Midcontinent MD23-104 User manual

User Guide
For
MD23-104
True Blue Power
Gen5 Lithium-ion Battery Monitor
powered by
Rev Date Detail Approved
1 01/04/2022 Initial release. BAW
This manual provides information intended for use by persons who, in accordance with current
regulatory requirements, are qualified to install this equipment. It is a supplement to the MD23
Installation Manual and Operating Instructions, p/n 9019161.
If further information is required, please contact Mid-Continent Instruments and Avionics.
Mid-Continent Instruments and Avionics Mid-Continent Instrument Co., Inc.
dba Mid-Continent Instruments and Avionics
User Guide UG104 9400 E. 34th Street N.
Revision 1 Wichita, KS 67226 USA
ph [phone]
www mcico.com

MD23-104
User Guide
Mid-Continent Instruments and Avionics 2 User Guide UG104, Revision 1
January 4, 2022
1.1 INTRODUCTION
The model MD23-104 battery monitor is specifically designed for the True Blue Power Gen5
Advanced Lithium-ion batteries series. This standard 2-inch (2-¼”) panel-mounted instrument
displays key performance and status data from either one or two Gen5 batteries. Based on Mid-
Continent Instruments and Avionics patented FLEXTM Custom Function Display, this FAA and
EASA TSO-approved instrument brings a highly capable and modern addition to the cockpit to
display required information and provide useful supplementary functions.
This User Guide is a supplement to the Installation Manual and Operating Instructions (IM),
MCIA part number 9019161. The IM contains all information associated with the standard
product, including installation procedures, product specifications, operating instructions,
certification data, and maintenance requirements. This User Guide provides additional
information associated with the specific features of the multifunction digital counter drum
altimeter. It addresses product identification, electrical pinout, initial configuration setup, and in-
flight user operation.
1.2 PRODUCT IDENTIFICATION
Each MD23 is comprised of certified hardware and certified software. Within the context of the
certified software is a set of data items that can configure and customize the behavior of the unit.
This set of data is referred to as a Custom Instrument Definition, or a CID file. The CID file for
this instrument is pre-loaded and may be available for future updates via a standard USB flash
drive through the programming port on the rear of the unit.
A unique CID number has been assigned specifically to this application. The CID is identified by
its two-digit number and an alphabetic character representing the CID version, starting with “A”.
The identification of the hardware, software, and CID configurations are listed below. Both the
software version and the CID can be viewed on the Introduction Screen during the first few
seconds of applying power to the unit. This information can also be accessed on the Info page of
the Options Menu during Flight Mode.
1.3 PRODUCT FUNCTION
The CID identified within this User Guide is designed to function as a battery monitor for the True
Blue Power Gen5 family of Advanced Lithium-ion Batteries. It uses ARINC 429 inputs from the
battery to display multiple parameters such as voltage, current, state of charge, temperature and
more. The unit can be configured upon installation to monitor one battery or two. Additional
details can be found on a secondary status page including Remaining Life, Battery Capacity and
detailed fault call-outs, when present. Variable thresholds and alerts, if programmed on the
battery, will also be displayed. All ARINC data provided by the Battery 1 inputs will be re-
broadcast on the ARINC output as well.
Unit Versions
Hardware Part Number Software Version CID
6420023-1 1.0.2, or late
r
04
A
,or late
r

MD23-104
User Guide
Mid-Continent Instruments and Avionics 3 User Guide UG104, Revision 1
January 4, 2022
2.1 CONNECTOR PINOUT
For standard pre-installation and installation instructions, including location, cable harness
assembly, pneumatic inputs (if applicable), mounting, and others, please refer to the IM.
Pinout identification specific to this CID is listed in the table below. A brief description is provided.
Further definition of the inputs and outputs should be documented in the technical requirements
and/or statement of work and are not provided within this User Guide.
Connector Pinout
Pin Description Function
1 Ground Power return; connect to a/c gnd
2 ARINC Out (A) Rebroadcast of
A
RINC In 1 data
3 ARINC Out (B) (see pin 2)
4 Dimmer Input 5, 14, or 28VDC input (if used)
5 ARINC In 1(A)
A
RINC In from Battery 1
6 ARINC In 2(A)
A
RINC In from Battery 2 (if used)
7 Reserved
8 Reserved
9 Reserved
10 Reserved
11 Reserved
12 Reserved
13 Reserved
14 ARINC In 1(B) (see pin 5)
15 Reserved
16 ARINC In 2(B) (see pin 6)
17 Reserved
18 Reserved
19 Power Input +10-32VDC
20 Reserved
21 Reserved
22 Reserved
23 Reserved
24 Reserved
25 Reserved
26 Reserved
Table 1 Unit Connector Pin Identification

