SBI330 PCB Flipping Machine Setup Guide by Southern Machinery

The SBI330 is a board-handling machine that flips PCBs through 180° between SMT processes, for example for double-sided assembly, and can also run in PASS mode to simply transport boards. This SBI330 PCB flipping machine setup guide walks through the commissioning steps in the Southern Machinery operation manual (Rev. 2025). It is written for process engineers who need a flipper running correctly on the first day.

SBI330 automatic PCB flipping machine for SMT board handling

Why do flipper problems start on day one, not on day 300?

Most teams treat a PCB flipper as a simple conveyor with a twist. Then the first double-sided batch arrives and nobody knows which flipping mode matches the line rhythm, or why the rail stops short of the end position.

The hidden difficulty is that a flipper sits between machines. It has to match their transport height, hand boards over cleanly and wait for the downstream request signal. Most "machine faults" at this stage are really setup gaps: a height mismatch, an uncalibrated flip distance, or the wrong mode for the line speed.

What is the SBI330 and where does it fit in an SMT line?

According to the source manual, the SBI330 is placed in an SMT production line to flip PCBs 180° between processes. Boards enter on a belt conveyor, the track rotates to turn the board over, and the board passes to the next machine.

Three operating modes

Automatic flipping
Manual operation
PASS (pass-through), where boards are transported but not flipped

Features listed in the manual

Touch-screen control panel
Enclosed design with a rotation limiter
Parallel, smooth conveyor width adjustment by lead screw
Two flipping modes for slow or fast lines

Which specifications matter when you select it?

| Item | Specification (source manual) |

|---|---|

| Model | SBI330 |

| Transport direction | Left to right or right to left |

| Power supply | 220 V AC, 50/60 Hz, max. 300 W |

| Control | Touch screen with Panasonic PLC |

| Conveyor type | Belt |

| PCB size (datasheet) | 50 x 50 mm to 445 x 330 mm |

| PCB thickness | 0.7-30 mm (as stated in the source manual) |

| Transport height | 850-950 mm, adjustable feet |

| Dimensions (L x W x H) | 500 x 786 x 1200 mm |

| Weight | 120 kg |

Throughput and cycle time are not specified in source — contact Southern Machinery to confirm.

How do you commission it in five steps?

Use this checklist as a repeatable commissioning routine.

Step 1: Prepare the site

Use a fixed 220 V single-phase, 50 Hz supply of at least 200 W, with a reliable ground connection. The manual says to avoid locations with dust, oil mist, conductive dust, corrosive or flammable gas, moisture, vibration, strong electrical interference, high temperature, or outdoor placement.

Step 2: Match the height

Adjust the foot cups so the transport height (850-950 mm) matches the upstream and downstream machines, and make sure the unit stands level.

Step 3: Verify the signals

Open the I/O Signals screen. It shows the ON/OFF state of every PLC input and output, including board entering, board exiting, board detection, safety door, emergency stop and the downstream board request. Use it to check sensors before running boards.

Step 4: Set the high-speed flip distance

In Manual Work, press LOW speed, keep pressing Transport reversal until the rail has flipped to the other end, note the current position value and enter it as High-speed flip distance in Parameter Setting. The manual says the value is approximately 89 under normal conditions.

Step 5: Choose the flipping mode

"Just arrived reverse shipping closed" suits lines where boards are collected slowly.
"Double splice closed" suits lines where boards are collected quickly.

Also note the manual's hint: if the flip speed is set to a large value, set the acceleration time large as well.

How does the SBI330 connect to a full PCB assembly line?

The machine passes boards to the next machine and reads a downstream request signal, so it works as a link inside a line rather than a stand-alone unit. Explore the wider board handling systems, THT machines and wave soldering machines from Southern Machinery, or review inspection options in the 3D SPI and AOI category.

What is the cost logic of adding a flipper?

Use a simple formula, then replace the inputs with your own data.

Monthly saving = (manual flips avoided per month x minutes per flip / 60 x labor cost per hour) - monthly upkeep

Example only, depending on configuration and subject to final technical confirmation: 10,000 flips x 0.5 min / 60 x USD 6 per hour = USD 500 before upkeep. These inputs are illustrative, not source data or a guaranteed return.

How do you keep it running?

The manual lists weekly checks: whether the transport belt is too loose and clean, whether products are transported smoothly, and whether the belt track shows wear. Disconnect power before any maintenance. For common faults, a belt that does not run points to a faulty motor or loose belt; a dead power indicator points to a faulty switch, loose terminal or broken cord.

Southern Machinery was founded in Shenzhen in 2011 and serves 237+ global customers with SMT and THT PCB assembly automation, backed by global service, spare parts support and professional training.

FAQ

What does the SBI330 do?

It flips PCBs 180° between SMT processes, for example for double-sided assembly, and can run in PASS mode without flipping.

Which power supply does it need?

220 V AC, 50/60 Hz, max. 300 W, per the manual.

Which PCB sizes does it handle?

The datasheet in the source lists 50 x 50 mm to 445 x 330 mm.

How do I choose between the two flipping modes?

Use "Just arrived reverse shipping closed" for slowly collected boards and "Double splice closed" for quickly collected boards.

What should I quote when I contact support?

The model (SBI330) and the machine number on the nameplate.

Keep the series going

Next in this series: a pre-start safety and I/O check routine for board-handling conveyors. Bookmark this checklist and compare it with your own line.

Next step: send your line layout and board sizes through Get a quote and Southern Machinery will confirm the right configuration.