IOTA DLS 27-15 User manual

27VDC DLS SERIES
POWER CONVERTER/CHARGER
OWNER’S MANUAL
TheDLSseriespowerconverter/batterychargerfromIOTA
Engineering converts nominal A.C. voltage to volts D.C.
As a power supply, its tightly controlled regulation al-
lows the user to operate any appropriate nominal D.C.
load up to the converter’s rated outputcurrent. As a bat-
tery charger, the converter will maintain the battery, de-
livering its full-rated current when the battery capacity
falls sufficiently low. The voltage is set to deliver its
maximum current for the necessary period of time that
minimizes undue stress to the battery caused by heat-
ing of its cells. This helps to ensure the longest pos-
sible life of the battery. Over time, as the battery nears
its full capacity, the converter will float-charge the bat-
tery to prevent self-discharge of its cells.
PROTECTION FEATURES
TheDLSseriespowerconverter/batterychargerisdesigned
withhigh quality components to help ensure years of con-
tinuous use. The DLS series is protected by multiple pro-
tection features for a long, trouble-free life.
1) Reverse Battery Polarity Protection. 2) Brown-Out
Input Protection. 3) Over-Current Protection - cycle
by cycle peak limiting as well as rated current limiting
to maximize the life of the converter. 4) Over-Tem-
perature Protection. In addition, it is designed with a
unique “proportional” fan control circuit. Fan speed is
directly proportional to the converter’s internal ambi-
ent temperature. This enables the fan to turn on and
off very slowly, minimizing unwanted fan-starting noise.
The DLS series power converter/battery charger is war-
ranted from defects in materials or workmanship for two
yearsfromdateofretailpurchase,andlimitstheremedies
to repair or replacement. This warranty is valid only in the
continentalUnited States and Canada. For complete war-
ranty details, consult Customer Service or visit
www.iotaengineering.com.
WARRANTY
27.2 V (DC)
+ or - .5%
15 Amps
>27.0V (DC)
400 Watts
<50 mV rms
108 - 132 AC
47-63
7.0 Amps
>80%
8 Amps
Yes
>100%
100 mV rms
<1%
PROPORTIONAL
YES
0 - 40C
-20 to 80C
1240V @ leads
7″x 6.5″x 3.5″
5.5 lbs
DC Output Voltage (No Load) approx.
Output Voltage Tolerance (No Load)
Output Amperage, Max Continuous
Output Voltage (Full Load) approx.
Maximum Power Output, Continuous
Ripple and Noise
Input Voltage Range
Input Voltage Frequency
Maximum AC Current
Typical Efficiency
Max Inrush Current, Single Cycle
Short Circuit Protection
Overload Protection
Line Regulation
Load Regulation
Fan Control*
Thermal Protection
Working Temperature Range
Storage Temperature
Withstand Voltage
Dimensions**
Weight
27.2 V (DC)
+ or - .5%
25 Amps
>27.0 V (DC)
675 Watts
<50 mV rms
108 - 132 AC
47-63
11.6 Amps
>80%
16 Amps
Yes
>100%
100 mV rms
<1%
PROPORTIONAL
YES
0 - 40C
-20 to 80C
1240V @ leads
7″x 6.5″x 3.5″
5.5 lbs
DLS 27-15 DLS 27-25 DLS 27-40
27.2 V (DC)
+ or - .5%
40 Amps
>27.0 V (DC)
1100 Watts
<50 mV rms
108 - 132 AC
47-63
20 Amps
>80%
20 Amps
Yes
>100%
100 mV rms
<1%
PROPORTIONAL
YES
0 - 40C
-20 to 80C
1240V @ leads
10″x 6.5″x 3.5″
7.8 lbs
Distributed By:

TWO-STEP VOLTAGE JACK
The two-step voltage jack (located on the top of the DLS on
thefan-endoftheunit)allowsswitchingfrom along-termfloat
voltage to an increased quick-charge voltage. When the in-
cluded dual voltage plug is inserted in the jack, the voltage
increases for faster charging. When the plug is removed, the
voltage drops to rated nominal voltage to reduce battery wa-
terloss.WARNING: To avoid battery damage, remove the
Dual Voltage Plug when quick-charging is complete.
There are no components within the DLS unit that, in their normal operation, produce arcs or sparks.
However, all electronic devices have some potential for generating sparks in the event of failure. Therefore,
never install this device in the same compartment with flammable items such as gasoline or batteries.
INSTALLATION GUIDELINES
MOUNTING LOCATION
The DLS battery charger/power supply can be mounted in
any position within an enclosed or interior compartment.
Provide sufficient air space to allow unrestricted airflow in
and around the unit.
DLS INSTALLATION
Disconnect the positive side of the battery before installation.
Connectthe positive(red)andnegative(black)terminallugs to
battery or load. Always use the proper size wire based on the
amperageoftheconverterandthebattery.Whenconnectingto
abattery,abreakershouldbeinstalledwithin18”ofthebattery,
connecting the battery positive to the line side of the breaker,
and the DLS to the load side. Connect “Chassis Bonding Lug”
on the DLS to vehicle chassis or other grounding source.
120 VOLT A.C. INPUT
Plug the DLS A.C. input cord into a 120 volt 3 wire
groundedsource.Seechartformaximumcurrentdraw
andrequiredinputvoltages.
REVERSE POLARITY FUSES
The DLS Battery Charger/Power Supply is protected
againstreverse polarityonthe DCoutput.Ifabattery or
the DLS is hooked up incorrectly, the fuses will blow
andcan be easily replaced. Always use the same size
andstylefuse thatcamewith theconverter.Tochange
the fuses, use a screwdriver to loosen the screws and
remove the fuses. Always replace the fuses with the
same type and rating. After inserting the new fuses,
tighten the screws firmly. DO NOT OVERTIGHTEN.
CHARGE CONTROLLER OPTIONS
IQ SMART CHARGER
DLS power converters/chargers are designed to accom-
modate the IQ smart charge controller. The microproces-
sor-controlledchargerturnstheDLScharger into an “auto-
matic” 3-stage “smart charger,” giving the user the benefit
of Bulk, Absorption, and Float stage charging. This in-
creases the charging capacity of the DLS charger, de-
creases charge times and insures proper and safe battery
charging without over-charging. The IQ controller inserts
into the dual voltage jack on the DLS.
ChargeController Optionsare designedforDLS unitsthat DONOT havethe IQSMART CONTROLFEATUREinternally
integrated.For units that feature an internal IQ controller, the Dual Voltage Jack is disabled.
68357-027
REV 102804