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IQT Battery Failsafe continued
10
10.2 Battery Failsafe Specification
Environmental:
Operating temperature -30°C to + 60°C.
Enclosure (IQT battery Failsafe actuator):
Watertight IP68 — 7m / 72 Hrs.
Battery Pack:
Type: Sealed lead–acid batteries located
in a vented enclosure.
Voltage & Capacity: 28V — 2.5Ah.
Float life: 8 Years at 20°C, 3 years at
40° C.
Storage Life: 2 years at 23°C, 2 months
at 60° C.
Battery pack assembly weight: 5.5Kg.
For total IQT battery failsafe weight,
add 5.5Kg to the actuator weights
listed on page 80.
Charger :
The IQT battery failsafe is despatched
with the batteries in a charged state,
however once the IQT is connected to
AC power the batteries will automatically
begin charging to bring them to the
float charge state. For correct battery
charging, the IQT supply voltage must
not be less than 90% of nominal.
Charging Time — typically 4 hours
from a discharged state (depending on
ambient temperature).
Charge state — The lower line of text
wll display the state of the battery, see
fig.2.
On loss of AC power, the state of the
battery is not displayed.
DC power supply — Fuses FS 3 and FS4
are rated at 20A, automobile type ATO
Fast acting.
Charge/control — Fuses FS1 and FS2
are rated 2A, 20mm quick blow.
The battery supply will auto disconnect
at 20V or 30 minutes after AC supply is
removed from the actuator to prevent
damage caused by deep discharge of
batteries.
Maintenance :
Ensure the two vents located in the
battery pack cover are not removed,
plugged or covered. The batteries are
sealed lead acid type and require no
maintenance. Refer to section 11, page
67 for IQT range maintenance.
Failsafe Operation Performance:
Number of operations at 75% rated torque.
Temperature °C IQT125 IQT250 IQT500 IQT1000 IQT2000
-30 15 12 6 3 1
-20 50 40 20 10 5
-0 63 50 25 12 6
20 75 60 30 15 7
40 75 60 30 15 7
60 75 60 30 15 7
Fig. 2
Fig. 1
IQT Battery Failsafe Actuator Display
FS Ready
FS Boost Charge
FS Charging
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