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EEZ BB3 two channel kit assembly instructions
Last modified: 2021-06-12
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Introduction
Instructions presented in this document are related to BB3 – Two Channel (Full) kit offered through a
crowdfunding campaign.
The EEZ BB3 kit is not an end-user product. As such, it has not been subjected to any conformance
testing, and it may not comply with some or any technical or legal requirement that are applicable to fin-
ished products including, without limitation, directives regarding electromagnetic compatibility and recy-
cling for instance (WEEE, FCC, CE or UL). Assembling and using the EEZ BB3 requires an under-
standing of electronic circuits and basic computer programming skills.
If you need assistance, please contact us using this
post your problem on the EEVblog forum here. Or, feel free to open a New issue on GitHub here, but
please check first to see whether a similar issue already exists).
The only tool required for the kit mechanical assembly is a medium Phillips head screwdriver. Of
course, a multimeter for checking the wiring and voltage at a few points during assembly is recom-
mended.
Before you start
We made our best effort to make your EEZ BB3 kit complete and functional. However, please note that
due to limited resources, the kit is not completely and thoroughly tested. Basic tests were performed on
the core and power modules and the cooling fan.
Modules are tested on our "testbed", but not using a wire harness, with the AC/DC modules that come
with your kit. Therefore, it's highly recommended that you check visually, mechanically and with an
ohmmeter that cables are properly assembled before you proceed with final assembly (consult the
harness
section).
The basic testing covered communication over Ethernet, fan control, power control, touchscreen func-
tionality, beeper, TFT display and output voltage and current programming over the full range (i.e. up to
40 V and 5 A with connected load). The AC/DC modules are capable of working with both 115 and
230 VAC.
Kit version identification
Starting in April 2021, the BB3 kit with new versions of the modules is on sale. They are most easily
recognized by the blue color of the PCBs (Fig. 3) as opposed to the crowdfunding version which has
green PCBs. The kit version with the new modules for simplicity will be listed below according to the
MCU module version number which is r3B3 (the previous version is r2B4).
If you own the r3B3 version, consider the following:
•
The SDcard comes already mounted on the MCU module. It is recommended that you remove
the SDcard before mounting the front panel (Fig. 12, 13, 14).
•
The holes on the front panel for the Standby LED and PE terminal can be too tight, which can
make it difficult to mount the front panel because the LED indicator can move in the process
from the center. If this happens carefully from the back of the front panel with a screwdriver
return the LED indicator to sit in its hole.
•
Your MCU module may have come with v1.6 firmware installed. If this is the case you will need
to update it to v1.6.1 or later otherwise working with power modules (DCP and DCM) will not be
possible (see resolved issue #172).
•
The AUX-PS module (r3B5) is missing one mounting hole (above the AC inlet). Therefore for PE
connection to the chassis a separate wire is used (Item R, Fig. 5)
•
Top cover (Item 1, Fig. 1) has two additional holes for better fixation to the front and back panel.
form
or join us on our Discord server (invitation) or
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Summary of Contents for EEZ BB3
- Page 1 Kit version identification Starting in April 2021, the BB3 kit with new versions of the modules is on sale. They are most easily recognized by the blue color of the PCBs (Fig. 3) as opposed to the crowdfunding version which has green PCBs.
- Page 2 EEZ BB3 two channel kit assembly instructions Field report update (r2B4 version) A large number of backers have already successfully completed their EEZ BB3 kit. In a small number of cases, they encountered issues with the supplied parts. The issues seen are: •...
- Page 3 EEZ BB3 two channel kit assembly instructions Fig. 1: BB3 kit content (r2B4)
- Page 4 EEZ BB3 two channel kit assembly instructions Fig. 2: BB3 kit content (r2B4 base modules, DCP power modules and AC/DC converters)
- Page 5 EEZ BB3 two channel kit assembly instructions Fig. 3: r3B3 base modules (SD card is already installed on the MCU module) Plastic bag contents Before start assembly please take some time to check that the contents of the plastic bag (item 6) in- clude everything listed below.
-
Page 6: Bottom Plate
EEZ BB3 two channel kit assembly instructions Power module DC input cable Blind module front panel 16-pin IDC flat cable Encoder knob 5-pin push-in connectors Cable ties ×6 Hexagonal M3×6 mm metal spacers ×13 Mounting set for AC power inlet M3×4 mm screws ×13... - Page 7 EEZ BB3 two channel kit assembly instructions Fig. 6: Enclosure bottom plate The M4 screws mount into the larger holes as shown in Fig. 7. Once a foot is secured, the rubber part can be pushed in to hide the screw head.
- Page 8 EEZ BB3 two channel kit assembly instructions Fig. 8: Front foot mounting completed Rubber inserts inserted to different depths may cause the bottom plate not to be leveled. If you wish to correct the leveling now, press carefully along the ends of the bottom panel until a satisfactory result is obtained.
- Page 9 EEZ BB3 two channel kit assembly instructions Fig. 9: MCU module r2B4 with mounting parts Attach the hexagonal metal spacers (J) using screws (L) to the four holes at the corners of the module. Repeat the same procedure on the BP3C backplane shown in Fig. 10.
- Page 10 In order to mount the front panel to the bottom panel, it will be necessary to connect the TFT display to the MCU module, first. This is the most delicate operation in the entire EEZ BB3 assembly procedure, so it requires extra care.
- Page 11 EEZ BB3 two channel kit assembly instructions Fig. 12: Inserting display flexible cable into 40-pin FFC connector...
- Page 12 EEZ BB3 two channel kit assembly instructions Fig. 13: 40-pin FFC connector in lock position Before proceeding to fix the front panel to the bottom plate, check that the encoder shaft and user switch are in place (Fig. 14). Additionally, check that the user switch is functional (Fig. 15); that it is not...
