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LEMA Power POW-0009-A User Manual

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LEMA Power User Manual
© 2024 LEMA - lema.io
St. Paul, Minnesota, USA
-
LEMA Power
User Manual
(POW-0009-A)
March 5
Document Number: DM-0006-B
WTS LLC
2327 Wycliff Street, Suite 360
Saint Paul, MN 55114
USA
www.lema.io
05-Mar-24
th
, 2024
DM-0006-B
(English)
Page | 1
(POW-0009-A)

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  • Page 1 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) LEMA Power User Manual (POW-0009-A) March 5 , 2024 Document Number: DM-0006-B WTS LLC 2327 Wycliff Street, Suite 360 Saint Paul, MN 55114 www.lema.io 05-Mar-24...

  • Page 2: Table Of Contents

    1.1 LEMA Power System Component Breakdown 2. Unpacking of LEMA Power Components Overview 2.1 Layout 2.2 Disassembly of Shipping Crate 2.3 Disassembly of LEMA Power components from crates 3. Installation Instructions 3.1 Overview 3.2 Layout 3.3 Weighted Ballast Assembly (A) 3.4 Solar Tracker Assembly...
  • Page 3 4.2 Primary Operation of the Solar Tracker 4.2.1 Solar Tracker Control Button Commands 4.2.2 Solar Tracker Photovoltaic Disconnect Switch 4.3 Primary Operation of the LEMA Power Electrical Enclosure 4.3.1 Toggling Left and Right Outlets via External Button 4.4 Check Battery Level via External Button 5.

  • Page 4: Document Revisions

    Information in this document is subject to change without notice and does not represent a commitment on the part of WTS LLC (dba LEMA). LEMA provides this document “as is,” without warranty of any kind, expressed or implied, including, but not limited to, the implied warranties of fitness or merchantability for a particular purpose. LEMA may make improvements and/or changes in this manual or in the product(s) and/or the program(s) described in this manual at any time.

  • Page 5: Overview

    (English) 1. Overview LEMA Power is a solar electricity generation system which features dual axis solar tracker which can support three PV (photovoltaic) cells yielding 1.5kW of solar energy production. The electrical enclosure features 9.6KWh rated battery storage, charge controls and a 2.4kW inverter providing 120VAC electricity out of two independently controllable outlets.

  • Page 6: Lema Power System Component Breakdown

    DM-0006-B St. Paul, Minnesota, USA (English) 1.1 LEMA Power System Component Breakdown Figure 1-2: LEMA Power System Component Breakdown (Model: POW-0009-A) A. (1x) Weighted Ballast Assembly B. (1x) Solar Tracker Mast C. (1x) Solar Tracker Goal Post D. (1x) Season Axis Linear Motor E.

  • Page 7: Unpacking Of Lema Power Components

    Overview All components of the LEMA Power System are shipped together in a singular wooden crate. The crate should be opened following the steps provided to ensure there is no harm done to the LEMA Power components or individuals who are unpacking and disassembling the crate.

