Datasheet

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QTD20.241

Q-Series

24V, 20A, DC INPUT

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

, 600W for up to 4s

 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

1/27

GENERAL DESCRIPTION

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.

Additionally, the

QTD20 is UL 508

approved and is

equipped with

input fuses which

are rated and

tested for 600Vdc

applications.

SHORT-FORM DATA

Output voltage DC 24V nominal

Adjustment range 24 - 28V

Output current 20 – 17.5A continuous

25 – 21.4A short term (4s)

Output power 480W continuous

600W short term (4s)

Output ripple < 100mVpp 20Hz to 20MHz

Input voltage DC 600V -20%/+40%

Input current 0.85A at 600Vdc

Inrush current typ. 1.5A peak

Efficiency 95.0% at 600Vdc

Losses 25.5W at 600Vdc

Temperature range -25°C to +70°C operational

Derating 12W/°C +60 to +70°C

Hold-up time typ. 22ms at 600Vdc

Dimensions 65x124x127mm WxHxD

Weight 890g / 1.96lb

Motor

DC Load,

Controller

QTD

Motor

ORDER NUMBERS

DC/DC converter QTD20.241

Accessory ZM1.WALL Wall mount bracket

ZM14.SIDE Side mount bracket

UF20.241 Buffer unit

YR40.241 Redundancy module

MARKINGS

IND. CONT. E

UL 508

EMC, LVD

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.

www.pulspower.com Phone +49 89 9278 0 Germany

Summary of content (27 pages)

