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Summary of Contents for True blue power TC240
- Page 1 Revision F • October 21, 2020...
- Page 2 This manual provides information intended for use by persons who, in accordance with current regulatory requirements, are qualified to install this equipment. If further information is required, please contact: True Blue Power c/o Mid-Continent Instrument Co., Inc. Attn: Customer Service Dept.
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Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1 GENERAL DESCRIPTION 4 1.1 INTRODUCTION 4 1.2 TECHNICAL SPECIFICATIONS 5 SECTION 2 PRE-INSTALLATION CONSIDERATIONS 6 2.1 COOLING 6 2.2 EQUIPMENT LOCATION 6 2.3 ROUTING OF CABLES 6 2.4 LIMITATIONS 7 2.5 MODIFICATION 8 SECTION 3 INSTALLATION 9 ... - Page 4 REVISION HISTORY Date Detail Approved 05/23/2016 Initial release Corrected typo, page 12, 4.2.3, ‘maximum.’ 5.2 Environmental Qualification Statement: Section 4, changed from F2 to F1; 06/22/2016 Section 4.5.1 Operating Low Temp changed from -55C to -40C Section 4.5.3 Operating High Temp changed from +70C to +55C. Corrected description, Figure 3.3.
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Page 5: Section 1 General Description
SECTION 1 GENERAL DESCRIPTION INTRODUCTION The model TC240 DC/DC Power Converter is a lightweight power converter that translates a direct current (DC) input of 28 volts to an adjustable 5 to 18 volt direct current (DC) output. The input operating voltage (24–32VDC) makes the TC240 suitable for nearly any common general, business, or commercial aviation application and provides an adjustable DC output voltage of 5 to 18VDC. -
Page 6: Technical Specifications
TECHNICAL SPECIFICATIONS Electrical Attributes Input Voltage Rated 28VDC nominal, Operating 24 – 32VDC. Input Current (full load) 10 amps max at nominal input voltage Output Voltage 5 – 18VDC adjustable Output Power 240 watts nominal Efficiency 95% nominal Table 1.1 Physical Attributes Weight 11.0 oz (312g) -
Page 7: Section 2 Pre-Installation Considerations
SECTION 2 PRE-INSTALLATION CONSIDERATIONS COOLING The TC240 product does not require external cooling or contain internal active cooling. Cooling of the unit occurs exclusively through passive conduction through the base or radiated cooling across the metal case. Additional cooling can be realized through convection (exposure to free moving air) or conduction (mounting to a thermally conductive metal surface). -
Page 8: Limitations
14 CFR Part 43 or the applicable airworthiness requirements. The TC240 is designed to operate at full rated load (per Figure 4.1) throughout the specified environmental temperature range (per section 5.2). Note that when operating at full power, the unit case can be hot to the touch. -
Page 9: Modification
MODIFICATION This product has a nameplate that identifies the manufacturer, part number, description, certification(s) and technical specifications of the unit. It also includes the “MOD” or modification number representing notable changes in the hardware design of the unit. Modification (MOD) 0 is the initial release of the product and is identified on the nameplate by the lack of marking on the MOD numbers 1 through 9 (i.e. -
Page 10: Section 3 Installation
This section contains interconnect diagrams, mounting dimensions and other information pertaining to the installation of the TC240 DC/DC Converter. After installation of cabling and before installation of the equipment, ensure that power is applied only to the pins specified in the interconnect diagram. - Page 11 Pin Assignment Information Positive DC input – (24-32 VDC). Connect pin B to aircraft positive 28 VDC bus. (20 Amp circuit breaker recommended) DC Output – Connect pin C as the positive output voltage (adjustable) DC Return – Connect pin A to input power return or aircraft ground. Enable –...
- Page 12 NOTE: The default output voltage is initially set to approximately 13.8VDC at the factory. The output voltage can be adjusted while the TC240 DC/DC Power Converter is connected to the mating harness and aircraft power, but disconnected from the output load. Use a multi-meter at the load end of the harness to measure output voltage.
- Page 13 DC RETURN 5-18 V OUTPUT ADJUSTMENT POT DC INPUT TC240 DC OUTPUT 6430240-1 Figure 3.3: Typical 6430240-1 Aircraft Wiring Installation – Constant On DC RETURN 5-18V OUTPUT ADJUSTMENT POT DC INPUT TC240 6430240-2 DC OUTPUT ENABLE ON/OFF Figure 3.4: Typical 6430240-2 Aircraft Wiring Installation – Remote On/Off...
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Page 14: Mounting
Refer to Section 2: Pre-Installation Considerations in regards to equipment location. The TC240 DC/DC Converter is designed for base mounting only. Four 6-32 mounting holes should be provided in the aircraft in accordance with Figure 3.5. Secure the unit with four 6-32 pan head screws, or equivalent. -
Page 15: Section 4 Operation
SECTION 4 OPERATION ELECTRICAL PERFORMANCE The TC240 is designed as a non-isolated, buck topology, solid-state switch-mode power supply. The unit converts a direct current voltage (VDC) input to a regulated 5-18 VDC output. It is capable of providing up to 240 watts of power to a variety of aircraft accessories including lights and onboard systems or portable consumer product power. - Page 16 Short Circuit and Over-Current The TC240 DC/DC Converter is capable of surviving a short circuit or over-current event without permanent damage or effect to long-term reliability. The unit can provide over its rated power output up to 277 watts for over 120 minutes (until over-temperature shutdown occurs).
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Page 17: Section 5 Conformance
No periodic scheduled maintenance or calibration is necessary for continued airworthiness of the TC240 DC/DC Converter. If the unit fails to perform to specifications, the unit must be removed and serviced by Mid-Continent Instruments and Avionics or their authorized designee.
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