Puls Q-Series Manual
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Puls Q-Series Manual

Dc/dc converter
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Q-Series
G
D
ENERAL
ESCRIPTION
Modern machines typically use maintenance-free AC-
motors which are controlled by frequency converters or
servo amplifiers. Such devices have an intermediate DC-
bus where all individual drives are connected.
The QTD20 DC/DC converter can be connected directly
to the intermediate DC-bus. In case of a mains failure,
the QTD20 utilizes the power from the DC-bus
capacitors which are charged from the kinetic energy
of the motor until the motor has come to a complete
stop.
The intermediate DC-bus is usually unfiltered and have
high EMI noise so the QTD20 has a very robust input
stage and an appropriate input filter included.
L1
f
+
L2
L3
PE
f
QTD
+
+
-
-
PE
PE
O
N
RDER
UMBERS
DC/DC converter
QTD20.241
Accessory
ZM1.WALL Wall mount bracket
ZM14.SIDE
UF20.241
YR40.241
Oct. 2016 / Rev. 2.0 DS-QTD20.241-EN
All parameters are specified at 24V, 20A, 600Vdc input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
Additionally,
the
QTD20 is UL 508
approved
and
Motor
equipped
with
input fuses which
are
rated
and
Motor
tested for 600Vdc
applications.
DC Load,
Controller
Side mount bracket
Buffer unit
Redundancy module
www.pulspower.com Phone +49 89 9278 0
DC/DC
CONVERTER
DC 600V Input
Optimized for Intermediate DC-bus of Drive Systems
Two Input Fuses for DC 600V included
95% Full Load and Excellent Partial Load Efficiencies
Width only 65mm, Weight only 890g
25% BonusPower
Active Filtering of Input Transients
Full Power Between -25°C and +60°C
Extremely Low Input Inrush Current Surge
Reverse Input Polarity Protection
DC-OK Relay Contact
Quick-connect Spring-clamp Terminals
3 Year Warranty
S
-
HORT
FORM
Output voltage
Adjustment range
Output current
Output power
Output ripple
Input voltage
Input current
Inrush current
Efficiency
Losses
Temperature range -25°C to +70°C
Derating
is
Hold-up time
Dimensions
Weight
M
ARKINGS
Germany
QTD20.241
24V, 20A, DC I
®
, 600W for up to 4s
D
ATA
DC 24V
nominal
24 - 28V
20 – 17.5A
continuous
25 – 21.4A
short term (4s)
480W
continuous
600W
short term (4s)
< 100mVpp
20Hz to 20MHz
DC 600V
-20%/+40%
0.85A
at 600Vdc
typ. 1.5A peak
95.0%
at 600Vdc
25.5W
at 600Vdc
operational
12W/°C
+60 to +70°C
typ. 22ms
at 600Vdc
65x124x127mm
WxHxD
890g / 1.96lb
IND. CONT. EQ.
UL 508
NPUT
EMC, LVD
1/27

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Summary of Contents for Puls Q-Series

  • Page 1 QTD20.241 24V, 20A, DC I Q-Series NPUT DC/DC CONVERTER DC 600V Input Optimized for Intermediate DC-bus of Drive Systems Two Input Fuses for DC 600V included 95% Full Load and Excellent Partial Load Efficiencies Width only 65mm, Weight only 890g 25% BonusPower ®...

  • Page 2: Table Of Contents

    (available under www.pulspower.com). No part of this document may be reproduced or utilized in any form without our prior permission in writing. Some parts of this unit are patent by PULS (US patent No 091662,063, Des. 424,529, …). ERMINOLOGY AND...

  • Page 3: Intended Use

    QTD20.241 24V, 20A, DC I Q-Series NPUT 1. I NTENDED This device is designed for installation in an enclosure and is intended for the general professional use in industrial equipment. Do not use this DC/DC converter in equipment, where malfunction may cause severe personal injury or threaten human life.

