Securitron AQM20-16C, AQM20-16F, AQM20-8C, AQM20-8F8R, AQM20B User Manual

Installation Manual AQM-20 12vdc/24vdc Series Power Supplies

Securitron Magnalock Corporation
10027 S. 51st St., Ste. 102

Phoenix, AZ 85044

Doc.# 500-33010 Rev. B, Installation specifications subject to change without notice

Phone: (800) MAGLOCK

[e-mail]

www.Securitron.com

AQM20

20A 12/24 Power Supply/ Charger Module
mounted in a 14” x 14” metal Enclosure.

-8F

AQM20 with PDB-8F (fuses) Distribution
Module

-8C

AQM20 with PDB-8C (circuit breakers)
Distribution Module

-16F

AQM20 with two PDB-8F (fuses) Distribution
Modules

-16C

AQM20 with two PDB-8C (circuit breakers)
Distribution Modules

-8F8R

AQM20 with Smart Fan and PDB-8F8R
Supervised Distribution Module (Fuses)

-8C8R

AQM20 with Smart Fan and PDB-8C8R
Supervised Distribution Module (circuit
breakers)

AQM20 Supervised Power Supply/Charger 12vdc 20Amp/24vdc 10Amp

Life Time Warranty – Quality Manufactured in the USA

AQM20 Features:
 The AQM20 has two 12vdc 8Amp rated Outputs

that can be connected in Parallel or Series to
provide 12vdc, 24vdc, or 12vdc & 24vdc.

 Outputs 1 and 2 are fully isolated,

Independent Power Supplies.

 Efficient Off-Line Switching Power Supply
 Self Contained, No External Transformer

required

 120/240VAC Selectable AC input
 Extraordinary Brown Out Capability
 Precise Battery Regulation for Lead Acid

Battery(s)

 LED’s Indicate AC and DC Outputs 1 & 2
 Relay Contacts Indicates AC Power Status
 Battery Online, No Drop or Switch Over

with AC Power Fail

 Auto Resetting circuit breaker for battery(s)

Over Current Protection with Reverse battery
protection

 Electronic Power Limited and Short Circuit Protection

on each output

 Each output has Thermal shut down with auto restart

Partial list of ordering examples:

Description

The AQM20 supervised power supply with battery
charger is two high powered, fully isolated, independent
power supplies enclosed in one small self contained
aluminum package. Each power supply, outputs 1 and
2, are a nominal 12vdc at 10 Amps with 12v lead acid
battery charger. These outputs can be used as
separate isolated 12vdc power supplies, or they can be

connected in parallel or series to provide 12vdc, 24vdc
or both 12vdc and 24vdc at the same time. When
outputs 1 & 2 are connected in parallel, the output is

13.75vdc at 20 Amps. When outputs 1 & 2 are
connected in series, the output is 27.5vdc at 10 Amps.
Because each output is independently regulated, you
may draw additional current from the 12V output 1,

Page 1 of 9

AQM20 Series Installation Instructions

Output Terminal Block Configurations

-1+ -2+

BAT

BAT

-12VDC+

-12VDC+

OUT-1 OUT-2

DC-2

DC-1

-1+ -2+

BATBAT

-12VDC+-12VDC+

OUT-1 OUT-2

DC-2DC-1

-1+ -2+

BATBAT

-12VDC+

-12VDC+

OUT-1 OUT-2

DC-2

DC-1

12VDC

+

_

24VDC

8 Amps

_

+
_

+

+

12VDC

24VDC

COM

8A le s s 1 2 V a m p s

8A le s s 2 4 V a m p s

Fig 3 24VDC 8A Fig 4 12VDC & 24VDC

-1+ -2+

BATBAT

-12VDC+

-12VDC+

OUT-1 OUT-2

DC-2DC-1

Fig 1 2-12VDC 8A

12VDC 8A

12VDC 8A

+

+

_

_

Fig 2 1-12VDC 16A

16A

16" of 18awg

16" of 18awg

16" of 18awg

16" of 18awg

The 16" 18 gauge
wires shown below
are needed for the
outputs to share
the load when
connected in parallel
for full power.

while using the 24vdc output at the same time. The
12v current used has to be subtracted from the 10
Amps available on the 24vdc. Figures 1 - 4 illustrate
each of these four hookups for the SPS-20. Charging
two 12v batteries independently is also a very big
benefit for long battery life.

Specifications/Instructions

AC Input: L, N, G - 3P Terminal block

Safety Cover, snap or hinge is provided

L= Line, N= Neutral, and G = Ground
The G terminal must be connected to Earth Ground.

Optional 3 wire line cord P/N: ..................... HA-LC3SZIP

AC input/Hz/Watts default ...... 90-132vac/47-63Hz/400w

AC input/Hz/Watts (set 240) .. 133-250vac/47-63Hz/400w
UL evaluated at 60Hz 120/240vac

Caution: Never apply 240vac when AQM20 is set for
120vac this will void warrantee and damage unit.

The AC input default is 120vac. You can cut the PCB

trace marked “CUT 240” on the bottom of the PCB

under the input inductor above and toward the inside of
the AC input terminal block.

AC LED Indicator (Next to AC Input Terminal Strip)

The AC indicator is a bi-color green and red led. This
led off with AC at the terminals would indicate a blown
fuse link. A blown AC fuse link would indicate catastrophic

failure and must me returned to the factory for repair.

AC Status Output Relay: 3P Terminal block

AC fail “C” contacts ........................................ 2A/120vac

Three position AC fail terminal block marked “NO, C, NC” are

shown in the Normal, energized, AC ON condition.