  • Page 8: Disassembly Of Shipping Crate

    2.3. All the screws that need to be removed from the Shipping Crate are T-25 drive. Figure 2-2: Provided T25 screwdriver and Cutting Tool To start the disassembly, first, remove the screws securing the 3 wooden panels on the top of the LEMA Power Shipping Crate, then remove the 3 panels and set aside.
  • Page 9 DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws securing the 3 wooden cross supports near the top of the LEMA Power Shipping Crate, then remove the 3 cross supports and set aside. Figure 2-4: Removing Wooden cross supports. Figure 2-5: Top 3 Cross Supports Removed...
  • Page 10 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws securing the 6 wooden vertical supports that are located under the cross supports previously removed, then remove then 6 vertical supports and set aside.
  • Page 11 DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws securing the 2 wooden panels on the short sides of the LEMA POWER Shipping Crate, then remove the 2 panels and set aside. Figure 2-8: Removing short side panels of Crate...
  • Page 12 (English) At this point, the LEMA Power PV (Photovoltaic) Panel pallet should be completely exposed. Remove the screws securing the PV panel pallet to the cross supports below it. Screws are located along the indicated edge of the PV Panel pallet.
  • Page 13 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws securing the 3 wooden cross supports that were below the PV Panel pallet, then remove the 3 cross supports and set aside.
  • Page 14 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws securing the 2 wooden vertical supports that are located under the center cross support previously removed, then remove then the 2 vertical supports and set aside.
  • Page 15 (English) At this point, the LEMA Power Mechanical Structure pallet should be completely exposed. Remove the 4 screws securing the Mechanical Structure pallet to the cross supports below it, one screw is located on each corner of the pallet. Using multiple people, remove the Mechanical Structure pallet from the shipping crate and place in a safe location.
  • Page 16 St. Paul, Minnesota, USA (English) Remove the screws securing the 3 wooden lower cross supports that were below the LEMA Power Mechanical Structure pallet, then remove the 3 cross supports and set aside. Remove the screws from the 4 vertical corner supports. Remove 4 supports and set aside.
  • Page 17 St. Paul, Minnesota, USA (English) Remove the screws securing the 2x long sides (~11ft x ~5ft) of the LEMA Power Shipping Crate, then remove the 2x long side panels and set aside. Figure 2-20: Removing the 2x Long Sides from the Crate...
  • Page 18 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws of the wood cribbing securing the 6 weighted ballast components in the fork pocket slots of the remaining pallets. Using multiple people, slide the six weighted ballast components out and set aside.
  • Page 19 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws from all four corners of the remaining 4 pallets. Using multiple people, remove the four pallets from the Shipping Crate and place in a safe location.
  • Page 20 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Remove the screws from wood securing the end of the weighted ballast baskets. Using multiple people, remove the two weighted ballast baskets and set aside.

  • Page 21: Disassembly Of Lema Power Components From Crates

    After completing the instructions listed above in section 2.2 “Disassembly of Shipping Crate”, all the pallets containing components for the LEMA Power System should be removed from the Shipping Crate. For ease of unpacking and installation, locate the tool bag on the pallets and use the provided box cutting tool (attached to the crates on the side panels) to cut the plastic ties securing the tool bag to the pallet.

  • Page 22: Installation Instructions

    St. Paul, Minnesota, USA (English) 3. Installation Instructions 3.1 Overview To install a LEMA Power System the workflow involves the following high-level steps. Subsequent sections in this document describe the details for each step. 1. Layout 2. Weighted Ballast Assembly 3.

  • Page 23: Layout

    “pointed south.” o If the installation site is in the Southern Hemisphere, south of the Equator, the Solar Tracker should be “pointed north”. Unwrap and place the LEMA Power Electrical Enclosure within the limits described above. 05-Mar-24 Page | 23...

  • Page 24: Weighted Ballast Assembly (A)

    Orientate the base components using the provided compass in an East/West orientation as shown in Figure 3-2. 4” X 4” CRIBBING 8 feet 4” X 4” CRIBBING 4” X 4” CRIBBING 4” X 4” CRIBBING Figure 3-2: Step #1 of LEMA Power Solar Tracker Weighted ballast assembly. 05-Mar-24 Page | 24 (POW-0009-A)
  • Page 25 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Place Weighted Ballast crossmembers “A-2” (Qty. 2) on top of base components as shown in Figure 3-3. Fasten with M14 Hex head with bolts coming up from bottom. Hand tighten nuts only. Do not tighten any bolts until all components have been assembled.
  • Page 26 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Place Weighted Ballast Fork Pocket components “A-4” (Qty. 2) on top of base components as shown in Figure 3-5. Install M14 bolt (Qty. 8) through top clearance holes of Fork Pocket Tubes into base component as shown in Figure 3-5. Do not tighten any bolts until all components are assembled.
  • Page 27 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Place Weighted Ballast Baskets “A-5” (Qty. 2) on top of base components as shown in Figure 3-7. Install M8 Button Head bolts with lock washers (Qty. 12) through clearance holes of baskets into base component as shown in Figure 3-7. Hand tighten only until all components are assembled.

