DSA240 Series
240 Watts
• Ultra Slim Design
• 150% Peak Load for 3 seconds
• Ambient Operation from -25 °C to +70 °C
• High Efficiency – Up to 92%
• Selectable Overload Characteristic
• Selectable Remote Inhibit or Enable
• 3 Year Warranty
AC-DC Power Supplies
xxx Series
Dimensions:
DSA240:
4.64 x 4.93 x 2.59” (117.8 x 125.2 x 65.8 mm)
Models & Ratings
Output Voltage
24 V
48 V
Notes
1. Typical efficiency at 230 VAC and full load.
2. Peak load is for a maximum of 3 s, see Application Notes. Average power is not to exceed nominal output power.
3. Output current should be limited so that nominal output power is not exceeded.
Output Power
240 W
240 W
Output Voltage Trim
(3)
23.52-25.92 V
47.04-51.84 V
Output Current
10 A
5A
Peak Load
(2)
15.0 A
7.5 A
Typical Efficiency
(1)
91%
92%
Model Number
DSA240PS24
DSA240PS48
Mechanical Details
4.636 (117.75)
117.7
1
DC O/P
+V
-V +RC -RC
6
Pin Connector
DC
OK
VOUT ADJ.
1
2
OCP Mode
RC Mode
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DSA240
L
N
AC I/P
2.591 (65.8)
65.80
4.929 (125.2)
ON
Conn Pin
1
AC
2
I/P
3
1
2
3
DC
O/P
4
5
6
Designation
Ground
L
N
+Vout
-Vout
+RC
-RC
DC OK
DC OK
1
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DSA240 Series
Input
Characteristic
Input Voltage - Operating
Input Frequency
Power Factor
Input Current - Full Load
Inrush Current
Earth Leakage Current
Input Protection
T5.0 A / 250 V internal in-line fuse
Minimum
90
47
50/60
0.95
2.5/1.3
33/65
1.0
Typical
Maximum
264
63
AC-DC Power Supplies
Units
VAC
Hz
Notes & Conditions
At 230 VAC. Conforms to EN61000-3-2 Class A
A
A
mA
115/230 VAC
At 115/230 VAC
At 264 VAC, 60 Hz
Output
Characteristic
Output Voltage - V1
Initial Set Accuracy
Output Voltage Adjustment
Minimum Load
Start Up Delay
Start Up Rise Time
Hold Up Time
Line Regulation
Load Regulation
Transient Response - V1
Ripple & Noise
Overvoltage Protection
Overload Protection
Short Circuit Protection
Thermal Protection
Temperature Coefficient
Remote On/Off
95 (±5)
0.03
Selectable as Enable or Inhibit using front panel switch
°C
%/˚C
28
56
20
±0.5
±1
4
1
33
65
0
1.0
50
Minimum
24
Typical
Maximum
48
±1
-2/+8
Units
VDC
%
%
A
s
ms
ms
%
%
%
% pk-pk
V
V
%
Recovery within 1% in less than 2 ms
for a 50% step load change at 0.2 A/µs
Measured at 20 MHz bandwidth with 0.1 µF ceramic
capacitor and 47 µF electrolytic
24 V model
48 V model
See Application Notes
Trip & restart (hiccup mode) for 5 cycles then latch.
Recycle AC to reset.
Measured on internal heatsink auto recovery
At full load and 115 VAC
Notes & Conditions
See Models and Ratings table
At 100% load
See Models and Ratings table
No minimum load required
General
Characteristic
Efficiency
Isolation: Input to Output
Input to Ground
Output to Ground
Switching Frequency
DC OK Signal
Output LED
Mean Time Between Failure
Weight
Minimum
91
3000
1500
500
60/100
Green LED to indicate output on.
>150
2.01 (910)
kHrs
lb (g)
MIL-HDBK-217F, +25 °C GB
Typical
Maximum
92
Units
%
VAC
VAC
VAC
kHz
PFC/Main converter
Notes & Conditions
See Models & Ratings table
Volt free contacts rated at 60 VDC/0.3 A, 30 VDC/1.0 A or 30 VAC/0.5 A (resistive load)
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2
DSA240 Series
Environmental
Characteristic
Operating Temperature
Storage Temperature
Cooling
Operating Humidity
Operating Altitude
Shock
Vibration
20
95
Minimum
-25
-40
Typical
AC-DC Power Supplies
Maximum
+70
+85
Units
°C
°C
Notes & Conditions
See derating curve in Application Notes
Natural convection
%RH
m
Non-condensing
IEC68-2-27, 4 g, 22 ms half sine, 3 times in each of
6 axes
IEC68-2-6, 10-500 Hz, 2 g 10 mins/sweep. 60 mins
for each of 3 axes
3000
EMC: Emissions
Phenomenon
Conducted
Radiated
Harmonic Current
Voltage Fluctuations
Standard
EN55022
EN55022
EN61000-3-2
EN61000-3-3
Test Level
Class B
Class B
Class A
Criteria
Notes & Conditions
EMC: Immunity
Phenomenon
ESD Immunity
Radiated Immunity
EFT/Burst
Surges
Conducted
Magnetic Fields
Dips and Interruptions
Standard
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
EN55024
Test Level
6 kV
8 kV
10 V/m
3
Installation class 3
10 V
4
Dip: 30%, 10 ms
Dip: 60%, 100 ms
Dip: 100%, 5000 ms
Criteria
A
A
A
A
A
A
A
A/B
B
High Line/Low Line
Contact
Notes & Conditions
Air Discharge
Safety Approvals
Safety Agency
UL
TUV
CB
Safety Standard
UL508
EN60950-1
IEC60950-1
Notes & Conditions
Industrial Control Equipment
Information Technology
Information Technology
3
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DSA240 Series
Mechanical Details
4.636 (117.75)
117.7
AC-DC Power Supplies
1
DC O/P
+V
-V +RC -RC
6
Pin Connector
DC
OK
VOUT ADJ.
