IOTA IQ-AGM User manual

The IOTA IQ-AGM Charge Controller installs by sim-
ply plugging the IQ cord into the Dual Voltage jack lo-
cated on the DLS* (Refer to Figure A). The IOTA IQ-
AGM circuitry is then automatically engaged. Note:
the cord provided is specifically designed for use
with the IOTA IQ-AGM. Do not use the IOTA IQ-AGM
with any cord other than one supplied with the unit.
Smart Charge Controller
OWNER’S MANUAL
12-VOLT / 24-VOLT
13.6 / 27.2
14.7 / 29.4
BULK / FINISH
The IOTA IQ-AGM Charge Controller is designed for automatic charging control for DLS Battery
Chargers with AGM battery applications, providing enhanced battery charging and maintenance.
The IOTA IQ-AGM allows the DLS Charger to operate as an automatic “smart charger” that gives
the customer the benefit of automatic Bulk/Finish, Float, and Maintenance cycles. Multi-stage
charging with the IQ-AGM increases the charging capacity of the DLS charger, decreases the
charge time, and ensures a maintained and full battery charge. The IOTA IQ-AGM monitors the
battery at all times. If the DLS voltage remains in the Float stage for seven days, the IOTA IQ-AGM
will automatically initiate the Maintenance Cycle for a predetermined time to help maintain the
battery, and then resume Float Stage charging. ATTENTION: While the IQ-AGM is designed
to accommodate most AGM batteries, always refer to the manufacturer’s specifications
for your battery’s allowable charging parameters.
INSTALLATION
The LED Indicator on the IQ informs the user of the DLS charging state and the battery charge
status. When first activated, the IQ will read the number of cells in the battery and indicate the
voltage of the battery through a number of flashes. Refer to Figure C.
LIT/FLASHING LED - After detecting the battery, the IQ-AGM will initiate a Bulk/Finish Charge
phase. When the IQ-AGM is in the Bulk/Finish Charge mode, the green LED indicator will flash
rapidly (approx. 2 flashes per second). When the Bulk/Finish Charge is complete, the IQ-AGM
will begin the Float Charge phase and the LED will remain lit (no flashing). Refer to Figure B for
Charge Stage descriptions.
Figure B: Charge Stage Descriptions
OPERATION AND LED INDICATOR REFERENCE
BULK / FINISH
FLOAT
MAINTENANCE
The Bulk State charges the battery at the
full-rated output of the charger, reducing
the time it takes to charge the battery, then
holds it for a predetermined ‘finishing’ period.
Once the battery has been fully charged,
the Float State maintains a full charge to the
battery, and reduces the chances of “gassing.”
If the battery has remained in the Float State for
7 days, the IQ automatically provides reinitiates
a bulk charge to ensure the battery remains in a
completely charged condition.
P.O. BOX 11846 TUCSON, AZ 85734
[phone] • FAX [phone]
www.iotaengineering.com
Figure C: LED Code Table
DUAL VOLTAGE JACK
IQ CHARGE CONTROLLER
FIGURE A. IQ INSTALLATION
*Location of the Dual Voltage Jack may vary depending on
the DLS Model.
AGM

BULK / FINISH STAGE - During this state, the charger will operate either at Full Current output or
Constant Voltage output depending on the discharged state of the battery. A discharged battery will
dictate the voltage and force the charger into constant-current operation. As the battery charges,
the charger transitions to a constant-voltage operation.This BULK / FINISH STAGE will continue for
up to 480 minutes. At this point, the IQ-AGM will switch to the FLOAT STAGE.
FLOAT STAGE - This charge state holds the batteries at Constant Voltage for a period not longer
than seven days. During this state, the charger not only floats the batteries, but it can also provide
load current up to its maximum rating for other loads without depleting the battery capacity. The
FLOAT STAGE will end when either the battery voltage drops below the “Low Trigger” point or at the
end of 7 days when the IQ-AGM initiates the MAINTENANCE stage to ensure a complete charged
condition. In either situation, the unit exits the FLOAT STAGE and enters the BULK/FINISH STAGE.
FAULT STATE - If the IQ enters a FAULT state, its circuitry is automatically disabled. In this state,
the functionality of the IQ is completely disabled, the LED will flash irregularly, and the charger re-
verts to a stand-alone FLOAT STATE voltage. The unit will not exit this stand-alone FLOAT STATE,
therefore the unit must be reset by following the steps below.
1. Unplug the charger from its AC source.
2. Disconnect the [+] positive cable from the battery.
3. Wait 30 seconds before reconnecting the input and output. To avoid arcing, it is recom-
mended that the charger be connected to the AC input FIRST before connecting the output
of the charger to the battery*.
*Note that the connection sequence of the input and output covered above is recommended every
time an operator connects the charger to the batteries. However, as long as the charger remains
connected to the battery, periodic unplugging of the AC input does not require this sequence.
The LED indicator will remain lit or flashing when the charger is unplugged or disconnected from
the AC supply (de-energized). During this time, the IQ continues to monitor the battery voltage. If
the battery voltage drops below a pre-determined voltage (Refer to Figure D for predetermined val-
ues), the IQ will automatically initiate the smart-charging cycle once the AC input is re-connected.
IRREGULAR FLASHING LED - If the LED is flashing irregularly or intermittently, then the IQ has
entered a FAULT state due to a voltage irregularity. When this occurs, the IQ must be re-set in order
to resume normal operation. Refer to the FAULT STATE instructions below for re-setting procedures.
OPERATION AND LED INDICATOR REFERENCE (cont.)
CHARGING STAGE DESCRIPTIONS
Figure D: Predetermined Stage Trigger Values
68412-113 REV 1800
PREDETERMINED VARIABLES FOR OPERATION
Battery
Voltage
12V
24V
BULK / FINISH
14.7V
29.4V
FLOAT
13.6V
27.2V
LOW
TRIGGER
12.8V
25.6V