  • Page 28: Solar Tracker Assembly

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Fill the provided sandbags and add the sandbags to the Weighted Ballast Baskets as shown in Figure 3-9. Figure 3-9: Sandbag filled Weighted Ballast Assembly 3.4 Solar Tracker Assembly...
  • Page 29 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-10: Recommended Grounding Rod Location NOTE: It is recommended to install the copper grounding rod vertically with the whole rod contacting the soil. If unable to drive the copper grounding rod into the soil, such as in areas where rock bottom is encountered less than 2.44 meters (8 feet) below the surface, the copper grounding rod may be driven at...

  • Page 30: Mount The Solar Tracker Mast (B)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.2 Mount the Solar Tracker Mast (B) Using the provided compass, determine which direction is facing the equator. • If in the northern hemisphere (north of the equator), the equator will be directly south.

  • Page 31: Pre-Assembly

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Using the provided adjustable wrench set, remove the uppermost hex nut from the 4 threaded bolts of the Weighted Ballast Assembly, then remove the uppermost washer and split lock washer. Reassemble the flat washer, split lock washer, and hex nut as shown in Figure 3-13.

  • Page 32: Mount The Solar Tracker Goal Post (C)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.3 Mount the Solar Tracker Goal Post (C) Using the largest adjustable wrench and a 3/8-inch hex key, remove the pre-installed shoulder bolt and hex nut from the top of the Solar Tracker Mast.
  • Page 33 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Reinstall the previously removed shoulder bolt through both the Solar Tracker Mast and Goal Post. Reinstall the hex nut onto the shoulder bolt and tighten down using the largest adjustable wrench and 3/8inch hex key. Pre- and post- assembly drawings are shown in Figure 3-15.

  • Page 34: Attach The Season Axis Linear Motor (D)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.4 Attach the Season Axis Linear Motor (D) 1. Locate the Season Axis Linear Motor, the Linear Motor is labeled “Season Axis.” 2. Remove all the packing including the taped-on bag containing shoulder bolts and thread locker (Loctite 243) from the season axis linear motor.

  • Page 35: Attach The Solar Tracker Yard (E)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.5 Attach the Solar Tracker Yard (E) Using the provided 5/32-inch hex key, or a T-25 drive bit, remove the 4 bolts holding each of the 2 split rings (8 bolts total) on the Solar Tracker Goal Post, shown in Figure 3-17.

  • Page 36: Attach The Day Axis Linear Motor (F)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.6 Attach the Day Axis Linear Motor (F) 1. Locate the Day Axis Linear Motor, the linear motor is labeled “Day Axis.” 2. Remove all the packing including the taped-on bag containing shoulder bolts and thread locker (Loctite 243) from the day axis linear motor.
  • Page 37 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) This page is intentionally left blank 05-Mar-24 Page | 37 (POW-0009-A)

  • Page 38: Pv Racking Assembly Overview

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.7 PV Racking Assembly Overview Shown below in Figure 3-19 is an overview photo of the PV Racking Assembly that you’re about to complete. Figure 3-19: Overview of PV Racking Assembly...

  • Page 39: Attach The Pv Racking 6-Hole - Mec-0203 (G) And 3-Hole Supports - Mec-0204 (H)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.8 Attach the PV Racking 6-hole - MEC-0203 (G) and 3-hole Supports - MEC-0204 (H) Locate the 2x PV Racking 6-hole Supports - MEC-0203 (G) and 2x PV Racking 3-hole Supports - MEC-0204 (H) and install the 4x parts on the Solar Tracker Yard with the 18x M5 x 12mm length (T-25) bolts (using a T-25 torx bit) in the orientations shown in Figure 3-20, Figure 3-21, Figure 3-22, Figure 3-23, &...
  • Page 40 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking 6-Hole Support - MEC-0203 (G) Cross Section View Figure 3-21: Post assembly of the 1x upper PV Racking 6-hole Support - MEC-0203 (G)
  • Page 41 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking 3-Hole Support - MEC-0204 (H) Cross Section View Figure 3-22: Post assembly of the 1x upper PV Racking 3-hole Support (MEC-0204 (H)) 05-Mar-24...
  • Page 42 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking 3-Hole Support - MEC-0204 (H) Cross Section View Figure 3-23: Post assembly of the 1x lower PV Racking 3-hole Support (MEC-0204 (H)) 05-Mar-24...
  • Page 43 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking 6-Hole Support - MEC-0203 (G) Cross Section View Figure 3-24: Post-assembly of the 1x lower PV Racking 6-hole Support - MEC-0203 (G) 05-Mar-24...

