The Berker 288 Series Three-Button Switch Module integrates the three core sewing functions of 1/2 Stitch, Single Stitch, and Reverse Stitch. Indicator lights provide real-time feedback on button status and operating modes. Here are the details:
Core Functions & Operation
|
Button |
Function Definition |
Operation |
Indicator Status |
Typical Use |
|
1/2 Stitch |
Outputs a stitch of half the current stitch length (e.g., 4mm → 2mm). |
Hold button + press pedal; on some models, a tap executes a half stitch. |
Lit when in half-stitch mode, off when exited. |
Precise needle alignment after thread break, small-area reinforcement. |
|
Single Stitch |
Outputs one full standard stitch. |
Tap once while stopped for 1 stitch; hold + press pedal for continuous stitching. |
Brief flash per tap (1 stitch); constantly lit when held. |
Fixing a missed stitch, seam reinforcement, precise positioning at fabric edge. |
|
Reverse Stitch |
Sews in reverse (for backtacking/reinforcement). |
Hold button + press pedal; release to resume forward sewing. |
Constantly lit while held, off when released. |
Seam reinforcement at start/end (typically 2-3 reverse stitches). |
Key Features
Indicator Function
The backlight/status light serves not only as an operational prompt but also aids in diagnosing button malfunctions (e.g., a non-lit light may indicate a loose connection or damaged button).
01
Stitch Length Linkage
The 1/2 Stitch length is automatically halved based on the system setting without altering the memorized original length; the original setting is restored upon release or when stopping.
02
Independent Operation
The Single Stitch button can be tapped while stopped (no pedal needed). Reverse Stitch requires the pedal and typically has speed limitation (~800 rpm) to prevent needle breakage.
03
Adjustable Parameters
Settings like the number of reverse stitches (2-4), front/back reinforcement mode, and the Single Stitch trigger method (half/full stitch) can be adjusted via the machine's parameter menu.
04
Application Scenarios
Garment Sewing
Precise stitching at pocket edges, tight seams for collars/cuffs, fixing missed stitches on seams.
Home Textiles/Heavy Fabrics
Reinforcing starts and ends on multiple fabric layers to prevent unraveling.
Repair & Adjustment
Using the 1/2 Stitch to align needle holes after a thread break, avoiding the need to re-sew the entire section.
Operational Notes
If the indicator is abnormal (e.g., not lighting, staying on), first check the button wiring and power supply, then investigate panel settings and potential switch component failure.
The Single Stitch button can be tapped directly for a single stitch while stopped; continuous stitching requires holding the button while pressing the pedal.
The Reverse Stitch button only engages reverse sewing while held; releasing it immediately resumes forward sewing. Control the press duration to avoid excessive reverse stitching.
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