DC OUTPUTS: 4P Terminal block (2 per output)

Output-1 & 2 continuous rating .............. 12vdc at 8A ea

Output 1 & 2 Typical Output Voltage .......... 13.72vdc ea

Load regulation no load to max ....................... .25%Typ

AC Line regulation 85-136vac/170-264vac ...... .03%Typ

Each Output ripple & noise at full load ............ 400mv pp

Current Overload Short Circuit Protection .............. Yes

Thermal runaway Protection .................................... Yes

Page 2 of 9

Current Overload and Thermal shutdown will auto­restart without removing load.

Ambient operating temperature range .. -30oF to +130oF

Storage Temperature ............................. -60oF to 190oF

Switching Frequency .......................................... 66KHz

DC LED Indicator (Adjacent to each output pair) ......... Red

Battery Standby

Two 12” battery cable assemblies that plug from
AQM20 to battery are provided. Red (+) 12vdc,
Black (–)Neg.

Optional 36” battery cable (1) P/N: ............... WA-36IBAT

-Battery(s), any type of lead acid .......... 12v 4AH-100AH

Battery(s) recharge1 & 2 ................ 13.72vdc at 2A max

Battery(s) 1 & 2 recharge PTC self resetting ......... 1.04A

Battery(s) 1 & 2 discharge PTC self resetting ............ 8A

Battery)s) 1 & 2 Reverse hookup protection ............. Yes

In standby mode each battery is limited to 8 Amps of
continuous current. When both outputs are connected
in parallel, and standby current will be greater than 8
Amps, you must use 2 batteries connecting one to
battery 1 and one to battery 2. Paralleling (2) battery

cables to (1) battery will not double the current.

Review application note 3, Battery Standby table to
calculate battery size.

To estimate the recharge time in hours for depleted
battery(s), multiply the AH rating times 1.2. (AH x 1.2).
As an example, 2 12v 10AH batteries would take about
12 hours to re-charge.

Physical

AQM20 Module Dimensions .. 7.75”L x 4.17”W x 3.23”H

Height includes 7/16” standoffs

Mounting Holes Center to Center ........ 6.45”W x 3.41”H

AQM20 module only Weight ................................ 2.4lbs.

AQM20 (in Large enclosure) ................ 14” x 14” x 4.75”

AQM20Weight with enclosure ............................. 11.4lbs

Approvals

AQM20 meets requirements of . UL1950 3rd & EN60950

AQM20 is UL R/C .................................... UL603, UL294

AQM20 Installation Instruction: Doc.# 500-33010 Rev. B

AQM20 Series Installation Instructions

Total Output

Amps

4Ah Battery

Standby

7Ah Battery

Standby

12Ah Battery

Standby

24Ah

Standby

40Ah

Standby

.5A

5.5 Hrs

12 Hrs

20 Hrs

40 Hrs

65 Hrs

1A

2.5 Hrs

5 Hrs

9 Hrs

19 Hrs

32 Hrs

1.3A

2 Hrs

4 Hrs

7.2 Hrs

15.5 Hrs

24 Hrs

2A

1 Hrs

2 Hrs

5 Hrs

10 Hrs

15 Hrs

3A

.5 Hrs

1 Hrs

3 Hrs

6 Hrs

9.5 Hrs

4A

.5 Hrs

.8 Hrs

2 Hrs

4 Hrs

8 Hrs

5A

NA

.6 Hrs

1.4 Hrs

3 Hrs

7 Hrs

6A

NA

.4 Hrs

1 Hrs

2 Hrs

4 Hrs

Part Number

Description

AQM20

AQM20 Power Supply Charger Module Mounted in a 14” x 14” x 4.75” Enclosure

AQM20-8F

AQM20 with PDB-8F (fuses) Distribution Module

AQM20-8C

AQM20 with PDB-8C (circuit breakers) Distribution Module

AQM20-16F

AQM20 with two PDB-8F (fuses) Distribution Modules

AQM20-16C

AQM20 with two PDB-8C (circuit breakers) Distribution Modules

AQM20-8F8R

AQM20 with Smart Fan and PDB-8F8R Supervised Distribution Module (Fuses)

Maintenance

The power supply and stand by battery(s) should be tested at least once a year as follows:

1. Check LED’s for normal state. AC ON Green, DC #1 ON Red, and DC #2 ON Red.

2. Check output voltage with normal load. DC Output #1 and DC Output #2 should read between 13.60 and

13.80vdc.

3. Disconnect AC input. AC LED should be off, DC Output LED’s #1 and #2 should be ON.

4. Check DC Outputs #1 and #2 to be above 12.0vdc. This checks standby batteries to be operational. Sealed
lead acid batteries have a typical life of 3 to 5 years.

5. Re Apply AC and verify AC LED ON.

Battery Selection

The table below shows typical standby time in hours for various loads and batteries. The table works for either
12vdc or 24vdc. The AQM20 was evaluated at UL with a 7AH sealed lead acid battery with a 1 hour stand by.

Approximate Battery Standby Time Table with a reserve of 3 Amps for 5 minutes for Alarm

The recharge table below gives approximate recharge times for different loads and battery sizes. The table is based on
batteries depleted to battery cut-off and recharged back to approximately 90% capacity.

Ordering Guide with fuse sizes

CAUTION Reduce the risk of fire replace fuses as marked
Note: Keep a minimum space of ¼” between Power Limited Outputs and non Power Limited wiring

Page 3 of 9

AQM20 Installation Instruction: Doc.# 500-33010 Rev. B