  • Page 44: Attach The Pv Racking Long Supports - Mec-0205 (I)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.9 Attach the PV Racking Long Supports - MEC-0205 (I) Using 32x rivets from the PV Racking Hardware kit and the supplied hand riveter attach the 2x PV Racking Long Support - MEC-0205 (I) as shown in Figure 3-25 and Figure 3-26.
  • Page 45 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking Long Support MEC-0205 (I) POST-ASSEMBLY Figure 3-26: Post-assembly of 2x PV Racking Long Support - MEC-0205 (I) 05-Mar-24 Page | 45 (POW-0009-A)

  • Page 46: Attach The Pv Racking Disconnect Switch Supports - Mec-0200 (K)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.10 Attach the PV Racking Disconnect Switch Supports - MEC-0200 (K) Using 16x rivets from the PV Racking Hardware kit and the supplied hand riveter attach the 2x PV Racking Disconnect Switch Support - MEC-0200 (K) in the orientation shown in Figure 3-27 and Figure 3-28.
  • Page 47 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking Disconnect Switch Support - MEC-0200 (K) POST-ASSEMBLY Figure 3-28: Post-assembly of 2x PV Racking Disconnect Switch Support - MEC-0200 (K) 05-Mar-24 Page | 47...

  • Page 48: Attach The Pv Racking Outer Support - Mec-0201 (J)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.11 Attach the PV Racking Outer Support – MEC-0201 (J) Using 32x rivets from the PV Racking Hardware kit and the supplied hand riveter attach the 4x PV Racking Outer Support – MEC-0201 (J) in the orientation shown in the following figures: Figure 3-29, Figure 3-30, Figure 3-31, and Figure 3-32.
  • Page 49 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking Outer Support - MEC-0201 (J) Figure 3-30: Post-assembly of 2x upper PV Racking Outer Support – MEC-0201 (J) 05-Mar-24 Page | 49 (POW-0009-A)
  • Page 50 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 16x (total) Rivets PV Racking Outer Support - MEC-0201 (J) PRE-ASSEMBLY Figure 3-31: Pre-assembly of 2x lower PV Racking Outer Support - MEC-0201 (J) 05-Mar-24...
  • Page 51 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV Racking Outer Support - MEC-0201 (J) POST-ASSEMBLY Figure 3-32: Post-assembly of 2x lower PV Racking Outer Support - MEC-0201 (J) 05-Mar-24 Page | 51...

  • Page 52: Attach The Pv Disconnect Switch (L)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.12 Attach the PV Disconnect Switch (L) Locate the PV Disconnect Switch that was shipped within the Electrical Enclosure shown in Figure 3-33. Figure 3-33: Packaging location of PV Disconnect Switch (L) Using 6x M5 x 12mm length (T-25) bolts (using a T-25 torx bit) from the PV Racking hardware kit, attach the PV Disconnect Switch (L) to the PV Racking supports.

  • Page 53: Pre-Assembly

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PRE-ASSEMBLY POST-ASSEMBLY Figure 3-35: Assembly of 4x PV Disconnect Switch (L) 05-Mar-24 Page | 53 (POW-0009-A)

  • Page 54: Attach The Pv Panels (M)

    Figure 3-36. PV 103 PV 102 PV 101 Note: Each PV Panel’s number is labeled on the side of the PV panel in the indicated locations Figure 3-36: LEMA Power PV Panel (M) Installation order 05-Mar-24 Page | 54 (POW-0009-A)
  • Page 55 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV 102 PV 101 PV 103 8x per Panel (24x Total) Figure 3-37: Fastner Locations and PV Panel Orientation on the PV Racking 05-Mar-24 Page | 55...

  • Page 56: Attach The Pv Panel Grounding Lugs

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.14 Attach the PV Panel Grounding Lugs Using the 3x M6 bolts and 3x M6 External Tooth Locknuts, attach the 3x PV Panel aluminum grounding lugs from the PV Racking hardware kit.

