When calibration is finished, press OK to save, or, if required press Repeat to repeat.
6. eCCR CONTROLLER
ECCR AV1 controller manages the solenoid and supports the preset setpoint based on the
information received from Oxygen cells.
6.1 eCCR AV1 Controller Functions
Oxygen is supplied by the solenoid in cycles: every 5 seconds – fixed pause, and 0.2-20
seconds – Oxygen supply.
Time of Oxygen supply is calculated by the controller and depends on several factors:
difference between the setpoint and O2 level change in the loop (proportional share);
O
2
level change speed in the loop (differential share);
weighted error time (integral share).
eCCR AV1 controller can work with any solenoids: normal-closed, maximal operative current
– not more than 500 mA and maximal voltage when the solenoid is safely & reliably opened
is not more than 5V.
eCCR AV1 controller does not support redundancy system (Master-Slave) to manage the
solenoid, though it is possible to use the second AV1 computer with Fischer-connector for
redundancy monitoring of Oxygen cells’ operation. In case if the main controller fails, this
configuration allows you to finish your dive with manual Oxygen supply into the rebreather
loop.
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