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WARNING
!
Hazardous voltages are present in this electrical equipment during operation. Failure to properly maintain the equipment can
result in death, severe personal injury or substantial property damage. Only qualified personnel is allowed to work on or
around this equipment. The successful and safe operation of this equipment is dependent on proper handling, installation
and operation.
The mains switch has to be switched off and prevented from being switched on again before installation or maintenance. If
these rules are not adhered to, contact with live parts or improper use can result in death or severe personal injury.
CAUTION
Electrostatically sensitive device (EGB). The device may only be opened by qualified personel.
Description and construction
The SITOP 24V/0.5 and 0.375A power supplies are rail-mounted built-in units. The relevant DIN/VDE regulations or equivalent local
regulations must be observed during installation.
Primary switched-mode power supply for connection to 120-230V, 50/60Hz single-phase AC system (6EP1331-2BA10) respectively to 48-
220V DC system (6EP1731-2BA00); Output voltage +24V DC, potential-free, protected against short-circuit and open-circuit conditions.
Technical specifications
6EP1331-2BA10
6EP1731-2BA00
Input data
Input voltage/frequency:
AC 120-230V
DC 48-220V
50-60Hz, 47 to 63 Hz
-
Tolerance
AC 93 to 264V
DC 30 to 264V
(optionally AC30 to 187V)
Overvoltage proof according to:
EN61000-4-1 A.2
-
Efficiency at full load:
>74% at AC 230V
>68% at DC 220V
Limitation of inrush current (25°C) standard:
2
<23A, 0,3A
s
<35A, 1,2A
at AC 230V
at DC 220V
Recommended circuit breaker, characteristic C.
3A
6A, DC-suitable
Input current:
0.22-0.13A
0.3-0.06A
Power consumption:
16W at AC 120V
14,5W at DC 48V
Installation
Mounting on a DIN EN 50022-35x15/7.5
output terminals at the bottom. Be sure to leave a minimum free space of 50mm ( 2in.) above and below the device.
The supply voltage must be connected in accordance with VDE 0100 and VDE 0160. A protective device (fuse) and an isolating device for
disconnecting the power supply must be provided.
Connections and terminal assignment
Terminals
Function
L1, N (6EP1331-2BA10)
Input voltage AC 120-230 V
L+, M (6EP1731-2BA00)
Input Voltage DC 48-220 V
PE
Protective earth conductor
+, -
Output voltage DC 24 V
Note
These instructions cannot claim to cover all details of possible equipment variations, nor in particular can they provide for every possible
example of installation, operation or maintenance. Further information is obtainable from your local Siemens office or from Catalog KT 10
Power Supplies SITOP power. Subject to change without prior notice. The German text applies in cases of doubt.
Siemens AG Österreich, 03.2001
Output variables
DC output voltage:
24V ±3%
Ripple content of output voltage:
<150mV
ripple
ss
<240mV
spikes
ss
DC output current:
0-0.5A
Parallel connection not permissible.
Environmental conditions
Temperature
Non-operating:
2
s
Operating at full load: -25 to +60°C (-13 to +140°F)
Derating at full load and +60 to +70°C
(+140 to +158°F):
no
Humidity rating:
according to EN 60721 class 3K3
Natural air convection cooling
Weight
0.11kg/0.24lb.
standard.
To ensure adequate cooling, the device must be installed vertically, with the input and
Connected load
0.5 ... 2.5mm
22...12 AWG
0-0.375A
-40 to +70°C (-40 to +158°F)
0,012A/°C
0.14kg/0.31lb.
Remarks
2
Screw-type terminals
Use a screwdriver with a blade width of 3.5mm (0.14in.)
Recommended tightening torque 0.5 to 0.7Nm (4.5 to 6.2lb.in.)
4/8
Protection and monitoring
functions
Signaling:
green LED: 24V O.K.
Current limitation:
Typ. 1.1 - 1.3 I
rated
Response to short-circuit (output):
Constant current
Automatic restart
approx. 0.6A
Mains buffering time at full load:
>10ms at AC 230V
>10ms at DC 220V
Fuse: Slow-acting
T 2A/250V
F 4A/250V
Standards and specifications
Degree of protection: IP20 to IEC 529
Degree of protection: 1 to IEC 536
Safety to EN60950: SELV
Emission: EN 50081-1, RI suppression to EN55022,
limit curve B
Noise immunity: EN 50082-2 incl. Table A4
UL508 FILE E143289
UL1950 FILE E151273
SITOP power 0,5/0,375
English
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