These PIANO series units are extraordinarily compact,
industrial grade power supplies that focus on the
essential features needed in today’s industrial
applications. The excellent cost/performance ratio
presents many new and exciting opportunities without
compromising quality or reliability.
The mechanically robust housing is made of a highgrade, reinforced molded material, which permits the
units to be used in surrounding temperatures up to
70°C.
Since typical industrial applications do not require
multiple mains inputs, the reduction to a regional input
voltage range (AC 200-240V) simplifies the circuitry and
has significant advantages for reliability, efficiency and
cost.
The addition of a DC-OK signal makes the unit suitable
for many industry applications such as: process,
automation and many other critical applications where
preventive function monitoring can help to avoid long
downtimes.
RDER NUMBERS
O
Power Supply PIC240.241C 24-28V Standard unit
Accessory YR2.DIODE Redundancy module
with DC-OK contact
UF20.241 Buffer Module
24V, 10A, S
INGLE PHASE INPUT
OWER SUPPLY
P
AC 200-240V Regional Input
Cost Optimized without Compromising Quality or
Reliability.
Width only 49mm
Efficiency up to 91.4%
Full Power Between -10°C and +55°C
DC-OK Relay Contact Included
3 Year Warranty
HORT-FORM DATA
S
Output voltage DC 24V
Adjustment range 24 - 28V
Output current 10A at 24V, amb <55°C
6.25A at 24V, amb <70°C
8.6A at 28V, amb <55°C
5.4A at 28V, amb <70°C
Output power 240W ambient <55°C
150W ambient <70°C
Output ripple < 100mVpp 20Hz to 20MHz
AC Input voltage AC 200-240V ±10%
Mains frequency 50-60Hz ±6%
AC Input current 2.2A at 230Vac
Power factor 0.52 at 230Vac
AC Inrush current typ. 48A peak at 230Vac, 40°C
Efficiency 91.4% at 230Vac
Losses 22.6W at 230Vac
Temperature range -10°C to +70°C operational
Derating 6W/°C +55 to +70°C
Hold-up time 33ms at 230Vac
Dimensions 49x124x124mm WxHxD
Weight 550g / 1.2lb
ARKINGS
M
IND. CONT. E
UL 508
Marine
UL 60950-1
EMC, LVD
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
The information presented in this document is believed to be accurate and reliable and may change without notice.
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.
Intended Use .......................................................3
23.5. Parallel Use for 1+1 Redundancy ............. 19
23.6. Series Operation .......................................20
23.7. Inductive and Capacitive Loads................20
23.8. Charging of Batteries ...............................20
23.9. Operation on Two Phases ........................21
23.10. Use in a Tightly Sealed Enclosure ............21
24V, 10A, S
INGLE PHASE INPUT
ERMINOLOGY AND ABREVIATIONS
T
PE and symbol PE is the abbreviation for Protective Earth and has the same meaning as the symbol .
Earth, Ground This document uses the term “earth” which is the same as the U.S. term “ground”.
T.b.d. To be defined, value or description will follow later.
AC 230V A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
230Vac A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
50Hz vs. 60Hz As long as not otherwise stated, AC 230V parameters are valid at 50Hz mains frequency.
may A key word indicating flexibility of choice with no implied preference.
shall A key word indicating a mandatory requirement.
should A key word indicating flexibility of choice with a strongly preferred implementation.
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
2/21
PIC240.241C
PIANO-Series
1. I
NTENDED USE
This device is designed for installation in an enclosure and is intended for the general professional use such as in
industrial control, office, communication, and instrumentation equipment.
Do not use this power supply in equipment, where malfunction may cause severe personal injury or threaten human
life.
The power supply does not fulfil the harmonic current standard EN61000-3-2. Do not use this power supply when the
following criteria apply:
a) the end-device is used within the European Union and
b) the end-device is connected to a public mains supply with a nominal voltage greater or equal 220Vac and
c) the power supply is:
- fitted in an end-device with an average input power in excess of 75W or
- fitted in an end-device with a continuous input power in excess of 75W or
- part of a lighting system.
Exception:
End-devices for professional applications with an input power > 1000W do not need to fulfill EN 61000-3-2.
Comments:
- The average input power must be determined in accordance with EN 61000-3-2.
- Industrial mains supplies with their own transformer are considered to be “non-public”.
- Where individual self-contained items of equipment are installed in a rack or case
(e.g. devices connected in parallel), they are regarded as being individually connected to the
mains supply. The rack or case need not be tested as a whole. Alternatively it is also permitted
to assess the whole rack or case. This is recommended for devices used in professional
applications with an input power greater than 1000W.
24V, 10A, S
INGLE PHASE INPUT
2. I
NSTALLATION REQUIREMENTS
This device may only be installed and put into operation by qualified personnel.
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 unit to
the factory for inspection.
Mount the unit on a DIN-rail so that the input terminals are located on the bottom of the unit.
This 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 15%!
Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are
recommended when the device is loaded permanently with more than 50% of the rated power. Increase this clearance
to 15mm in case the adjacent device is a heat source (e.g. another power supply).
A disconnecting means shall be provided for the output of the power supplies when used in applications according to
CSA C22.2 No 107.1-01.
WARNING
- Do not use the power supply without proper grounding (Protective Earth). Use the terminal on the input block for
earth connection.
- Turn power off before working on the device. Protect against inadvertent re-powering.
- Make sure that the wiring is correct by following all local and national codes.