  • Page 57: Mount The Solar Tracker Controller (N)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.4.15 Mount the Solar Tracker Controller (N) Using the 4x M5 bolts taped to the Solar Tracker Controller, attach the Solar Tracker Controller to the Solar Tracker Goal Post.

  • Page 58: Wiring The Solar Tracker

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.5 Wiring the Solar Tracker 3.5.1 Connect the Solar Tracker Controller cables There are 3x cables coming out of the Solar Tracker Controller as shown in Figure 3-40. A Season Axis Cable (CBL 200), a Day Axis Cable (CBL 234) and a Day Axis Limit Switch Cable (CBL 240).
  • Page 59 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) NOTE: The Season Axis Linear Motor Limit Switch is integrated into the Season Axis cable (CBL 200). However, this is not the case with the Day Axis Linear Motor. The Day Axis Linear Motor has a...

  • Page 60: Remove The Pv Disconnect Switch Cover

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.5.2 Remove the PV Disconnect Switch Cover Note: Turn the PV Disconnect Switch to the “OFF” position. Remove the 6x M5 bolts shown in Figure 3-42 from the PV Disconnect Switch Cover (be careful not to drop the cover or lose the fasteners) and set the PV Disconnect Switch Cover aside in a safe location.

  • Page 61: Wire The Pv Panels

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.5.3 Wire the PV Panels 1. Install zip ties through the slots in the PV Racking along the wire routes shown below in Figure 3-43 and keep the zip ties LOOSE or disconnected until the wire routing is complete.
  • Page 62 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 102 (+) 108 (-) Figure 3-44: PV Disconnect Wire Routing Figure 3-45: PV Disconnect Wire Routing (Left) 05-Mar-24 Page | 62 (POW-0009-A)
  • Page 63 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-46: PV Disconnect Wire Routing (Right) PV 101 Figure 3-47: PV 101 Wire Routing 05-Mar-24 Page | 63 (POW-0009-A)
  • Page 64 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) PV 103 Figure 3-48: PV 103 Wire Routing 05-Mar-24 Page | 64 (POW-0009-A)

  • Page 65: Wiring The Electrical Enclosure

    Ensure that the Electrical Enclosure is placed within 25 ft / 7.6m of the Solar Tracker LEMA Power Electrical Enclosure LEMA Power Solar Tracker Yard Orientation 25ft / 7.6m LEMA Power Max Distance Solar Tracker Center-to-Center Figure 3-49: Layout of LEMA Power Components 05-Mar-24 Page | 65 (POW-0009-A)

  • Page 66: Electrical Connections Between The Solar Tracker And Electrical Enclosure

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.6.2 Electrical connections between the Solar Tracker and Electrical Enclosure Figure 3-50: Electrical Connections between Solar Tracker and Electrical Enclosure Locate the following wires: •...

  • Page 67: Wire The Green Ground Wire To The Electrical Enclosure

    Figure 3-51: LEMA Power Electrical Enclosure Base Cover Bolt Locations 3. Route the Green Ground Wire underneath the Electrical Enclosure and attach it to the Grounding Lug shown in Figure 3-52.

  • Page 68: Wire The Copper Grounding Braid

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.6.4 Wire the Copper Grounding Braid 1. Install zip ties through the slots in the PV racking along the route shown below in Figure 3-53 and keep the zip ties LOOSE or disconnected until the wire routing is complete.

  • Page 69: Connect The Green Grounding Wire And Copper Grounding Braid To The Grounding Rod

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.6.5 Connect the Green Grounding Wire and Copper Grounding Braid to the Grounding Rod 1. Locate the grounding rod clamp from the PV Racking hardware kit. Attach it to the exposed end of the copper grounding rod.

  • Page 70: Wire The Pv Panel Power Cable - 103 (+) And 109 (-)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.6.6 Wire the PV Panel Power Cable – 103 (+) and 109 (-) Note: Check and ensure that the PV Disconnect Switch is in the “OFF” position.
  • Page 71 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 103 (+) 109 (-) Figure 3-56: Additional PV Panel Power Cable – 103 (+) an 109 (-) Wire Routing 05-Mar-24 Page | 71 (POW-0009-A)
  • Page 72 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 4. Route the end of the PV Panel Power Cable - (103 (+) and 109 (-)) labeled “TO ENCLOSURE” underneath the Electrical Enclosure and connect the 103 (+) and 109 (-) ends to the cables shown in Figure 3-57.