MD23-104
User Guide
Mid-Continent Instruments and Avionics 4 User Guide UG104, Revision 1
January 4, 2022
3.1 CONFIGURATION AND SETUP
Enter Configuration Mode by pressing and holding the Control Knob while applying power to the
unit. For configuration and setup of standard unit functions, including dimming control options
and dimming curve definition, please refer to the IM.
Configuration settings specific to this CID are found within the User Configuration menu option.
The only user configuration item is for Battery Count. Select the number of batteries that will be
connected to the MD23 TBX Battery monitor.
4.1 OPERATION
For operation of standard unit functions, including the Options Menu, manual brightness control,
Info page, and others, please refer to the IM.
For details associated with the custom functions beyond those identified here, refer to the True
Blue Power Install Manual and Operating Instructions for the specific battery associated with
your application.
FLIGHT MODE
In Flight Mode, the display is presented as shown in the example figures below.
Turning the Control Knob right or left changes the display from Page 1 to Page 2.
(power on screen)

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January 4, 2022
(page 1 – one battery) (page 2 – one battery)
(page 1 – two batteries) (page 2 – two batteries)
Individual elements are defined as follows:
 Page 1
o Status: Displays battery status: Active, Fault, Service, Invalid, or No Start
o Charge %: Displays current state of charge. 0-100%
 Number is amber if state of charge is below battery-programmed minimum
 Battery Icon represents state of charge and depletes in relation to charge %
 Icon is amber if state of charge is below battery-programmed minimum
 Icon contains green lightning bolt when battery is charging
o Volts: Current voltage of the battery
 Number turns amber when under-voltage or over-voltage
o Amps: Discharge or charge current (discharge current denoted as negative (-))
o Temp: Internal temperature of the battery, in degrees Celsius
 Number is red if temperature exceeds the upper limit of the battery
 Heater Icon represents the current state of the battery heater
 Icon is a gray horizontal bar if heater is inactive/offline
 Icon is a gray bar with squiggles if heater is active/available
 Icon is a white bar with squiggles if heater is current on/heating
 Page 2
o Life: Remaining percentage between original max and battery-programmed
end of life capacity. 0-100%
o Capacity: Current maximum capacity of the battery. Number is amber if capacity
is below the battery-programmed end of life capacity.
o Faults: Reported battery faults. “(None)”, if none.

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January 4, 2022
USER OPTIONS
Pressing and holding the Control Knob for three (3) seconds will activate the Options Menu.
The manual brightness adjustment and info page are described in the IM. The Options Menu
or User Options items will close and return to the active display after five (5) seconds if no
activity is recorded.
When highlighted and selected, the User Options item will open a new page and display the
available options available to the pilot. The only User Option for this instrument is for Battery
Info, which when selected will display the battery’s current software version.
Highlight and select Exit to return to the Options Menu or simply wait five (5) seconds and the
unit will return to the active Flight Mode display.
5.1 CONFORMANCE
For standard conformance items such as qualification levels and software updates, please refer
to the IM.
INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
No periodic scheduled maintenance or calibration is necessary for continued airworthiness of
the MD23 Custom Function Display, unless specified in the aircraft maintenance procedures.
The unit display can be cleaned using a lint-free cloth moistened with water. No chemicals
should be used to clean the display.
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. Other than software version
updates, there are no repairable parts or processes available to be performed in the field.