Eltorque QT250 User Manual

Page 66 of 88
User Manual QT series generation 2.5, ID 2021, rev 3.2, January 14, 2022
1. Connect the battery when installing (see Table 11, pos 4 for
estimated battery lifetime)
2. The battery is Not connected until a later stage (see Table 11, pos 3
for estimated battery lifetime)
B. Install the actuator without the battery mounted in the module of the
installed product. The battery is removed from the product, following
the procedure in section 11.8.2 steps 1-9 and stored as described in
section 11.3.5 Storage on page 67. The battery needs to be installed at a
later stage when external power is available. The battery needs to be
charged according to the required specifications.
Table 11: Battery lifetime
State
Battery lifetime
Battery not connected:
1) Shipping from Eltorque AS
2) External Storage
3) Installed on vessel
− Up to 6 months
− Up to 6 months
− Up to 3 months
Battery Connected:
4) Deep sleep state
5) Service state
6) Failsafe State
− Up to 50 days
− Up to 12 days
− Up to 36 hours
Note! Estimated battery lifetime is calculated based on the most common scenario
but will vary based on factors such as temperature.
The failsafe option offers a safety aspect in terms of operation after a
failure. As there are an internal battery and onboard management, it is
possible to preprogram the actuator to move to the predefined safest
position when contact with the actuator is lost.
The failsafe function supports the following protocols:
• Fail-maintain: The actuator keeps the position.
• Fail-to-open: The actuator moves to the valve open position.
• Fail-to-close: The actuator moves to the valve closed position.
It is not possible to have different protocols for different types of errors.
Note! The actuator cannot activate any other command when the failsafe protocol
has been initiated, even during the pre-set timeout counter.
The product is certified with a yearly required battery discharge test. To
keep the product in a certified state, a plan for both performing and
executing this discharge test must be created. Due to the possibility that the
class and the certificate have different requirements, the strictest of the two
shall be followed and testing performed according to those requirements.
The purpose of this discharge test is to establish the real battery capacity
(SOH) safely. Please refer to section 11.8.1 Battery discharge and charge on
page 74 for instructions on how to perform this test.

Eltorque QT250 Specifications

General

Brand	Eltorque
Model	QT250
Category	Controller
Language	English