EN
DN1042 Installation Manual
Product Description
The DN1042 is a DIN-rail mountable single-phase-input power supply, which provides a floating,
stabilized and galvanically separated SELV/PELV/ES1 output voltage.
Intended Use
This device is designed for Installation in an enclosure and is intended for commercial use, such as
in industrial control, process control, monitoring, measurement, Audio/Video, information or
communication equipment or the like. Do not use this device in equipment where malfunction may
cause severe personal injury or threaten human life.
If this device is used in a manner outside of its specification, the protection provided by the device
may be impaired.
Without additional measures to reduce the conducted emissions on the output (e.g. by using a filter),
the device is not suited to supply a local DC power network in industrial, residential, commercial and
light-industrial environments.
Do not use this device on AC 200V mains with more than 4.5A load when the application is sensitive
to short output voltage dips during mains interruptions even with a length shorter than 20ms.
Installation Instructions
Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the
device.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper
cables that are designed for a minimum operating temperature of 60°C for ambient temperatures up
to +45°C, 75°C for ambient temperatures up to +55°C and 90°C for ambient temperatures up to
+70°C. Ensure that all strands of a stranded wire enter the terminal connection. Unused screw
terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or
frost is allowed.
The enclosure of the device provides a degree of protection of IP20. The enclosure does not provide
protection against spilled liquids.
The device is designed for overvoltage category II zones. Below 2000m altitude the device is tested
for impulse withstand voltages up to 4kV, which corresponds to OVC III according to IEC 60664-1.
The device is designed as “Class of Protection” I equipment according to IEC 61140. Do not use
without a proper PE (Protective Earth) connection.
The device is suitable to be supplied from TN, TT or IT mains networks. The continuous voltage
between the input terminal and the PE potential must not exceed 300Vac.
A disconnecting means shall be provided for the input of the device.
The device is designed for convection cooling and does not require an external fan. Do not obstruct
airflow and do not cover ventilation grid!
The device is designed for altitudes up to 5000m (16400ft). Above 2000m (6560ft) a reduction in
output current is required.
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left
and right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the
device is permanently loaded with less than 50%, the 5mm can be reduced to zero.
The device is designed, tested and approved for branch circuits up to 20A without additional
protection device. For higher branch circuits use an additional protection device. If an external input
protection device is utilized, do not use one smaller than a 10A B- or 6A C-characteristic to avoid a
nuisance tripping of the circuit breaker.
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the
same as the ambient or surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.
Functional Description
The output is electronically protected against no-load, overload and short circuit and can supply any
kind of loads, including inductive and capacitive loads. If capacitors with a capacitance >10mF and
2.5A or >5mF with 5A additional current load are connected, the unit might charge the capacitor in
an intermittent mode. No limitation in combination with an additional resistive type of load.
Do not apply return voltages from the load to the output terminals higher than 35V.
The output voltage can be adjusted with a small flat-blade screwdriver on the front of the unit.
The green DC-OK LED reports an output voltage above 18V of a running device.
At heavy overloads (when output voltage falls below 2...10V, depending on input voltage), the
device delivers continuous output current for 30ms. After this, the output is switched off for 160ms
before a new start attempt is automatically performed. This cycle is repeated as long as the overload
exists.
Do not parallel devices for higher output currents.
Same devices can be connected in series for higher output voltages. It is allowed to connect as
many outputs in series as needed, providing the sum of the output voltage does not exceed 150Vdc.
In case of an internal defect, a redundant circuit limits the maximum output voltage to 34V. The
output shuts down. To attempt a restart, turn the input power off for at least 90s.
Technical Data
All values are typical figures specified at 230Vac, 50Hz input
voltage, 24V 5A output load, 25°C ambient temperature and after
a 5 minutes run-in time unless otherwise noted.
Output voltage
DC 24V
Nominal
Adjustment range
24 – 28Vdc
Factory setting 24.1V
Output current
5.0 – 4.3A
Below +55°C ambient
3.1 – 2.7A
At +70°C ambient
Derate linearly b55°C and +70°C
Input voltage AC
AC 200 – 240V
±10%
Mains frequency
50 – 60Hz
±6%
Input current AC
1.06A
Power factor
0.54
Input inrush current
28A pk
At 40°C, cold start
Efficiency
90.5%
Power losses
12.6W
Hold-up time
33ms
Temperature range
-10 to +70°C
Max. wire size (litz wire)
4mm²
For all terminals
Wire size AWG
AWG 20-10
For all terminals
Max. wire diameter
2.8mm
For all terminals
Wire stripping length
7mm / 0.28inch
For all terminals
Tightening torque
1Nm / 9lb.inch
For all terminals
Size
(wxhxd)
39x124x124mm
Without DIN-rail
Weight
350g / 0.77lb
Functional Diagram
+
+
-
-
Output
Over-
Voltage
Protection
Input Rectifier
Inrush Current
Limiter
Voltage
Regulator
Power
Converter
Output
Filter
Input Fuse
Input Filter
V
OUT
L
N
DC-OK
LED
Output Characteristic
Output voltage
10A
24V
Output current
0V
1A
2A
3A
5A
0A
Adjustment range
28V
4A
6A
7A
9A
8A
A: intermittent current 264Vac
B: intermittent current 187Vac
A
B
Temperature Range
Allowed output current at 24V
Ambient temperature
0A
-10
5.0A
0
+70°C
3.1A
+55
