Delta PMT-24V350W1AK Instruction Manual

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
1
PMT
Highlights & Features
– AC input range selectable by switch
– Full Aluminium casing for light weight and corrosion resistant
handling
– Built-in automatic fan speed control circuit
– MTBF > 700,000 hrs. as per Telcordia SR-332
– Short Circuit / Overvoltage / Overload / Over Temperature
Protections
Safety Standards
CB Certified for worldwide use
Model Number: PMT-24V350W1AK
Unit Weight:0.82 kg
Dimensions (L x W x D): 215 x 115 x 50 mm
General Description
The new PMT series of panel mount power supplies is the latest offering from one of the world’s largest power supply manufacturers
and solution providers - Delta. PMT-24V350W1AK offers a nominal output voltage of 24V with a wide operating temperature range
from -10°C to +70°C and can withstand shock and vibration (in accordance to IEC 60068-2-27 and IEC 60068-2-6 respectively). In
addition to features like overvoltage and overload protections, Delta’s PMT series of panel mount power supplies is unlike many other
brands in the same price level. The PMT series is designed for cost competitive markets without compromising the quality of the
components and product specifications. The series of products has an expected life time of 10 years and will have no output power de-
rating from 100Vac to 132Vac & 180Vac to 264Vac.
Model Information
PMT Panel Mount Power Supply
Model
Number Input Voltage Range Output V oltage Output Curr ent
PMT-24V350W1AK 90-132Vac, 180-264Vac
(Selectable by Switch) 24Vdc 14.6A
Model Numbering
CC Code
PM T –24V350W 1AK
□
Panel Mount Product Type
T – Enclosed
Output Voltage Output Power Single Phase No PFC Connector Type
K – Front Face Blank – Without connector cover
A –
With connector
cover

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
2
Specifications
Input Ratings / Characteristics
Nominal Input Voltage 100-120Vac, 200-240Vac (Selectable by Switch)
Input Voltage Range 90-132Vac, 180-264Vac (Selectable by Switch)
Nominal Input Frequency 50-60Hz
Input Frequency Range 47-63Hz
Input Current < 7.00A @ 115Vac, < 4.00A @ 230Vac
Efficiency at 100% Load > 87.0% @ 230Vac
Max Inrush Current < 50A @ 115Vac, < 60A @ 230Vac
Leakage Current < 3.5mA @ 240Vac
Output Ratings / Characteristics
Nominal Output Voltage 24Vdc
Output Voltage Tolerance ± 2% (initial set point tolerance from factory)
Output Voltage Adjustment Range 20.0-26.4Vdc
Output Current 14.6A
Output Power 350W
Line Regulation ± 0.5% typ.
Load Regulation ± 0.5% typ.
PARD (20MHz) < 150mVpp
Rise Time < 50ms @ nominal input (100% load)
Start-up Time < 1000ms @ nominal input (100% load)
Hold-up Time > 16ms @ 115Vac, > 20ms @ 230Vac
Dynamic Response (Overshoot & Undershoot O/P Voltage) ± 5% @ 10-50% load and 50-100% load
Start-up with Capacitive Loads 8,000µF Max
Mechanical
Case Chassis Aluminium
Case Cover Aluminium
Dimensions (L x W x D) 215 x 115 x 50 mm
Unit Weight 0.82 kg
Indicator Green LED (DC OK)
Cooling System Forced Cooling
Terminal M3.5 x 9 Pins (Rated 300V/20A)
Wire AWG 20-12