- Page 13 EEZ BB3 two channel kit assembly instructions Fig. 14: Checking that the encoder shaft and user switch are in place Fig. 15: Checking that the user switch works (that it is not pinched) Fig. 16: Fixing the front panel from below to the bottom plate...
- Page 14 EEZ BB3 two channel kit assembly instructions Fig. 17: Fixing the front panel from the side to the bottom plate Fix the front panel to the bottom plate (Fig. 16) with two M3 screws (item M, Fig. 4.) in the positions shown in Fig.
- Page 15 EEZ BB3 two channel kit assembly instructions Installing AUX-PS module Remove the AUX-PS module from the package and attach the hexagonal metal spacers (J) using screws (L) in the five holes of the module. Fig. 19: AUX-PS module with mounting parts The AUX-PS module should be attached to the rear panel with two screws and nuts (contents of bag K in Fig.
- Page 16 EEZ BB3 two channel kit assembly instructions Fig. 20: Mounting AUX-PS module to the rear panel Continue to install the AUX-PS module by carefully inserting it from the back, making sure that the standby LED and power switch locate in their holes in the front panel. When the AUX-PS module is in -...
- Page 17 EEZ BB3 two channel kit assembly instructions Fig. 21: Fixing the AUX-PS module on the bottom plate For the r3B3 version, you can now connect the PE wire (item R, Fig. 5) to the AUX-PS module and at- tach one end to the TFT touchscreen display using item P and Q (Fig. 23). Note that item J in this case is not fixed on the other side to the AUX-PS module, but only touches it.
- Page 18 EEZ BB3 two channel kit assembly instructions Fig. 23: r3B3 PE wire attachment to the back of the display Rear panel mounting and cable connection Attach the rear panel to the bottom plate. This will require three screws (item M, Fig. 4).
- Page 19 EEZ BB3 two channel kit assembly instructions Fig. 25: Ethernet connection mounting parts First, carefully insert the plug at one end of the Ethernet patch cable into the MCU module and then se- cure the other end to the rear panel. Now connect the cooling fan connector to the AUX-PS module as shown in Fig.
- Page 20 EEZ BB3 two channel kit assembly instructions Fig. 27: Mounted Ethernet patch cable Finally, connect the AUX-PS and MCU module with a 16-pin IDC flat cable (item F, Fig. 4) as shown in Fig. 28. Fig. 28: 16-pin IDC cable mounting...
- Page 21 EEZ BB3 two channel kit assembly instructions First power up and installation of power modules Fig. 29: Test power up without peripheral modules or micro SD card The MCU module comes with the firmware installed. It is now possible to do a trial power-up. Connect the power cord used in your country (not included in this kit) and turn on the unit using the front panel power switch.
- Page 22 Chapter 13 of the User manual. A number of BB3 r2B4 kits (green PCBs) are shipped with the new version of DCP405 power modules (r3B3, blue PCBs). Before proceeding with the installation of these modules, download the firmware v1.6.1 or later, otherwise BB3 will not be able to work normally (it will constantly restart).
- Page 23 EEZ BB3 two channel kit assembly instructions Fig. 31: Mean Well AC/DC converters and related wiring...
- Page 24 EEZ BB3 two channel kit assembly instructions Fig. 32: Mean Well AC/DC converters with installed terminal covers and cables The Mean Well converters are mounted on the top cover. The mounting frame (item 5) is used for this. Each converter is attached to the mounting frame with two screws (item M, Fig. 4) as shown in Fig. 33.
- Page 25 EEZ BB3 two channel kit assembly instructions Fig. 33: Mean Well AC/DC converters with mounting frame When the converters are attached to the mounting frame, the top cover should be placed over them as shown in Fig. 34. Secure it with four screws (item M, Fig. 4).
- Page 26 EEZ BB3 two channel kit assembly instructions Fig. 34: Top cover placed on top of AC/DC converters Place the top cover with the mounted converters behind the rear panel and plug the AC power connec - tor into the AUX-PS module as shown in Fig. 35. You can now also attach the PE cable to the corre-...
- Page 27 EEZ BB3 two channel kit assembly instructions Fig. 35: AC power input and PE connections Use cable ties (item I, Fig. 4) to secure the cables. An example is shown in Fig. 36.
- Page 28 EEZ BB3 two channel kit assembly instructions Fig. 36: Cable ties To install the power module, four screws will be required (two for each module). Unless you have also purchased a third module, the blind front panel (item E, Fig. 4) will be used to close the third slot (Fig.
- Page 29 EEZ BB3 two channel kit assembly instructions...
- Page 30 EEZ BB3 two channel kit assembly instructions...
- Page 31 EEZ BB3 two channel kit assembly instructions Fig. 37: Power modules mounting parts Fig. 38: Power module input connections...
- Page 32 EEZ BB3 two channel kit assembly instructions Fig. 38: Power module input connections After connecting the power and the PE cable, insert the module into the BP3C backplane (Fig. 39)
- Page 33 EEZ BB3 two channel kit assembly instructions Fig. 39: Power module insertion Once the power module is securely inserted into the backplane slot, it should be fixed with two screws. First install the screw in the lower hole, and then a second screw into the upper hole.
- Page 34 EEZ BB3 two channel kit assembly instructions Fig. 40: Power module fastening Before closing the enclosure, make sure that the power module's connecting cables do not interfere with the cooling fan (Fig. 41). Fig. 41: Power module wiring check...
- Page 35 EEZ BB3 two channel kit assembly instructions Carefully fold the cables coming from the Mean Well converter and place the top cover on the enclo - sure. Secure it with four screws (item M, Fig. 4): first to the rear panel and then to the front panel.
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