  • Page 73: Wire The Solar Tracker Controller Power & Data Cable - (Cbl 438)

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.6.7 Wire the Solar Tracker Controller Power & Data Cable – (CBL 438) Route and connect one end of the Solar Tracker Controller Power & Data cable - (CBL 438) underneath the electrical enclosure and into the “Controller Output”.

  • Page 74: Zip Tie All Cables, Reconnect The Pv Disconnect Switch Cover, & Reinstall The Electrical Enclosure Base Cover

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.6.8 Zip tie all cables, reconnect the PV Disconnect Switch Cover, & reinstall the Electrical Enclosure base cover Along the Solar Tracker, tighten all the loose zip ties in place and add additional zip ties as necessary. Use the previous figures above and Figure 3-60 as reference.
  • Page 75 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-62: Electrical Enclosure Base Cover reinstalled 05-Mar-24 Page | 75 (POW-0009-A)

  • Page 76: Install The Batteries

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 3.7 Install the Batteries Electrically the 8x 12v batteries are connected in series – parallel. This causes the voltage at the charge controller and inverter to be 48v. A simplified image of the connection is shown in Figure 3-63: Figure 3-63: Eight Batteries in Series-Parallel WARNING –...
  • Page 77 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-64: Lower Circuit Breakers Figure 3-65: Upper Circuit Breaker 05-Mar-24 Page | 77 (POW-0009-A)
  • Page 78 St. Paul, Minnesota, USA (English) Upon opening the LEMA Power Electrical Enclosure for the first time, inspect the unit for any loose or damaged wires or components. The batteries are labeled BAT 120, BAT 122, BAT 126, BAT 128, BAT 140, BAT 142, BAT 146 and BAT 148. The cables and battery terminals are also labeled.
  • Page 79 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Battery Cables Figure 3-67: Secured Parts and Battery Cables During Shipping Figure 3-68: Empty Battery Enclosure with taped terminals The order of battery install is: BAT 120 –...
  • Page 80 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) WARNING – The red terminal on each battery is the positive terminal. Once a cable is connected to the positive terminal, you need to make very sure that the metal ring on the end of the cable does not touch any metal components while moving the batteries.
  • Page 81 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Installed during Step 1 Do NOT install until last step. Figure 3-69: Battery Cables Installed in Series Batteries direction inside electrical enclosure. Facing Cabinet Figure 3-70: Facing Cabinet View of Battery Position The following pictures illustrate the battery installation order.
  • Page 82 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) provided parts box. Cable side 121 is placed on the red positive terminal labeled 121 (+) and then the battery is placed as shown in Figure 3-71.
  • Page 83 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-73: Install Battery BAT 126 On the ground install the black negative cable side labeled 126 from BAT 126 to the battery terminal labeled 126 (-) on the fourth battery, BAT 128.
  • Page 84 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-75: Install Battery BAT 140 On the ground install the black negative cable side labeled 142 from BAT 140 to the battery terminal labeled 142 (-) on the second top shelf battery, BAT 142.
  • Page 85 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Figure 3-77: Install Battery BAT 146 On the ground install the black negative cable side labeled 146 from BAT 146 to the battery terminal labeled 146 (-) on the fourth top shelf battery, BAT 148.
  • Page 86 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Battery Monitor Face cables in other direction so the tails face the back of the cabinet and will not contact the electrical enclosure door. Figure 3-79: Cable 127 and Cable 537 Installed on BAT 148 The final arrangement has all eight batteries loaded in the shelving.

  • Page 87: Commissioning And Operation

    (English) 4. Commissioning and Operation Once the LEMA Power unit is assembled, commissioning of the system is required. See the next section for more details on how the system works and how to use it. 4.1 First Time Commissioning & Power-Up In the following order, power the LEMA Power system on: •...