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
3
Environment
Surrounding Air Temperature Operating -10°C to +70°C
Storage -25°C to +85°C
Power De-rating > 50°C de-rate power by 2.5% / °C
< 100Vac de-rate power by 3% / V
Operating Humidity < 95% RH (Non-Condensing)
Operating Altitude 5,000 Meters
Shock Test (Non-Operating) IEC 60068-2-27, Half Sine: 50G for a duration of 11ms
,
3 times per direction, 18 times in total
Vibration Operating IEC 60068-2-6, Sine Wave: 10Hz to 150Hz @ 25m/S²
(2.5G peak); 90 min per axis for all X, Y, Z direction
Non-Operating IEC 60068-2-6, Random: 5Hz to 500Hz @ 2.09Grms
peak; 20 min per axis for all X, Y, Z direction
Pollution Degree 2
Protections
Overvoltage
< 32.4V, SELV Output, Latch Mode
Overload / Overcurrent < 25A of rated load current, Hicc-up Mode,
Non-Latching (Auto-Recovery)
Over Temperature Hicc-up Mode, Non-Latching
(Auto-Recovery when the fault is removed)
Short Circuit Hicc-up Mode, Non-Latching
(Auto-Recovery when the fault is removed)
Protection Against Shock Class I with PE* connection
*PE: Primary Earth
Reliability Data
MTBF > 700,000 hrs. as per Telcordia SR-332
Expected Cap Life Time 10 years (115Vac & 230Vac, 50% load @ 40°C)
Safety Standards / Directives
Electrical Safety TUV Bauart to EN 60950-1, UL/cUL recognized to
UL 60950-1 and CSA C22.2 No. 60950-1, CB scheme
to IEC 60950-1
CE In conformance with EMC Directive 2004/108/EC and
Low Voltage Directive 2006/95/EC
Material and Parts RoHS Directive 2011/65/EU Compliant
Galvanic Isolation Input to Output 3.0KVac
Input to Ground 1.5KVac
Output to Ground 0.5KVac

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
4
EMC
EMC / Emissions CISPR 22, EN 55022, EN 55011, FCC Title 47: Class B
Immunity to EN 55024
Electrostatic Discharge IEC 61000-4-2 Level 4 Criteria A
1)
Air Discharge: 15kV
Contact Discharge: 8kV
Radiated Field IEC 61000-4-3 Level 3 Criteria A
1)
80MHz-1GHz, 10V/M with 1kHz tone / 80% modulation
Electrical Fast Transient / Burst IEC 61000-4-4 Level 3 Criteria A1)
2kV
Surge IEC 61000-4-5 Level 3 Criteria A
1)
Common Mode2): 2kV
Differential Mode
3)
: 1kV
Conducted IEC 61000-4-6 Level 3 Criteria A
1)
150kHz-80MHz, 10Vrms
Power Frequency Magnetic Fields IEC 61000-4-8 Criteria A1)
10A/Meter
Voltage Dips IEC 61000-4-11 100% dip; 1 cycle (20ms); Self Recoverable
Low Energy Pulse Test (Ring Wave) IEC 61000-4-12 Level 3 Criteria A1)
Common Mode2): 2kV
Differential Mode
3)
: 1kV
Harmonic Current Emission NA
Voltage Fluctuation and Flicker* IEC/EN 61000-3-3
*Fulfills tested conditions
1) Criteria A: Normal performance within the specification limits
2) Asymmetrical: Common mode (Line to earth)
3) Symmetrical: Differential mode (Line to line)

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
5
Block Diagram

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
6
Device Description
1) Input & Output terminal block connector
2) DC voltage adjustment potentiometer
3) DC OK control LED (Green)
4) AC selectable switch
Dimensions
L x W x D: 215 x 115 x 50 mm

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
7
Engineering Data
De-rating
Output De-rating VS. Input Voltage
Note
1. Power supply components may degrade, or
be damaged, when the power supply is
continuously used outside the shaded region,
refer to the graph shown in Fig. 1.
2. If the output capacity is not reduced when the
surrounding air temperature >70
°C, the
device will run into Over Temperature
Protection. When activated, the output
voltage will go into bouncing mode and will
recover
when the surrounding air
temperature is lowered or the load is reduced
as far as necessary to keep the device in
working condition.
3.
To ensure sufficient convection cooling,
always maintain a distance of ≥20mm from
fan ventilated surfaces while the device is in
operation.
4.
Depending on the surrounding air
temperature and output load delivered by the
power supply, the device housing can be
very hot!
5. If the device has to be mounted in any other
orientation, please do not hesitate to contact
[e-mail] for more details.
Fig. 1 De-rating for Vertical and Horizontal Mounting Orientation
> 50°C de-rate power by 2.5% / °C
No output power de-rating for the input
voltage from 100Vac to 132Vac & 200Vac to
264Vac

