What It Is
The Smart Automatic Reversal system is a PLC-controlled anti-jam protection feature that continuously monitors motor current and torque. When an overload or jam is detected, the system automatically reverses the shafts to clear the obstruction and resumes forward operation — all without operator intervention. Unlike conventional shredders that simply stop on overload and require manual clearing, this intelligent system keeps your throughput running.
How It Works
The PLC continuously monitors motor current draw and shaft torque in real time. When values exceed the programmed threshold (indicating a jam or overload), the system executes a controlled sequence:
Forward rotation stops immediately
Shafts reverse for a calibrated duration to release the material
Forward rotation resumes automatically
If the jam persists after multiple reversal attempts, the system alerts the operator
Reversal parameters (current threshold, reversal duration, number of attempts) are fully adjustable via the PLC to match the specific material and application.
Key Benefits
Eliminates manual jam clearing — reduces downtime and keeps operators away from the shredding chamber.
Protects the drivetrain (motor, gearbox, shafts) from sustained overload damage.
Maximizes throughput by automatically resolving most jams in seconds.
Fully programmable thresholds adapt to different materials and operating conditions.
Works in concert with the Anti-Shock Clutch System for two-level overload protection.
Applications
Mixed waste streams with unpredictable contaminants
C&D waste (construction and demolition debris)
Bulky waste and furniture
Industrial waste with metal contaminants
WEEE (electronic waste)
Biomass with soil and stones
Availability
Standard feature on all PLC-equipped models across the PR, D, and Q series.