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p/n 725.0001  REV 3.0 

 

     © 2023 TCW Technologies, LLC. 

General Product Information: 

 

The Charging System:

 

The IBBS automatically maintains its internal battery pack.  The internal charging circuit monitors 
the state of the internal battery and recharges the battery as necessary when the aircraft is 
operational.  The input current for battery recharging is nominally 3.3 amps.  Battery charging only 
occurs when the aircraft supply bus connected to pin 5 is above 13.7 volts. (charging only occurs 
when the aircraft alternator is running and has available capacity) 
 
If the internal battery is fully discharged for any reason it may require up to 120 minutes of 
recharge time with the normal aircraft bus on.   NOTE: Do not attempt to recharge the IBBS 
product by using an external lead-acid type battery charger directly connected to the input of the 
IBBS.  Battery chargers typically provide pulsating voltages that may damage the IBBS product if 
the system is not connected to a typical primary aircraft battery.   Also note, you cannot use a 
DMM connected to pins 4,5 to measure any meaningful value.  Battery voltage may be read on pin 
2 or any of the outputs pins 12-15 with the IBBS system enabled via the grounding of pin 1.    Note: 
recharging of battery is linear with respect to time.  For example, under nominal conditions a 
recharge period of 1 hour will provide 1/2 of rated product capacity. 

 
 
 
Recharge time at normal temperatures:  0C° to 40 C°    120 minutes nominal 
Recharge time at low temperatures:      -18C° to 0 C°     n 15 minutes preheat 
 

 

 

 

 

 

    -45 C° to -18C°  n 60 minutes preheat 

 
 

Back-up Power Master Switch: 

The IBBS has one input switch connection as identified in the wiring diagrams: Back-up Power 
Master.  This switch enables back-up power from the IBBS system to be available on the output 
wires when power on the normal aircraft bus falls below 11 volts.   Pin 1 is pulled to ground when 
the back-up master switch is turned on, this enables the IBBS system. 
   
If the back-up power master switch is enabled and normal aircraft power falls below 11 volts then 
the internal back-up battery will be connected to the outputs and be utilized to supply back-up 
power to the connected load. 
 
If the normal aircraft power bus is above 11 volts, then the outputs are energized with normal 
aircraft power (if the pass thru-power connections are utilized) and the back-up battery remains off-
line.  The pass thru power feature does NOT depend on the state of the back-up master switch.   If 
power is made available on the pass-thru power inputs, it will pass through and be available on the 
outputs.  This allows for automatic pass through of power during normal operation. 

 
 

Ground Based Recharging: 

To accomplish ground-based charging, connect an approved battery charger or DC power source 
(set to 14 volts) to the main aircraft battery and energize the main aircraft power bus by turning on 
the master switch, leave all other aircraft loads in their off state.   Note, the ground base source of 
power must be capable to supply the load current of all devices that can not be turned off in this 
nominal state, plus the 3.3 amps of IBBS recharge current.  Leave the ground-based charging 
system connected and powered until the IBBS system completes its recharge cycle of its internal 
battery.   See above for details on battery charging time.  If voltage monitoring of pin 2 of the IBBS 
is available a peak charging voltage of 14-15 volts will be observed as the battery reaches full 
capacity. 

Содержание IBBS-12v-6ah-CRT-V

Страница 1: ...by integrating all of the key elements in a single enclosure The IBBS system provides back up power to critical electronic loads such as EFIS GPS Autopilots Radios Electronic Ignition systems and engi...

Страница 2: ...ilots JPI and EI engine monitors SureFly electronic ignitions Lycoming EIS electronic ignitions and ElectroAir electronic ignitions IBBS must be installed using the current aircraft standards and prac...

Страница 3: ...mance Specifications and potential limitations and ratings under various conditions including environmental and application installations See Item 3 below for installation location limitations Install...

