SLICE PRO Ethernet Controller User’s Manual
May 2019
10
13000-30610-MAN (Rev. 5)
Power Management
A good power source is of paramount importance. Each SLICE PRO Ethernet Controller
should be powered from a high-quality 15 V power supply with a current rating of at least 5 A
for a fully-powered, 4-module SLICE PRO system. Be sure to consider any power drop due
to cable length. Always remember:
•
To ensure the internal batteries are fully charged, the minimum input voltage received
by the Ethernet Controller at its power input connector must be 11.5 VDC.
•
DTS always recommends using an external power source during set-up and check-
out. This will ensure that the internal batteries on all units are always fully charged.
Input Voltage,
System OFF/ON
Input Current,
System OFF*
Input Current,
System ON**
11.5-15 VDC;
15 VDC nominal
7.5 W;
500 mA per module***
15 W;
1 A per module***
* charging all internal batteries
** fully armed + charging all internal batteries
*** Ethernet Controllers are considered modules for the purposes of power calculations.
SLICE PRO LAB systems do not contain internal batteries and must be connected to external
power at all times (15 VDC nominal; 9-15 V range at 40 W).
Power Consumption
Power off
: When connected to sufficient external power, the Ethernet Controller will draw up
to 500 mA for charging its internal battery and 500 mA per module for charging the internal
batteries of connected SLICE PRO modules.
Power on
: When an Ethernet Controller is initially powered, all sensor excitation sources,
signal conditioning electronics, filter circuits and analog-to-digital converters are in a
shutdown state. The processor and support circuitry are always powered. The processor
will remain in a reduced power state when not performing tasks. When the user runs a test
set-up, the software automatically energizes the excitation sources and other circuits. The
current draw per module will increase to as much as 1 A when the system is fully armed and
powering full-bridge loads.
During data collection
: Once the system has been armed for data collection, all circuits
remain in a full power state until data collection is finished. After the data collection routine
has completed, the system de-energizes several circuits to minimize power consumption.
Internal Battery
The Ethernet Controller contains an internal 7.4 V (nominal) lithium battery that operates as
primary power or back-up power should primary power fail. When fully charged, battery
capacity is sufficient to provide primary power and sustain full operation for 1 hour. If input
power fails, each unit in the SLICE PRO system will transition to its own internal battery
—the
Ethernet Controller will
not
power the connected SLICE PRO modules. The internal battery
charges whenever sufficient external power is connected. The maximum charge time is
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