PAGE 1
QTD20.
PAGE 2
QTD20.241 24V, 20A, DC INPUT Q-Series INDEX Page 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Intended Use .......................................................3 Installation Requirements...................................3 Input ....................................................................4 Input Inrush Current ...........................................5 Output .................................................................6 Hold-up Time.................................
PAGE 3
QTD20.241 24V, 20A, DC INPUT Q-Series 1. INTENDED USE 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. 2. INSTALLATION REQUIREMENTS This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable parts.
PAGE 4
QTD20.241 24V, 20A, DC INPUT Q-Series 3. INPUT Input Input range nom. min. min. min. max. DC 600V -20%/+40% 480-840Vdc 360-480Vdc 840V-900Vdc 1000Vdc Allowed voltage input to Earth max. max. max. 600V R.M.S. ±900Vpk 1000V/μs max. typ. typ. typ. typ. typ. typ. 50Vpp 450Vdc 325Vdc 0.
PAGE 5
QTD20.241 24V, 20A, DC INPUT Q-Series 4. INPUT INRUSH CURRENT 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. Inrush current*) Inrush energy Inrush delay *) max. typ. max. typ. DC 600V 3Apeak 1.
PAGE 6
QTD20.241 24V, 20A, DC INPUT Q-Series 5. OUTPUT Output voltage Adjustment range Factory setting Line regulation Load regulation Ripple and noise voltage Output current – continuous Output current – up to 4s 1) Output power – continuous Output power – up to 4s 1) BonusPower® time BonusPower® recovery time Overload behavior Short-circuit current 2) Output capacitance 1) 2) nom. min. max. typ. max. max. max. nom. nom. nom. nom. nom. nom. typ. typ. 24V 24-28V 30V 3) 24.1V 10mV 100mV 100mVpp 20A 4) 17.
PAGE 7
QTD20.241 24V, 20A, DC INPUT Q-Series Fig. 5-1 Output voltage vs. output current, typ. Adjustment Range Output Voltage 28V Fig. 5-2 Output current vs. input voltage Allowed Output Current at 24V 25A 20 20 continuous short-term 24 16 12 8 4 0 5 15 10 continuous <60s 15 25 30A 20 Fig. 5-3 Bonus time vs. output power 5 Input Voltage 360 Vdc 480 Vdc Power Demand max. 840 900 Vdc Vdc Fig. 5-4 BonusPower® recovery time Bonus Time 5s <60s 10 0 Output Current 0 for typ.
PAGE 8
QTD20.241 24V, 20A, DC INPUT Q-Series 6. HOLD-UP TIME Hold-up Time DC 600V 44ms 36ms 22ms 18ms typ. min. typ. min. Fig. 6-1 Hold-up time vs. input voltage At 24V, 10A, see Fig. 6-1 At 24V, 10A, see Fig. 6-1 At 24V, 20A, see Fig. 6-1 At 24V, 20A, see Fig. 6-1 Fig. 6-2 Shut-down behavior, definitions Hold-up Time 50ms 24V, 10A, typ. 40 Intput Voltage 24V, 10A, min. 30 24V, 20A, typ. 20 - 5% Output Voltage 24V, 20A, min. 10 Hold-up Time Input Voltage 0 400 500 600 700 800Vdc 7.
PAGE 9
QTD20.241 24V, 20A, DC INPUT Q-Series 8. EFFICIENCY AND POWER LOSSES Efficiency Average efficiency*) Power losses *) DC 600V 95.0% 94.4% 7.7W 12.8W 25.5W typ. typ. typ. typ. typ.
PAGE 10
QTD20.241 24V, 20A, DC INPUT Q-Series 9.
PAGE 11
QTD20.241 24V, 20A, DC INPUT Q-Series 11. TERMINALS AND WIRING The terminals are IP20 Finger safe constructed and suitable for field and factory wiring. Quick-connect spring-clamp terminals Max. 6mm2 Max. 4mm2 Max. AWG10 Max. 2.8mm (including ferrules) Typ. 10mm / 0.
PAGE 12
QTD20.241 24V, 20A, DC INPUT Q-Series 12. FRONT SIDE AND USER ELEMENTS Fig. 12-1 Front side A Input Terminals (Quick-connect spring-clamp terminals) + Positive input – Negative (return) input ...PE (Protective Earth) input Output Terminals (Quick-connect spring-clamp terminals, two pins per pole) + Positive output – Negative (return) output C Output Voltage Potentiometer Multi turn potentiometer; Open the flap to set the output voltage. Factory set: 24.
PAGE 13
QTD20.241 24V, 20A, DC INPUT Q-Series 13. EMC The DC/DC converter is suitable for applications in industrial environment. EMC Immunity Electrostatic discharge Electromagnetic RF field Fast transients (Burst) Surge voltage on input Surge voltage on output Surge voltage on DC-OK Conducted disturbance According to generic standards: EN 61000-6-2 and EN 61800-3 EN 61000-4-2 Contact discharge 8kV Air discharge 15kV EN 61000-4-3 80MHz-2.
PAGE 14
QTD20.241 24V, 20A, DC INPUT Q-Series 14. ENVIRONMENT Operational temperature*) Storage temperature Output de-rating Humidity**) Vibration sinusoidal Vibration random Shock Altitude -25°C to +70°C (-13°F to 158°F) -40 to +85°C (-40°F to 185°F) 12W/°C 5 to 95% r.H. 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g 2 hours / axis 0.5m²(s³) 2 hours / axis 30g 6ms, 20g 11ms 3 bumps / direction, 18 bumps in total 0 to 2000m (0 to 6 560ft) 2000 to 6000m (6 560 to 20 000ft) Reduce output power according Fig.
PAGE 15
QTD20.241 24V, 20A, DC INPUT Q-Series 15. PROTECTION FEATURES Output protection Output over-voltage protection Electronically protected against overload, no-load and short-circuits*) typ. 32Vdc In case of an internal DC/DC converter defect, a max. 35Vdc redundant circuit limits the maximum output voltage. The output shuts down and automatically attempts to restart. Reverse input polarity protection included Unit does not start when input voltage is reversed.
PAGE 16
QTD20.241 24V, 20A, DC INPUT Q-Series 17. DIELECTRIC STRENGTH 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). Connect all input poles together as well as all output poles before conducting the test. When testing, set the cut-off current settings to the value in the table below. Fig.
PAGE 17
QTD20.241 24V, 20A, DC INPUT Q-Series 19. PHYSICAL DIMENSIONS AND WEIGHT Width Height Depth Weight DIN-Rail Housing material Installation clearances 65mm 2.56’’ 124mm 4.88’’ 127mm 5.0’’ The DIN-rail height must be added to the unit depth to calculate the total required installation depth. 890g / 1.96lb Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm. Body: Aluminium alloy Cover: zinc-plated steel See chapter 2 Fig. 19-1 Front view Fig. 19-2 Side view Oct. 2016 / Rev.
PAGE 18
QTD20.241 24V, 20A, DC INPUT Q-Series 20. ACCESSORIES 20.1. ZM1.WALL – WALL/PANEL 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. Fig. 20-1 Wall/panel mounting Fig. 20-2 Mounting Dimensions - Wall mounting bracket Oct. 2016 / Rev. 2.0 DS-QTD20.
PAGE 19
QTD20.241 24V, 20A, DC INPUT Q-Series 20.2. ZM14.SIDE - SIDE MOUNTING BRACKET 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. For sideway DIN-rail mounting, the removed aluminum brackets and the black plastic slider need to be mounted on the steel bracket. Fig. 20-3 Side mounting without DINrail brackets Fig.
PAGE 20
QTD20.241 24V, 20A, DC INPUT Q-Series 20.3. UF20.241 - BUFFER 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. In times when the DC/DC converter provides sufficient voltages, the buffer unit stores energy in the integrated electrolytic capacitors. In case of mains voltage fault, this energy is released again in a regulated process.
PAGE 21
QTD20.241 24V, 20A, DC INPUT Q-Series 21. APPLICATION NOTES 21.1. REPETITIVE PULSE LOADING 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®). The short-term duration is hardware controlled by an output power manager and is available on a repeated basis.
PAGE 22
QTD20.241 24V, 20A, DC INPUT Q-Series 21.2. PEAK CURRENT CAPABILITY 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
QTD20.241 24V, 20A, DC INPUT Q-Series 21.4. CHARGING OF BATTERIES The DC/DC converter can be used to charge lead-acid or maintenance free batteries. (Two 12V batteries in series) Instructions for charging batteries: a) Set output voltage (measured at no load and at the battery end of the cable) very precisely to the end-of-charge voltage. End-of-charge voltage 27.8V 27.5V 27.15V 26.
PAGE 24
QTD20.241 24V, 20A, DC INPUT Q-Series 21.5. OUTPUT CIRCUIT BREAKERS 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
QTD20.241 24V, 20A, DC INPUT Q-Series 21.7. PARALLEL USE TO INCREASE OUTPUT POWER DC/DC converters and power supplies from the same series (Q-Series) can be 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. If more than three units are connected in parallel, a fuse or circuit breaker with a rating of 25A is required on each output. Alternatively, a diode or redundancy module can also be utilized.
PAGE 26
QTD20.241 24V, 20A, DC INPUT Q-Series 21.10. BACK-FEEDING LOADS 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). This DC/DC converter is resistant and does not show malfunctioning when a load feeds back voltage to the DC/DC converter. It does not matter whether the DC/DC converter is on or off. The maximum allowed feed-back-voltage is 34Vdc.
PAGE 27
QTD20.241 24V, 20A, DC INPUT Q-Series 21.12. MOUNTING ORIENTATIONS 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. Therefore, two different derating curves for continuous operation can be found below: Curve A1 Curve A2 Recommended output current.