- Do not modify or repair the unit.
- Do not open the unit as high voltages are present inside.
- Use caution to prevent any foreign objects from entering the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns.
Risk of electrical shock, fire, personal injury or death.
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
3/21
PIC240.241C
PIANO-Series
24V, 10A, S
INGLE PHASE INPUT
3. AC-I
NPUT
AC input nom. AC 200-240V suitable for TN-, TT- and IT mains networks
AC input range min. 180-264Vac continuous operation
min. 264-300Vac < 500ms
Allowed voltage L or N to earth max. 300Vac continuous, IEC 62103
Input frequency nom. 50–60Hz ±6%
Turn-on voltage typ. 173Vac steady-state value, see Fig. 3-1
Shut-down voltage typ. 107Vac at 24V 0A, steady-state value, see Fig. 3-1
typ. 140Vac at 24V 10A, steady-state value, see Fig. 3-1
External input protection See recommendations in chapter 23.3.
Input current typ. 2.2A at 24V, 10A, 230Vac, see Fig. 3-3
Power factor*) typ. 0.52 at 24V, 10A, 230Vac, see Fig. 3-4
Crest factor
Start-up delay typ. 130ms see Fig. 3-2
**)
typ. 3.7 at 24V, 10A, 230Vac
Rise time typ. 35ms at 24V, 10A const. current load, 0mF load
capacitance, see Fig. 3-2
typ. 100ms at 24V, 10A const. current load, 10mF load
capacitance,, see Fig. 3-2
Turn-on overshoot max. 200mV see Fig. 3-2
*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.
**) The crest factor is the mathematical ratio of the peak value to RMS value of the input current waveform.
Fig. 3-3 Input current vs. output load at 24V Fig. 3-4 Power factor vs. output load
Input Current, typ.
3A
2.5
2.0
1.5
1.0
0.5
0
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
Output Current
89
10A01234567
Power Factor, typ.
0.65
0.60
0.55
0.50
0.45
0.40
0.35
1
Output Current
579
10A23468
4/21
PIC240.241C
PIANO-Series
4. DC-I
Do not operate this power supply with DC-input voltage.
NPUT INRUSH CURRENT
5. I
A NTC inrush limiter limits the input inrush current after turn-on of the input voltage.
Inrush current
typ. 48A
typ. 35A
Inrush energy
*) The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Fig. 5-2 Input inrush current, zoom into first peak 230Vac input, 24V 10A output, 25°C ambient
24V, 10A, S
INGLE PHASE INPUT
Input current
10A/DIV
Input voltage
500V/DIV
Output voltage 20V/DIV
Ipeak = 35A
500μs/DIV
Input current
10A/DIV
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
5/21
PIC240.241C
PIANO-Series
24V, 10A, S
INGLE PHASE INPUT
6. O
UTPUT
Output voltage nom. DC 24V
Adjustment range min. 24-28V guaranteed
max. 30V
**)
at clockwise end position of potentiometer
Factory settings typ. 24.1V ±0.2%, at full load, cold unit
Line regulation max. 50mV 187-264Vac
Load regulation max. 150mV static value, 0A Æ 10A; see Fig. 6-1
Ripple and noise voltage max. 100mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 10A at 24V, ambient temperature <55°C, see Fig. 6-1
nom. 6.25A at 24V, ambient temperature <70°C, see Fig. 6-1
nom. 8.6A at 28V, ambient temperature <55°C, see Fig. 6-1
nom. 5.4A at 28V, ambient temperature <70°C, see Fig. 6-1
Output power nom. 240W ambient temperature <55°C
nom. 150W ambient temperature <70°C
Overload behaviour continuous current see Fig. 6-1
Short-circuit current max. 16A*) load impedance 50mOhm
Output capacitance typ. 4 400μF included inside the power supply
*) Discharge current of output capacitors is not included.
**) This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not
guaranteed value which can be achieved. The typical value is about 28.5V.
Fig. 6-1 Output voltage vs. output current,
Output Voltage
28V
24
20
16
12
8
4
0
048
typ.
Adjustment
Range
Output Current
16A106212 14
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
6/21
PIC240.241C
PIANO-Series
24V, 10A, S
7. H
OLD-UP TIME
Hold-up Time typ. 75ms at 24V, 5A, 230Vac, see Fig. 7-1
min. 59ms at 24V, 5A, 230Vac, see Fig. 7-1
typ. 33ms at 24V, 10A, 230Vac, see Fig. 7-1
min. 25ms at 24V, 10A, 230Vac, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions
Hold-up Time
80ms
a) 24V 5A typ.
b) 24V 5A min.
c) 24V 10A typ.
70
d) 24V 10A min.
60
50
40
30
20
10
0
170200230264Vac
Input Voltage
a
b
Input
Voltage
c
d
Output
Voltage
Zero Transition
Hold-up Time
INGLE PHASE INPUT
- 5%
8. DC-OK
RELAY CONTACT
This feature monitors the output voltage on the output terminals.
Threshold voltage typ. 21.4V (fixed)
Contact closes As soon as the output voltage reaches 21.4V.
Contact opens As soon as the output voltage falls below 21.4V.
Contact ratings max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load
min. 1mA at 5Vdc min. permissible load
Isolation voltage See dielectric strength table in section 18.
Fig. 8-1 DC-ok relay contact behavior
Output Voltage
21.4V
open
closed
Jan. 2016 / Rev. 1.5 DS-PIC240.241C-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
7/21
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