The failsafe actuator is currently designed to operate quarter-turn valves, in areas
of the ship that comply with location class A for temperature.
When installing the failsafe actuator there are certain aspects to consider. Due to
it being a solution with a battery, it cannot sit without external power after
installation for an unlimited time. The product comes with the battery not
connected, and in this way if stored properly, the battery can be without power
for up to 6 months. When installed, the product enters service state and has
deep sleep mode giving a battery lifetime of up to 2 months. This state is cleared
during commissioning. The actuator is then NOT able to go back to deep sleep
mode unless the battery and power connector is detached and attached again.
But it can be put in service mode and idle mode, giving up to 1 week of battery
lifetime.
Based on this information, Eltorque recommends and accepts two ways of
installation.
1. The actuator is installed without the battery connected, not commissioned
and the power is removed for a longer period.
a. The battery is stored in a suited location awaiting permanent power feed.
The battery is installed at a later stage, but no longer than 2 months from
permanent power supply. The battery needs to be charged according to
the required specifications if storage is over the recommendations.
b. If the storage conditions when mounted on the actuator is within the
recommendations, the battery can be installed, but not connected in the
actuator. This solution requires the battery to be connected and charged
within 4 months.
2. The actuator is installed with the battery, is commissioned and the power is
kept on, or as a minimum the power is turned on and the battery recharged
every week. Alternatively, this solution can be used for up to two months if
the actuator is in deep sleep mode.
Eltorque recommends that, independent of the battery status, the battery is
replaced every 5 years during classifications to secure proper functionality when
needed.
All deviations to ideal conditions reduces the battery life time.
For the failsafe unit (with actuator or as standalone) the following storing
conditions are recommended
• The storing temperature should be 15°C/59°F.
• Battery must be fully charged before storage.
• The battery should be charged with CC/CV charging algorithm (900mA
constant current (CC) up to 14.7V. When the charging voltage reaches 14.7V
keep the voltage constant (CV) and stop charging when the charging current
reaches 90mA or after 32 hours total CC/CV charging time
To Next Page
Loading...
Need help?
General