Страница 4: ...rt The vent port must be routed to the bottom or side exterior of the aircraft via the vent hose Locate a suitable flat location measuring at least 3 3 x 12 in area or in an existing avionics rack for...

Страница 5: ...atically transfers the load current on the output pins to the internal back up battery source Pin 5 nominal current draw is 3 3 amps during charging Pin 4 provides power to an internal battery heater...

Страница 6: ...re pin 2 must have an input impedance 100k ohms otherwise it will load down pin 2 and provide an artificially low voltage reading When used with the following EFIS systems wire pin 2 to the Volts2 inp...

Страница 7: ...onnection as identified in the wiring diagrams Back up Power Master This switch enables back up power from the IBBS system to be available on the output wires when power on the normal aircraft bus fal...

Страница 8: ...nominal capacity 30 C 70 of effective nominal capacity 45 C 45 of effective nominal capacity Servicing The internal battery in the IBBS system is replaceable however the IBBS product must be returned...

Страница 9: ...ck up battery are properly working 4 Verify the low voltage warning light is indicating a low voltage condition 5 Turn on the Aircraft Master Switch ensure the connected equipment remains energized Th...

Страница 10: ...nstallation approval The internal battery is not field replaceable The IBBS unit must be returned to TCW Technologies LLC for all repair and servicing requirements Endurance testing 1 Turn off the Air...

Страница 11: ...replaced with the same Part Number unit or later FAA approved revision The use of alternate models will require a new FAA installation approval The internal battery is not field replaceable The IBBS u...

Страница 12: ...all pullable breakers to the normal ON position and ensure aircraft engine is properly returned to the off position by following normal run and shut down procedures 10 After completing these tests rec...

Страница 13: ...s and transient load 30 second duration max Battery Internal sealed Li Fe PO4 nominal 12 8 volts Charger Integral high performance fast charger with cell balancing and thermal monitoring Surge Protect...

Страница 14: ...erational Performance Standards for Rechargeable Lithium Battery Systems Environmental Qualification RTCA DO 160 g B2BBBSC1EYXXFSZB IX XXXXAZ ZC TT MA3H3L3XXAX Power input 14 volts nominal 3 3 amps ch...

Страница 15: ...0 temp variation 5 Category B Humidity 6 Category B operational shock 7 Category B vibration 8 Category S curve C explosion 9 Category E waterproofness 10 Category Y fluid susceptibility 11 Category X...

Страница 16: ...wiring harness View from back of connector Pin Function 5 PWR in charge sensing 2 Batt info 3 Low Volt Warn 12 Output 13 Output 14 Output 15 Output 6 Pwr pass thru input 1 Enable backup switch 9 Groun...

Страница 17: ...p n 725 0001 REV 3 0 2023 TCW Technologies LLC 17 IBBS unit mounting footprint 11 16in 2 00in Mounting holes 0 188 4 plcs All dimensions in inches IBBS unit height 3 2 C G at center of all axis...

Страница 18: ...aus PA USA IBBS 24V 3AH CRT V Input 22 32 volts DC Output 24 volts 5amps INTEGRATED Back up Battery SYSTEM Back up power output 20 awg Main Aircraft Bus charge sense pass thru Pin Function 15 pin Male...

Страница 19: ...p Power Master Battery Info Back up power output 20 awg 22 awg 22 awg 20 awg 20 awg 20 awg 1 6 9 10 2 5 12 main power input 15 pin female Dsub connector 3 Low Voltage Warning LED NOTE Use redundant gr...

Страница 20: ...Power Master Battery Info Back up power output 20 awg 22 awg 22 awg 20 awg 20 awg 20 awg 1 6 9 10 2 5 12 main power input 15 pin female Dsub connector 3 Low Voltage Warning LED NOTE Use redundant gro...

Страница 21: ...designed and manufactured RETURN OR REPLACED COMPONENTS any item to be replaced under this Warranty must be returned to TCW Technologies in Emmaus PA or such place as TCW may designate freight prepaid...

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