leave SW2 in the default position.
If you are using a pre-owned DBK30A, or are unsure of the mode selected, use the
following steps to check SW2’s position. Note that new units are always shipped with SW2
selected to the 14 VDC mode.
C-2 Power Options 977995 ZonicBook/618E User’s Manual