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
8
Assembly & Installation
ⒶSide Mounting: Fig. 2 and Fig. 3 show the mounting hole locations for power supply assembly onto a metal mounting surface. The
power supply shall be mounted on minimum of 4 mounting holes using M4 screw maximum 5mm length (Refer to Fig. 4). This is
to maintain a safety distance between the screw and internal components.
ⒷBase Mounting: Fig. 2 and Fig. 3 show the mounting hole locations for power supply assembly onto a metal mounting surface. The
power supply shall be mounted on minimum of 4 mounting holes using M4 screw maximum 4mm length (Refer to Fig. 4).
ⒸConnector
ⒹThis surface belongs to customer’s end system or panel where the power supply is mounted.
Base Mounting (Horizontal) Base Mounting (Vertical) Side Mounting (Horizontal)
Fig. 2 Mounting Orientation
– Use flexible cable (stranded or solid) of AWG No. 20-12. The input/output connectors’ allowable current is 23A max per pin. User
should calculate and select the suitable wire specification (type/quantity/diameter) according to actual output current. The torque at
the connector shall not exceed 13Kgf.cm. The insulation stripping length should not exceed 0.275” or 7mm.
– Recommended mounting torque of the product and its mounting accessories is 9~12Kgf.cm.
Fig. 4 Assembly Reference
Only use M4 screw ≤ 5 mm through the base mounting holes at
Ⓐ
.
This is to keep a safe distance between the screw and internal
components.

Only use M4 screw ≤ 4 mm through the base mounting holes at Ⓑ.
Fig. 3 Mounting Hole Locations and the Safety Distance
For safety reasons, please ensure the mounted device is kept at ≥ 4mm safety distance at all sides from other components and
equipments. In addition, to ensure sufficient convection cooling, always maintain a distance of ≥ 20mm from fan ventilated surfaces
while the device is in operation. Please insert an insulation sheet between the system and product, if the safety distance is < 4mm.
Safety Distance
D1 = 4mm Min.
D2 = 20mm Min.

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
9
Improper Installations
Safety Instructions
– Must select correct AC input voltage before turning on (Refer to the “Device Description” on Page 5).
– The device is not recommended to be placed on low thermal conductive surface. For example, plastics.
– Note that the enclosure of the device can become very hot depending on the ambient temperature and load of the power supply.
Do not touch the device while it is in operation or immediately after power is turned OFF. Risk of burning!
– Do not touch the terminals while power is being supplied. Risk of electric shock.
– Prevent any foreign metal, particles or conductors from entering the device through the openings during installation.
It may cause: - Electric shock; Safety Hazard; Fire; Product failure.
– Warning: When connecting the device, secure Earth connection before connecting L and N. When disconnecting the device,
remove L and N connections before removing the Earth connection. The power supply must be mounted by metal screws onto a
grounded metal surface. It is highly recommended that the Earth terminal on the connector be connected to the grounded metal
surface.

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
10
Functions
Start-up Time
The time required for the output voltage to reach 90% of its set value, after the input voltage is applied.
Rise Time
The time required for the output voltage to change from 10% to 90% of its set value.
Hold-up Time
Hold up time is the time when the AC input collapses and output voltage retains regulation for a certain period of time. The time
required for the output to reach 95% of its set value, after the input voltage is removed.
■Graph illustrating the Start-up Time, Rise Time, and Hold-up Time
Inrush Current
Inrush current is the peak, instantaneous, input current measured
and, occurs when the input voltage is first applied. For AC input
voltages, the maximum peak value of inrush current will occur
during the first half cycle of the applied AC voltage. This peak
value decreases exponentially during subsequent cycles of AC
voltage.
Dynamic Response
The power supply output voltage will remain within ±1000mVpp of
its steady state value, when subjected to a dynamic load from 10
to 50% and 50 to 100% of its rated current.

