POWER SUPPLY • • • • • • • • • • • • • 1. GENERAL DESCRIPTION Modern machines typically use maintenance-free ACmotors which are controlled by frequency converters or servo amplifiers. Such devices have an intermediate DC-bus where all individual drives are connected. The QTD20 power supply can be connected directly to the intermediate DC-bus. In case of a mains failure, the QTD20 utilizes the power from the DCbus capacitors which are charged from the kinetic energy of the motor until the motor has come to a complete stop. Intermediate DC-buses are not usually filtered and have high EMI noise superimposed. The QTD20 has a very robust input stage and an appropriate input filter included. Additionally, the L1 f + L2 Motor QTD20 is UL 508 L3 approved and is PE equipped with Motor f input fuses which are rated and tested for 600Vdc + QTD + DC Load, - Controller applications. PE PE 3. ORDER NUMBERS Power Supply Accessory 600Vdc Input Voltage Optimized for Intermediate DC-busses of Drive Systems Two Input Fuses for 600Vdc Included Efficiency up to 95% Width only 65mm 125% Peak Load Capability Active Input Transient Filter Full Power Between -25°C and +60°C Minimal Inrush Current Reverse Input Polarity Protection DC-OK Relay Contact Quick-connect Spring-clamp Terminals 3 Year Warranty 2. SHORT-FORM DATA Output voltage Adjustment range Output current Output power Output ripple Input voltage Input current Inrush current Efficiency Losses Temperature range Derating Hold-up time Dimensions continuous, 24V for typ. 4s, 24V continuous, 24V for typ. 4s, 24V 20Hz to 20MHz continuous < 1 minute or with reduced output current 600Vdc, 24V, 20A at 600Vdc at 600Vdc operational +60 to +70°C at 600Vdc wxhxd 4. MARKINGS 600V 24V Converter Wall mount bracket Side mount bracket Decoupling module Buffer unit Mar 2012 / Rev. 1.2 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

INTENDED USE The power supply shall only be installed and put into operation by qualified personnel. This power supply is designed for installation in an enclosure and is intended for the general use, such as in industrial control, office, communication, and instrumentation equipment. Do not use this device in aircraft, trains and nuclear equipment, where malfunctioning of the power supply may cause severe personal injury or threaten human life. 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...

5. INPUT VOLTAGE Input Input voltage range Allowed voltage between input and earth (ground) peak value, allowed for transients 50Hz-40kHz Steady-state value, see Fig. 5-1 Steady-state value, see Fig. 5-1 At 600Vdc input, 24V, 20A, see Fig. 5-3 See Fig. 5-2 0mF, 24V, 20A, see Fig. 5-2 20mF, 24V, 20A, see Fig. 5-2 See Fig. 5-2 Slew rate for voltage between input and earth (ground) Allowed input ripple voltage Turn-on voltage Shut-down voltage Input current Start-up delay Rise time Turn-on overshoot continuous operation max. 60 seconds or with de-rating according to Fig. 7-2 max. 60 seconds or with...

□innefUSIOfU Q-Series I 6. INPUT INRUSH CURRENT_ An active inrush limitation circuit limits the input inrush current after turn-on of the input voltage and after short input voltage interruptions. The charging current into the EMI suppression capacitors is disregarded for the first few microsecond after switch-on. Fig. 6-1 Input inrush current, typical behavior Input Voltage Output Voltage Input Current Upper curve: Medium curve: Lower curve: Time basis: All parameters are specified at 24V, 20A, 600Vdc input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

□innefUSIOfU Q-Series Output voltage Adjustment range Factory setting min. 24-28V guaranteed, multi turn potentiometer max. 30V at clockwise end position of potentiometer 24.1V ±0.2%, at full load, cold unit Line regulation Load regulation Ripple and noise voltage Output capacitance typ. 1 OOOuF The energy of the bulk capacitor on the input side wil transferred to the output to supply short load peaks. Continuous output power capability Note: derating below 480Vdc and above 840Vdc, see Fig. 7-2 _a derating is required below 480Vdc and above 840Vdc Output power Short-circuit current Note: derating...

□innefUSIOfU Q-Series Fig. 7-1 Output voltage vs. output current, typ. Output Voltage Fig. 7-2 Output current vs. input voltage Allowed Output Input Voltage Fig. 7-3 Bonus time vs. output power Bonus Time Fig. 7-4 BonusPower® recovery time Power <125% ____ Power Manager I^BonusJ | Recovery Time | i Time | I Bonus Power disabled i Bonus Power® is available as soon as power comes on and immediately after the end of an output short circuit. Fig. 7-5 BonusPower® after input turn-on Fig. 7-6 BonusPower® after output short All parameters are specified at 24V, 20A, 600Vdc input, 25°C ambient and after...

□innefUSIOfU Q-Series Hold-up Time Fig. 8-1 Hold-up time vs. input voltage Fig. 8-2 Shut-down behavior, definitions Hold-up Time Input Voltage ! j 9. DC-OK RELAY CONTACT This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back- fed voltage from a unit which is connected in parallel to the power supply output. Contact closes As soon as the output voltage reaches the adjusted output voltage. Contact opens As soon as the output voltage dips more than 10% below the adjusted output voltage. Short dips will be extended to a signal length of...

□innefUSIOfU Q-Series I 10. EFFICIENCY AND POWER LOSSES Power losses Fig. 10-1 Efficiency vs. output current at 24V Output Current Fig. 10-2 Losses vs. output current at 24V Power Losses Fig. 10-3 Efficiency vs. input voltage, 24V, 20A Fig. 10-4 Losses vs. input voltage, 24V, 20A Power Losses All parameters are specified at 24V, 20A, 600Vdc input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.