  • Page 4: Input

    QTD20.241 24V, 20A, DC I Q-Series NPUT 3. I NPUT -20%/+40% Input nom. DC 600V Input range min. 480-840Vdc Continuous operation min. 360-480Vdc Maximal 60s or with reduced output current, see Fig. 5-2 min. 840V-900Vdc Maximal 60s or with reduced output current, see Fig. 5-2 max.

  • Page 5: Input Inrush Current

    QTD20.241 24V, 20A, DC I Q-Series NPUT 4. I NPUT NRUSH URRENT The DC/DC converter is equipped with an active inrush current limitation circuit, which limits the input inrush current after turn-on and after short input voltage interruptions to a very low value.

  • Page 6: Output

    QTD20.241 24V, 20A, DC I Q-Series NPUT 5. O UTPUT Output voltage nom. Adjustment range min. 24-28V Guaranteed max. At clockwise end position of potentiometer Factory setting typ. 24.1V ±0.2%, at full load, cold unit Line regulation max. 10mV At 480-840Vdc voltage change Load regulation max.
  • Page 7 QTD20.241 24V, 20A, DC I Q-Series NPUT Fig. 5-1 Output voltage vs. output current, typ. Fig. 5-2 Output current vs. input voltage Adjustment Allowed Output Output Voltage Range Current at 24V Input Voltage Output Current ® Fig. 5-3 Bonus time vs. output power Fig.

  • Page 8: Hold-Up Time

    QTD20.241 24V, 20A, DC I Q-Series NPUT 6. H DC 600V Hold-up Time typ. 44ms At 24V, 10A, see Fig. 6-1 min. 36ms At 24V, 10A, see Fig. 6-1 typ. 22ms At 24V, 20A, see Fig. 6-1 min. 18ms At 24V, 20A, see Fig. 6-1 Fig.

  • Page 9: Efficiency And Power Losses

    QTD20.241 24V, 20A, DC I Q-Series NPUT 8. E FFICIENCY AND OWER OSSES DC 600V Efficiency typ. 95.0% At 24V, 20A Average efficiency typ. 94.4% 25% at 5A, 25% at 10A, 25% at 15A and 25% at 20A Power losses typ.

  • Page 10: Lifetime Expectancy And Mtbf

    QTD20.241 24V, 20A, DC I Q-Series NPUT 9. L MTBF IFETIME XPECTANCY AND DC 600V Calculated lifetime expectancy*) 220 000h At 24V, 10A and 25°C 78 000h At 24V, 10A and 40°C 119 000h At 24V, 20A and 25°C 42 000h At 24V, 20A and 40°C...

  • Page 11: Terminals And Wiring

    QTD20.241 24V, 20A, DC I Q-Series NPUT 11. T ERMINALS AND IRING The terminals are IP20 Finger safe constructed and suitable for field and factory wiring. Type Quick-connect spring-clamp terminals Solid wire Max. 6mm Stranded wire Max. 4mm American Wire Gauge Max.

  • Page 12: Front Side And User Elements

    QTD20.241 24V, 20A, DC I Q-Series NPUT 12. F RONT IDE AND LEMENTS Fig. 12-1 Front side Input Terminals (Quick-connect spring-clamp terminals) Positive input – Negative (return) input ...PE (Protective Earth) input B Output Terminals (Quick-connect spring-clamp terminals, two pins per pole) Positive output –...

  • Page 13: 13. Emc

    QTD20.241 24V, 20A, DC I Q-Series NPUT 13. EMC The DC/DC converter is suitable for applications in industrial environment. According to generic standards: EN 61000-6-2 and EN 61800-3 EMC Immunity Electrostatic discharge EN 61000-4-2 Contact discharge Criterion A Air discharge...

  • Page 14: Environment

    QTD20.241 24V, 20A, DC I Q-Series NPUT 14. E NVIRONMENT Operational temperature -25°C to +70°C (-13°F to 158°F) Reduce output power according Fig. 14-1 Storage temperature -40 to +85°C (-40°F to 185°F) For storage and transportation Output de-rating 12W/°C 60-70°C (140°F to 158°F) Humidity 5 to 95% r.H.

