Deep SUNA Manual
For SUNA running firmware version 2.4 or later
3. The SUNA Sensor
3.2.2 Electrical Specification
The SUNA requires power in the 8–18 VDC range with a supply current of 1 A. Power
consumption depends on the operating state. During data acquisition, it is typically 7.5
W (±20%). In standby, at the command prompt, the current draw is around 20 mA.
Polled and APF operating modes will time out after a configurable time of inactivity,
bringing the SUNA processor into a low power state with a consumption below 3 mA. In
fixed-time operation and between periodic operation event, power control is handed to a
supervisor circuit, which reduces power consumption to less than 30 μA.
Table 4: Power requirements
State
Voltage
Current
Supervised Sleep
8–18 VDC
< 30 μA
Processor Sleep
< 3 mA
Standby
~20 mA at 12 V
Sampling
~625 mA at 12 V (nominal)
The SUNA connector is a SubConn MCBH8MNM. With a face view numbering as in the
following illustration, the pin assignments are listed in the following tables.
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Illustration 3: SUNA SubConn MCBH8MNM bulkhead connector face view.
