Installation and Debugging Instruction Manual for Laser Protector of Bending Machine

Faithful English version of the original notes. Meaning preserved without additions or changes.

Laser protector installed on a bending machine — overview (Figure [1])
Figure [1]. Overview.

1. Unboxing

The complete set includes: emitter, receiver, data cables, mounting brackets and screws, and the user manual.

2. Assemble the Receiver Side

  • Take the bracket out of the packing carton and separate the receiver mounting bracket.
  • Using a suitable hex key, loosen the four receiver fixing screws. (Note: the two fixing bars/blocks at the bottom must not fall off.)
  • Remove the receiver. Slide the tail-end T-slot of the housing in from the cross-arm side of the bracket, align with the fixing bars at the base, and insert to the center position.
  • Tighten the four receiver fixing screws with a wrench.
Receiver side assembly illustration (Figure [6])
Figure [6]. Receiver subassembly illustration.

3. Assemble the Emitter Side

  • Take out the emitter mounting bracket on the other side and, using the same hex key, loosen the four emitter fixing screws. (Note: the two fixing bars/blocks at the bottom must not fall off.)
  • Loosen the upper fine-adjustment screw on the emitter bracket with a suitable hex key.
  • Loosen the left and right fine-adjustment screws with a suitable hex key.
  • Remove the emitter. Slide the tail-end T-slot in from the cross-arm side of the bracket, align with the fixing bars at the base, and insert to the center position.
  • Tighten the four emitter fixing screws with a wrench.
Emitter side assembly illustration (Figure [17])
Figure [17]. Emitter subassembly illustration.

4. Mounting & Wiring

  • Take one bracket. Find a suitable mounting location on the press brake, mark the position with a marker, then drill and fasten.
  • If there is not enough room on the press brake to mount the bracket, you may use the method shown on the right to fasten it.
  • After both brackets are fastened, take out the data cables. Fix the 9-pin aviation connector to the emitter and the 15-pin aviation connector to the receiver. Route both cables into the press brake electrical cabinet.
Fixed wiring on a bending machine — 9-pin to emitter, 15-pin to receiver (Figure [15])
Figure [15]. Fixed wiring.

5. Coarse Alignment

  • Using a suitable hex key, loosen the five screws on the vertical arm of the bracket (three in front and two at the back). Move the E1 laser beam vertically to a position 3 mm below the press brake blade edge, then tighten the screws.
  • Loosen the two fixing screws on the cross arm of the bracket. Move the E1 laser beam laterally to the centerline of the press brake blade opening, then tighten the screws.
Coarse alignment context (Figure [22])
Figure [22]. Coarse alignment context.

6. Fine Alignment

  • If the laser beam is lower than the receiving hole, adjust the upper fine-adjustment screw with a suitable hex key.
  • If the beam is to the right of the receiving hole, adjust the right fine-adjustment screw.
  • If the beam is to the left of the receiving hole, adjust the left fine-adjustment screw.
Fine alignment context (Figure [3])
Figure [3]. Fine alignment context.

7. Record the Slider Position

After the protector is properly adjusted, use the pointer block to record the bracket’s vertical position, so that after changing the die the bracket can be quickly adjusted back to the correct position.

Record the bracket's vertical position with the pointer block (Figure [5])
Figure [5]. Record the slider/vertical position.

Emitter & Receiver — Illustration When Test Is Normal

The following indicates the condition when the emitter and receiver are in a normal test state.

Normal/permission state illustration (Figure [8])
Figure [8]. Status illustration.
Status/interlock illustration (Figure [10])
Figure [10]. Interlock illustration.

Connector Pinouts

Emitter Connector Terminals

PinFunctionColor
1Power supply positive, +12–24 V DCBrown
3Power ground (GND)Blue

Receiver Connector Terminals

PinFunctionSignal levelColor
1Power supply positive, +12–24 V DC—Red
2Power ground (GND)—Black
3Emitter power output, +12–24 V DC—White
4Foot pedal inputActive-highGray
5Slow-down speed 1 inputActive-highBrown
6Slow-down speed 2 inputActive-highOrange
7Fast-down permit (FA) outputHigh-level outputYellow
8OSSD2 outputHigh-level outputPink
9OSSD1 outputHigh-level outputBlue

Figure Index (Images 1–22)

Figure [1] — Overview
[1] Overview.
Figure [2] — Finger protection solution (23)
[2] Finger protection solution (23).
Figure [3] — Finger protection solution (22)
[3] Finger protection solution (22).
Figure [4] — Finger protection solution (22) — alt view
[4] Same as [3], alternative view.
Figure [5] — Device variant (21)
[5] Device variant.
Figure [6] — Installation & commissioning (20)
[6] Installation & commissioning.
Figure [7] — Troubleshooting & inspection (19)
[7] Troubleshooting & inspection.
Figure [8] — Safety interlock (18)
[8] Safety interlock.
Figure [9] — Manufacturer reference (17)
[9] Manufacturer reference.
Figure [10] — Safety interlock (16)
[10] Safety interlock.
Figure [11] — Quotation sample (15)
[11] Quotation sample.
Figure [12] — Domestic alternatives (14)
[12] Domestic alternatives.
Figure [13] — Renovation and upgrade (13)
[13] Renovation & upgrade.
Figure [14] — Finger protection solution (12)
[14] Finger protection solution.
Figure [15] — Fixed wiring (11)
[15] Fixed wiring.
Figure [16] — Troubleshooting & inspection (10)
[16] Troubleshooting & inspection.
Figure [17] — Installation & commissioning (9)
[17] Installation & commissioning.
Figure [18] — Reference price (8)
[18] Reference price.
Figure [19] — Safety upgrade (7)
[19] Safety upgrade.
Figure [20] — Laser guard price (6)
[20] Price reference.
Figure [21] — Laser safety retrofit (5)
[21] Laser safety retrofit.
Figure [22] — Hydraulic press brake laser safety (4)
[22] Hydraulic press brake laser safety.

Source: Installation Guide for Laser Photoelectric Protection Device of Bending Machine from DAIDISIKE.

AuthorDAIDISIKE Safety Engineering Team
Reviewed byChief Safety Engineer · 20+ years industrial safety · IEC 61496 reference
Last verified2025-01
Foshan DAIDISIKE Optoelectronics Technology Co., Ltd.
inXfrWA✉︎PTG