1
2
OCP Mode
RC Mode
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DSA240
L
N
AC I/P
2.591 (65.8)
65.80
Notes
1. All dimensions in inches (mm)
2. Weight: 2.01 lbs (910 g)
3. Tolerance: ±0.02 in (±0.5 mm)
4. Screw terminal: 10-24 AWG cables size.
5. Connection screw maximum torque: Input: 4.4lbs-in (0.5 Nm), Output: 7.0 lbs-in (0.79 Nm).
Application Notes
Derating Curves
4.929 (125.2)
ON
Conn Pin
1
AC
2
I/P
3
1
2
3
DC
O/P
4
5
6
Designation
Ground
L
N
+Vout
-Vout
+RC
-RC
DC OK
DC OK
150
112.5
100
For typ. 3sec
Load (%)
40
50
60
70
90
80
70
60
50
Load (%)
100
50
40
Continuous
40
0
10
20
30
-25
(Vertical)
90
100
110
135
230 264Vac
Ambient Temperature (°C)
Input Voltage(V)
DC OK
5
DCOK
Open = Output fail, if voltage drops below 45% of nominal
Closed = Output good
Contact Rating: 0.3 A at 60 VDC, 1.0 A at 30 VDC, 0.5 A at 30 VAC.
500 VDC isolation to output.
6
DCOK
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DSA240 Series
Application Notes
Peak Loading
OCP Mode switch set to position 1
I
T-peak
AC-DC Power Supplies
The peak loading and overload characteristics can be programmed into one of two modes by
appropriate selection of the OCP mode switch on the front panel.
A peak load of up-to 150% can be taken for a given duration. This duration depends on the
percentage of peak load taken and can be determined by graph A below.
If the load is reduced to less than 100% of nominal either before or at the end of the duration,
then there is a period of recovery needed to allow the power supply to cool down before the
peak load can be re-applied. The time required for recovery depends on the amount of reduction
of load and can be determined by graph B below.
T
I-peak
I-recovery
T-recovery
0
However, if the peak load period exceeds the duration indicated by graph A the output will go
into constant current mode for protection. The constant current value will be 105% of the
nominal rating.
During constant current operation, if the output voltage should fall below 40% of the rated
voltage then the output will turn off and try to restart for five times before turning off
permanently. Once this has happened, the output will need to be reset by turning the AC mains
off and on again.
O
T
OCP Mode switch set to position 2
I
T-peak
A peak load of up-to 150% can be taken for a given duration. This duration depends on the
percentage of peak load taken as described by graph A.
Once the peak load duration is exceeded, the output will turn off for 3-4 seconds before
automatically restarting.
I-peak
GRAPH A
0
3 ~ 4 sec
GRAPH B
Recovery duration
24
22
20
18
16
14
12
10
8
6
4
2
0
(Sec.)
T
Peak duration
-
22
20
18
16
14
12
10
8
6
4
2
0
(Sec.)
110% 115% 120% 125% 130% 135% 140% 145% 150% I-peak
Load (%)
10% 20% 30% 40% 50% 60% 70% 80% 90% I-normal
Load (%)
Remote Control
The output can be controlled by applying a voltage between
pin 3 of the DC output with respect to pin 4. The effect of the
control is dependant upon the RC switch setting on the front
panel.
If the switch is set to position 1 then the output can be
disabled by applying a suitable voltage.
If the switch is set to position 2 then the output can be
enabled by applying a voltage. In the range of 2.5 V to 9.0 V
limited to 20 mA.
Switch Position
1
1
2
2
Pin 3 Voltage
with respect to Pin 4
<0.8 V or Open Circuit
>2.5 V, <9.0 V
<0.8 V or Open Circuit
>2.5 V, <9.0 V
Output
ON
OFF
OFF
ON
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20 Feb 17
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