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
11
Overload & Overcurrent Protections
The power supply’s Overload (OLP) and Overcurrent (OCP)
Protections will be activated when output current exceeds
>25A of rated load current. In such occurrence, the VOwill start
to droop and once the power supply has reached its maximum
power limit, the protection is activated and the power supply
will go into “Hiccup mode” (Auto-Recovery). The power supply
will recover once the fault condition of the OLP and OCP is
removed and IOis back within the specifications.
It is not recommended to prolong the duration of IOwhen it is
<25A but >14.6A, since it may cause damage to the PSU.
Short Circuit Protection
The power supply’s output OLP/OCP function also provides
protection against short circuits. When a short circuit is applied,
the output current will operate in “Hiccup mode”, as shown in
the illustration in the OLP/OCP section on this page. The
power supply will return to normal operation after the short
circuit is removed.
Overvoltage Protection
The power supply’s overvoltage circuit will be activated when
its internal feedback circuit fails. The output voltage shall not
exceed its specifications defined on Page 3 under
“Protections”.
Over Temperature Protection
As mentioned above, the power supply also has Over
Temperature Protection (OTP). In the event of a higher
operating temperature at 100% load, the power supply will run
into OTP when the operating temperature is beyond what is
recommended in the de-rating graph. When activated, the
output voltage will go into bouncing mode until the temperature
drops to its normal operating temperature as recommended in
the de-rating graph.

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
12
Operating Mode
Redundancy Operation
In order to ensure proper redundancy operation for the power supply unit (PSU), ensure that the output voltage difference between the
two units is kept at 0.45~0.50V for 24V supplies. Follow simple steps given below to verify:
Step 1.
Measure output voltage of PSU 1 and PSU 2. If PSU 1 is the master unit, then VOof PSU 1 must be higher than PSU 2. In order to set
the output voltage, connect the power supply to 50% load and set the PSU 1 and PSU 2 output voltage.
Step 2.
Connect the right DRR module, 40A as per the system requirement to the power supply units PSU 1 and PSU 2 at Vin 1 & Vin 2
respectively.
Step 3.
Connect the system load from Vout. Please note that output voltage Vout from DRR module will be = VO(output voltage of power
supply) – Vdrop* (in DRR module).
Parallel Operation
These DRR modules can also be used for Parallel function in order to increase the output power by N+1 (e.g. 2.5A + 2.5A = 5A or 2.5A
+ 2.5A + 2.5A = 7.5A) or current sharing, and thus increasing the power supply and system reliability. Though the
PMT-24V350W1AK is not designed for current sharing, a good current sharing between two power supplies can be achieved by
following simple steps as below (Refer to Fig. 5 for the Connection Diagram).
*Vdrop will vary from 0.60V to 0.90V (Typical 0.65V) depending on the load current and surrounding air temperature.
Fig. 5 Redundancy / Parallel Operation Connection Diagram
Step 1.
Set output load condition for both supplies at 50% and measure
the output voltages.
Step 2.
Adjust output voltages to the same level or within ±25mV
difference.
Step 3.
Connect PSU 1 and PSU 2 with the DRR-40A module and
measure at Vin 1 & Vin 2 to verify the voltage difference. Ensure
the voltages are within ±25mV.
Step 4.
Output voltage from DRR module Vout will be = VO(output
voltage of power supply) – Vdrop* (in DRR module).

TECHNICAL DATASHEET
PMT Panel Mount Power Supply
24V 350W 1 Phase / PMT-24V350W1AK
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (August 2013, Rev. 00)
13
Others
Delta RoHS Compliant
Restriction of the usage of hazardous substances
The European directive 2011/65/EU limits the maximum impurity level of homogeneous materials such as lead,
mercury, cadmium, chrome, polybrominated flame retardants PBB and PBDE for the use in electrical and
electronic equipment. RoHS is the abbreviation for “Restriction of the use of certain hazardous substances in
electrical and electronic equipment”.
This product conforms to this standard.

Mouser Electronics
Authorized Distributor
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