- VTA02056-00
- Main Unit Power Supply
- FEATURES
- - Up to 600 Watts Output Power
- - Wide AC Input Range / EMI Filtered
- - IEC60601-1, IEC60950 Standards, compliant
- - Natural Convection Cooling
- - Powers a Remote DC/DC Multi-channel PSU and a Cooling/Heating System
- - Low Ripple & Noise @ 20 MHz B/W
- - E5CN Compact, Intelligent Digital Controller for Remote Temperature Control
- - Over Current / Short Circuit Protection
- - High Degree of Input/Output Isolation
- - Humidity Interlock Protection
- - FPD Over / Under Temperature Protection
- - AC Remote ON/OFF signal
- This low voltage, custom-designed Power Supply Unit used in Medical Electrical Equipment applications features a low profile package of 12Ó L x 7Ó W x 5.5Ó H, or 1.3Watt/in3. It has excellent load regulation, input filtering, and low output ripple as well as current limiting.
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- Input Specifications:
- Steady State Input Voltage...................................... 200 Vrms ± 10% to 240 Vrms ± 10%
- Voltage Surge.......................................................... Nominal voltage +15% for 120 sec.
- Frequency............................................................... 50 / 60 Hz, 1¯
- Inrush Current......................................................... 10 A peak maximum
- Isolation (input/output to chassis)........................... Meet IEC 60950 Specification
- Electromagnetic Interference................................... Meet EN55011, classA, EN61000-4-, 2/2/3/4/6/11, ENV50204.
- Remote ON Signal ................................................. 100 Vrms ± 10% to 120 Vrms ± 10%. Once Remote ON voltage is applied to J8,
- Enable signal (Active Low) is generated at J9.
- Humidity Interlock Protection Signal ..................... To maintain operation, contacts at J10 must Remain closed. Once J10 contacts
- open, J9 will be disabled causing Relay Unit to Power OFF.
- Each Main Unit is shipped with mating connector on J10 normally closed. To use
- Humidity Interlock feature, remove and discard mating connector and attach
- Humidity Interlock Cable.
- FPD Over/Under Temperature Protection............... Main Unit provides through a digital temperature controller an over/under
- temperature protection for FPD. As soon as FPD temperature is below or over 2
- set temperature points, Main Unit shuts-down and latches off. To reset Main Unit,
- allow FPD to return to normal temperature range and cycle Main Unit Power OFF
- for seconds and Power ON.
- Overcurrent Protection............................................Constant current limiting for output voltage ³ 19 Vdc ± 2 Vdc. PSU will latch off
- when output voltage < 19 Vdc. To restore power, cycle input power OFF then ON.
- Output Specifications:
- CH1: Powers the Relay Unit P.S. and Fans of the Cooling / Heating System.
- i.e., its output power is dependent on the input requirements of the Relay Unit, for a given load condition.
- CH2: Powers the Cooling / Heating System which maximum duty cycle is 75%. Its voltage polarity is (+) during cooling periods
- and (-) during heating periods.
- Nominal Maximum DC Load Ripple Maximum
- Voltage Current Regulation & Noise Power
- CH1: + 28VDC 10 A ±4% < 250 mVp-p
- CH2: ± 28VDC 10 A pk (7.5A avg) ±4% < 250 mVp-p
- Over-voltage Protection.......................................... <120% of nominal level
- Over-current Protection........................................... Constant current limiting down to 19 ± 2VDC, then it latch up.
- Efficiency (full load)............................................... > 80%
- Physical Specifications:
- Weight.................................................................... < 5 kgs
- Enclosure................................................................ Aluminum
- Finish...................................................................... Alodine Chemical film, Class 1, yellow
- Mounting Position.................................................. Three positions. PSU to be mounted with fins pointing UP. If oriented in any other
- position, ensure there ia a minimum pf Linear Feet per minute airflow.
- Environmental Specifications:
- Air Temperature...................................................... Operating: +10¡C to +50¡C @ Full Load, Storage: -10¡C to +60¡C
- Atmospheric Pressure............................................. Operating: 70 to 106kPa, Storage: 50 to 106 kPa
- Humidity................................................................. Operating: 30 to 85% non-condensing
- Storage: 30 to 85% non-condensing
- Reliability:
- Reliability Prediction (MIL-HDBK-217F).............. >70,000 hours
