Two-stage emergency stop switch for belt alignment control has optional action angle of 12°-30° / 10°-45° / 25°-35° / 15°-45°, contactors 2NO+2NC, contact capacity 5A/380VAC and automatically return mode.
Application: Conventional belt conveyor, shuttle conveyor, feeder conveyor, bucket elevator, packaging production line, stacker-reclaimer system, crane, excavator, ship loading and unloading system, horizontal feeder, etc.
Specification:
Model | CHN-SFYS-KPT1 | CHN-SFYS-BKPT1 | CHN-SFYS-STKPT1 |
Shipping weight | 2kg | 3kg | 3kg |
Shell material *
| Cast aluminum | Cast aluminum (explosion-proof) | Stainless steel |
Stage | 2-stage | 2-stage | 2-stage |
Action angle *
| 12°-30°, 10°-45°, 25°-35° | 12°-30°, 10°-45°, 25°-35° | 12°-30°, 10°-45°, 25°-35°, 15°-45° |
Limit angle | 70° | 70° | 70° |
Contact type
| 2NO+2NC | 2NO+2NC | 2NO+2NC |
Contact capacity
| 5A/380VAC | 5A/380VAC | 5A/380VAC |
Return mode
| Automatically return | Automatically return | Automatically return |
Distance between vertical roll and belt
| 50-100mm | 50-100mm | 50-100mm |
Max. distance between two switches | 50m | 50m | 50m |
Working temperature | -20~+50℃ (-4~+122℉) | -20~+50℃ (-4~+122℉) | -30~+60℃ (-22~+140℉) |
Working humidity | ≤85% | ≤85% | ≤85% |
Working life | ≥1million times | ≥1million times | ≥1million times |
Protection class | IP67 | IP67 | IP67 |
Cable length | 1.5m | 1.5m | 1.5m |
Dimension (unit: mm):

Installation:

Tips: Installing an emergency stop switch for belt alignment control
The working principle of the emergency stop switch for belt alignment control is that when the conveyor belt deviates, the belt touches the vertical roll of the switch. When the vertical roll deflects to the first stage action angle, the first group of contact switch operates and outputs a alarm signal. If the belt continues to deviate so that the vertical roll of the emergency stop switch reaches the second stage action angle, the second group of contact switch sends a stop signal. If it is connected to the control circuit, it can realize automatically shutdown.
Installation method:
- Fix the emergency stop switch on the bracket and weld it to the rack.
- Set the two-stage belt alignment switches on both sides of the conveyor belt. The vertical roll should be perpendicular to the plane of the edge of the conveyor belt.
- The distance between the vertical roll of the emergency stop switch and the edge of the conveyor belt is L=50 ~ 100mm.
- A pair of emergency stop switches can be installed at every 50m position of conveyor belt.
Emergency stop switch for belt alignment control is a 2-stage belt anti-alignment switch. It has optional two-stage action angle of 12°-30° / 10°-45° / 25°-35° / 15°-45°, 2NO+2NC contactors with contact capacity 5A/380VAC, optional shell cast aluminum or stainless steel, protection class IP67, working life over 1 million times.