EN
QS5.241-60 Instruction Manual
The information in this document is believed to be accurate and reliable and may change without notice
Product Description
The QS5.241-60 is a DIN-rail mountable DC/DC converter with conformal coated pc-boards of the
DIMENSION series. It provides a floating, stabilized and galvanically separated SELV/PELV output
voltage.
Intended Use
This device is designed for installation in an enclosure and is intended for general use such as in
rolling stock for railway applications (according to EN 50155) or in industrial control, office,
communication, and instrumentation equipment. Do not use this device in equipment, where
malfunction may cause severe personal injury or threaten human life.
Installation Notes
-
This device does not contain serviceable parts. The tripping of an internal fuse is caused by an
internal defect. If damage or malfunction should occur during installation or operation, immediately
turn power off and send device to the factory for inspection.
-
Install the 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. For other orientations see de-rating requirements in the datasheet.
-
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 +60°C and 90°C for ambient
temperatures up to +70°C. Ensure that all strands of a stranded wire enter the terminal connection.
-
For use in a controlled environment. Do not use the device in pollution degree 3 areas without
additional protection or in applications where a degree of protection better than IP20 is required.
-
The input can also be powered from batteries or similar DC sources. The voltage between the (+)
or (-) terminal and the PE terminal must not exceed 375Vdc continuously acc. to IEC 62477-1.
-
Check correct input polarity. The device does not start when input voltage is reversed.
-
A disconnecting means shall be provided for the input or output of the device when used in
applications according to CSA C22.2 No 107.1-01 or CSA C22.2 No 107.1-16.
-
The device is designed as “Class of Protection I” equipment according to IEC 61140. A PE
(Protective Earth) connection is required.
-
The output is electronically protected against no-load, overload and short circuit and can supply any
kind of loads, including unlimited capacitive and inductive loads.
-
Do not apply return voltages from the load to the output higher than 35V.
-
The device is designed for convection cooling and does not require an external fan. Do not obstruct
airflow and do not cover ventilation grid (e.g. cable conduits) by more than 30%!
-
The device is designed for altitudes up to 6000m. See details in the product datasheet for additional
requirements above 2000m.
-
Keep the following minimum installation clearances when the device is permanently loaded with
more than 50% of the nominal current: 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.
-
The device is designed, tested and approved for branch circuits up to 32A without additional
protection device. If an external fuse is utilized, do not use circuit breakers smaller than 6A B- or 3A
C-Characteristic to avoid a nuisance tripping of the circuit breaker.
-
The maximum surrounding air temperature is +85°C / +185°F. The operational temperature is the
same as the ambient or surrounding air temperature and is defined as the air temperature 2cm
below the device.
-
For suitable accessories, such as mounting brackets or supplementary devices, see product datasheet.
Functional Description
-
The output voltage can be adjusted. Open the flap on the front to set the output voltage with a small flat-
blade screwdriver. The factory setting is 24.1V.
-
The green DC-OK LED on the front of the device reports a functional unit and is synchronized with the
DC-OK relay contact. The LED is on when the output voltage is >90% of the adjusted output voltage.
-
The DC-OK relay contact monitors the output voltage, which is produced by the device itself. It is
independent of a back-fed voltage from a device connected in parallel to the device’s output.
-
The red overload LED is on, when the voltage falls below 90% of the adjusted output voltage or in
case of a short circuit in the output. The LED is flashing, when the device has switched off due to
over-temperature. Input voltage is required.
-
The device is equipped with an over-temperature protection. In case of a high temperature, the
output shut-down and starts automatically again after cooling off.
-
The device can be paralleled to increase the output power. The output voltage shall be adjusted to
the same value (±100mV) with the same load conditions on all devices, or the devices can be left
with the factory settings. The ambient temperature is not allowed to 60°C. If more than
three devices are connected in parallel, a fuse or circuit breaker with a rating of 8A or 10A is
required on each output. Alternatively, a diode or redundancy module can also be utilized.
-
Devices of the same type can be connected in series for higher output voltages. It is possible to
connect as many devices in series as needed, providing the sum of the output voltage does not
exceed 150Vdc. Avoid return voltages from the load to the output.
-
In case of an internal defect, a redundant circuit limits the maximum output voltage to 36Vdc. The
output shuts down and automatically attempts to restart.
Technical data
All parameters are typical values specified at 110Vdc input voltage, 24V
4.2A output, 25°C ambient temperature and after a 5 minutes run-in time
unless otherwise noted.
Output voltage, nominal
DC 24V
Adjustment range
24 – 28Vdc
Factory setting 24.1V
Output current
4.2 – 3.6A
Continuous, < +70°C
6.3 – 5.4A
For 4 seconds, < +70°C
4.2 – 3.6A
For 10 minutes, < +85°C
Input voltage DC
DC 110V
-30% / +40%
Input voltage range
77 – 154Vdc
Input current DC
1.0A
Input inrush current
10A pk
Efficiency
91.1%
Power losses
9.8W
Hold-up time
42ms
Temperature range
-25°C to +70°C
Continuous
Maximum wire size
1)
6mm² / 4mm²
Input terminals
Wire size AWG
AWG 20-10
Input terminals
Maximum wire diameter
2)
2.8mm Input
terminals
Wire stripping length
10mm / 0.4inch
Input terminals
Maximal wire size
1)
4mm² / 2.5mm²
Output, DC-OK terminals
Wire size AWG
AWG 26-12
Output, DC-OK terminals
Maximal wire diameter
2)
2.25 mm
Output, DC-OK terminals
Wire stripping length
6mm / 0.25inch
Output, DC-OK terminals
Size
(wxhxd)
40x124x117mm Without
DIN-rail
Weight
640g / 1.41lb
1)
Solid / stranded wire
2)
Including ferrules
Functional diagram
+
+
-
-
DC-OK
contact
Output
Over-
Voltage
Protection
Boost
Converter
Output
Voltage
Regulator
Output
Filter
DC-ok
Relay
Output
Voltage
Monitor
Output
Power
Manager
Temper-
ature
Shut-
down
DC-OK
LED
Input Fuse
Input Filter
Active
Inrush
Limiter
Power
Converter
+
-
V
OUT
13
14
Reverse
Polarity
&
Back-
feeding
Protection
Overload
LED
Output characteristic
Output voltage
10A
24V
Output current
12V
0V
2A
4A
6A
8A
0A
Adjustment range
A: continuous
B: up to 4s
B
A
28V
Temperature range
Allowed output current at 24V
Ambient temperature
2A
0A
-25°C
A: continuous
B: up to 4s
C: up to 10 minutes
6A
+25°C
0°C
+50°C
+70°C
+85°C
4A
4.2A
6.3A
A
C
B
Headquarters:
PULS GmbH, Elektrastr. 6, 81925 Munich, Germany, www.pulspower.com
Doc. ID: PU-348.015.76-xxA (2016-11)
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