  • Page 15: Protection Features

    QTD20.241 24V, 20A, DC I Q-Series NPUT 15. P ROTECTION EATURES Output protection Electronically protected against overload, no-load and short-circuits Output over-voltage protection typ. 32Vdc In case of an internal DC/DC converter defect, a max. 35Vdc redundant circuit limits the maximum output voltage.

  • Page 16: Dielectric Strength

    QTD20.241 24V, 20A, DC I Q-Series NPUT 17. D IELECTRIC TRENGTH The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down).

  • Page 17: Physical Dimensions And Weight

    QTD20.241 24V, 20A, DC I Q-Series NPUT 19. P HYSICAL IMENSIONS AND EIGHT Width 65mm 2.56’’ Height 124mm 4.88’’ Depth 127mm 5.0’’ The DIN-rail height must be added to the unit depth to calculate the total required installation depth. Weight 890g / 1.96lb...

  • Page 18: Accessories

    QTD20.241 24V, 20A, DC I Q-Series NPUT 20. A CCESSORIES 20.1. ZM1.WALL – W ANEL MOUNTING This bracket is used to mount the QTD20 DC/DC converter on a wall/panel without utilizing a DIN-Rail. The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.

  • Page 19: Zm14.Side - Side Mounting Bracket

    QTD20.241 24V, 20A, DC I Q-Series NPUT 20.2. ZM14.SIDE - S OUNTING RACKET This bracket is used to mount the QTD20 DC/DC converter sideways with or without utilizing a DIN-Rail. The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.

  • Page 20: Uf20.241 - Buffer Module

    QTD20.241 24V, 20A, DC I Q-Series NPUT 20.3. UF20.241 - B UFFER MODULE This buffer unit is a supplementary device for DC 24V power supplies and DC/DC converter. It delivers power to bridge typical mains failures or extends the hold-up time after turn-off of the AC or DC power.

  • Page 21: Application Notes

    QTD20.241 24V, 20A, DC I Q-Series NPUT 21. A PPLICATION OTES 21.1. R EPETITIVE ULSE OADING Typically, a load current is not constant and varies over time. This DC/DC converter is designed to support loads with a higher short-term power demand (=BonusPower ®...

  • Page 22: Peak Current Capability

    QTD20.241 24V, 20A, DC I Q-Series NPUT 21.2. P URRENT APABILITY The DC/DC converter can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents. This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil.

  • Page 23: Charging Of Batteries

    QTD20.241 24V, 20A, DC I Q-Series NPUT 21.4. C HARGING OF ATTERIES The DC/DC converter can be used to charge lead-acid or maintenance free batteries. (Two 12V batteries in series) Instructions for charging batteries: Set output voltage (measured at no load and at the battery end of the cable) very precisely to the end-of-charge voltage.

  • Page 24: Output Circuit Breakers

    QTD20.241 24V, 20A, DC I Q-Series NPUT 21.5. O UTPUT IRCUIT REAKERS Standard miniature circuit breakers (MCB’s or UL1077 circuit breakers) are commonly used for AC-supply systems and may also be used on DC branches. MCB’s are designed to protect wires and circuits. If the ampere value and the characteristics of the MCB are adapted to the wire size that is used, the wiring is considered as thermally safe regardless of whether the MCB opens or not.

  • Page 25: Parallel Use To Increase Output Power

    SE TO NCREASE UTPUT OWER DC/DC converters and power supplies from the same series (Q-Series) can be Unit A Input paralleled to increase the output power. The output voltage shall be adjusted to the same value (±100mV) or the units can be left with the factory settings.

  • Page 26: Back-Feeding Loads

    QTD20.241 24V, 20A, DC I Q-Series NPUT 21.10. B FEEDING OADS Loads such as decelerating motors and inductors can feed voltage back to the DC/DC converter. This feature is also called return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).

  • Page 27: Mounting Orientations

    QTD20.241 24V, 20A, DC I Q-Series NPUT 21.12. M OUNTING RIENTATIONS Mounting orientations other than all terminals on the bottom require a reduction in continuous output power or a limitation in the maximum allowed ambient temperature. The amount of reduction influences the lifetime expectancy of the DC/DC converter.

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Qtd20.241

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