
CMS-1X Compact Motion Switch | Explosion Proof | Field Adjustable 0.1–1000 RPM | DPDT Relay
Product Summary:
The CMS-1X Compact Motion Switch by Conveyor Components Company (USA) is a durable, explosion-proof sensor designed to detect shaft motion in conveyors and rotary equipment. With a wide field-adjustable trip range from 0.1 to 1000 RPM, it offers early detection of underspeed or overspeed faults, preventing equipment damage and ensuring safety in hazardous industrial environments.
🔹 Key Features:
Explosion-Proof Housing: NEMA Type 7 & 9; 319 cast aluminum
Switch Type: DPDT relay with dry contacts
Contact Rating: 3A @ 120V AC or 30V DC; 1/10 HP at 120/240V
Electrical Input: 120V AC, non-latching output
Trigger RPM Range: Adjustable from 0.1 to 1000 RPM
Mechanism: Infrared-tracked rotating disc
Mounting: Surface mount; inline or parallel to driving shaft
Electrical Connection: ¾" NPT x 2 entries
Temperature Rating: -10°C to 55°C (T6: Max 85°C)
Certifications: UL & cUL (WYMV.E185222 / WYMV7.E185222)
🔹 Applications:
Conveyor belts and bucket elevators
Rotary valves and fans
Gear-driven or chain-driven shafts
Industrial automation in food, cement, mining, and grain industries
Safety interlocks and alarm-triggering systems
🔹 Product Benefits:
Prevents Equipment Failure: Detects shaft stoppage or under-speed before breakdown
Wide RPM Adjustment: Field-tunable from 0.1 to 1000 RPM
Certified Explosion-Proof: Ideal for use in Class I & II Div 1 & 2 hazardous zones
Flexible Integration: Supports coupling with belts, chains, or direct drives
Compact Design: Saves panel space and simplifies mounting
Maintenance-Free: Infrared sensing requires no physical contact
❓ FAQs:
Q1. What is the trip range for RPM?
It’s field adjustable from 0.1 to 1000 RPM using the internal rate control mechanism.
Q2. Is it suitable for hazardous areas?
Yes. It meets NEMA Type 7 and 9 standards for Class I & II, Div. 1 & 2, Groups C, D, F, and G.
Q3. What kind of electrical output does it offer?
A DPDT relay with dry contacts rated at 3A, suitable for triggering alarms or shutdowns.
Q4. What installation position is recommended?
The switch shaft must be mounted inline or parallel to the driving shaft for proper operation.



