3
2. Battery Failsafe Specification continued
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
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 - Tri-colour LED
indication in IQT main display* fig 2
• Red—Battery
charge
depleted
< 80%—Boost charge
• Amber—Battery charge low 80%
to 100%—Overcharge charge
• Green—Battery fully charged—
Float charge
* AC Power ON indication. When
AC supply is OFF, LED status
indication is approximate due to
termination of battery charging.
Protection :
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 E175E for
IQT range maintenance.
3. Failsafe Commissioning
Instructions
Before commissioning the
failsafe operation it is essential
that the IQT actuator has first
been commissioned in
accordance with publication
E175E - IQT Range Installation
and Commissioning Instructions.
1. Remove cover.
Figure 3
Ensure the AC power supply to the
actuator is switched OFF.
Using a 6mm allen key remove the
four screws securing the IQT battery
failsafe cover and remove cover
from actuator housing. The cover
Fig. 2
Fig. 1