  • Page 88: Primary Operation Of The Solar Tracker

    Tracker Controller will turn on. Power is applied to the LEMA Solar Tracker via the white “POWER” toggle buttom on the bottom of the Solar Tracker Controller. The silver button with the blue ring light is the “CONTROL” Button. These buttons are shown in Figure 4-2 below.
  • Page 89 Control Power Figure 4-2: LEMA Solar Tracker Controller When the Solar Tracker Controller is powered on, it will chirp a jingle to sound that it’s on. When the software is running the Control Button will flash blue once per second indicating the software is running. After the Solar Tracker Controller is powered on, the software will automatically start the homing routine.

  • Page 90: Solar Tracker Control Button Commands

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) When the sun falls out of range, Solar Tracker will jog itself to the Sleep position. This neutral position is located where the Season Axis points to the end of its travel, toward zenith, and the Day Axis jogs to 90 degrees. The Sleep position is the hardware’s center of gravity –...

  • Page 91: Primary Operation Of The Lema Power Electrical Enclosure

    Figure 4-4: Lower-Back Electrical Enclosure Base The LEMA Power Electrical Enclosure is also built with two outlets located on the lower front of the unit. These outlets can be toggled via the External Button, which is described in the next section. The outlets are labeled for user specific power needs underneath them shown in Figure 4-5.

  • Page 92: Toggling Left And Right Outlets Via External Button

    Figure 4-5: Two AC Outlets on the Electrical Enclosure The LEMA Power Electrical Enclosure also comes with the capability to run a float pump switch. This manual is sent separately with purchase of the kit. Customers can also request this manual for later use via LEMA Support.

  • Page 93: Check Battery Level Via External Button

    WiFi. The Router also enables a user to communicate with the LEMA Power Controls System from a web browser or via the Home Assistant app which runs on Android and iOS cell phones. The LEMA Power Raspberry Pi mini-Linux computer runs the Home Assistant Service runtime and there is also a way to use the Home Assistant app to remote control the equipment over the internet via Home Assistant’s Nabu Casa remote.

  • Page 94: Wifi Hot Spot

    The WiFi advertises a SSID to join, which is based on the system’s serial number, for example, “LEMA-Power-2024Q1S009.” The password to join the WiFi is included in the Unit-Specific Sticker, which is installed on the inside of the LEMA Power Electrical Enclosure door.

  • Page 95: Home Assistant

    8. Home Assistant Home Assistant is a popular open-source home automation software system. The LEMA Power System uses this software to allow the user to see real-time production telemetry for their system and control the outlets on the front of the unit.

  • Page 96: Home Assistant Pages

    The first step is to install the Home Assistant app or pull up a browser and navigate to the Home Assistant login page. The URL for login on the local network (when you are connected to the LEMA Power’s WiFi hot spot) is: http://192.168.1.2:8123...

  • Page 97: Remote Connectivity Via Nabu Casa Web Service

    8.2 Remote Connectivity via Nabu Casa Web Service To connect to a LEMA Power Home Assistant instance from a remote location over the internet, a LEMA Power customer needs to setup a Nabu Casa account for the unit. For help on this, please contact LEMA Support.

  • Page 98: Electrical One-Line Diagrams

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 9. Electrical One-Line Diagrams The following images are an electrical one-line diagram showing how power flows through the LEMA Power unit (POW-0009-A) 05-Mar-24 Page | 98 (POW-0009-A)
  • Page 99 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 05-Mar-24 Page | 99 (POW-0009-A)
  • Page 100 © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Appendix A: LEMA Power Tool Bag A. 3 Piece Pliers Set B. 3 Piece Adjustable Wrench Set C. Imperial and Metric Hex Key Sets D. ¼” drive 90° Screwdriver (Contains T-25 Drive Bits) E.

  • Page 101: Appendix B: Hand Riveter Instruction Manual

    LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) Appendix B: Hand Riveter Instruction Manual 05-Mar-24 Page | 101 (POW-0009-A)
  • Page 102 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 05-Mar-24 Page | 102 (POW-0009-A)
  • Page 103 LEMA Power User Manual © 2024 LEMA - lema.io DM-0006-B St. Paul, Minnesota, USA (English) 05-Mar-24 Page | 103 (POW-0009-A)

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