E38S Rope Pull Encoder 5-24V NPN 600/1000PPR Distance Sensor
E38S Rope Pull Encoder 5-24V NPN 600/1000PPR Distance Sensor
E38S Rope Pull Encoder – Precision Distance Measurement
The E38S Rope Pull Encoder by CNMAWAY is a high-performance incremental position sensor designed for accurate linear distance measurement in industrial and automation applications. Available with measuring rope lengths of 1M, 1.5M, and 2M, this encoder outputs clean NPN pulse signals at 600 PPR or 1000 PPR, making it ideal for CNCs, automated machinery, hydraulic cylinders, conveyor systems, and more.
Key Features
- Wide Input Voltage: 5–24V DC supply for universal compatibility with PLCs and control systems
- High Resolution Options: Choose 600 PPR or 1000 PPR for the accuracy your application demands
- NPN Open-Collector Output: Compatible with most standard industrial controllers and counters
- Durable Alloy Construction: Robust housing withstands demanding workshop and factory environments
- Multiple Rope Lengths: 1M, 1.5M, and 2M variants available to suit different measurement ranges
- Low Current Draw: Operates at just 300 mA for energy-efficient continuous operation
- CE Certified: Meets applicable safety and electromagnetic compatibility standards
- 1-Year Warranty for added peace of mind
Specifications
| Model | E38S Rope Encoder |
| Measuring Distance | 1M / 1.5M / 2M (selectable) |
| Input Voltage | 5–24V DC |
| Output Type | NPN Open-Collector |
| Resolution | 600 PPR / 1000 PPR |
| Current Draw | 300 mA |
| Material | Alloy |
| Certification | CE |
| Country of Origin | Made in Mainland China |
What Is a Rope Pull Encoder?
A rope pull encoder (also called a draw-wire or string pot encoder) converts linear movement into rotational pulses. As the rope extends or retracts, the internal spool rotates, generating precise incremental signals. This makes it an excellent choice for measuring stroke, position, or displacement in tight spaces where traditional linear sensors can't fit.
Typical Applications
- CNC machine tool positioning
- Hydraulic and pneumatic cylinder stroke measurement
- Conveyor belt and elevator position tracking
- 3D printer and robotic arm feedback
- Industrial automation and process control
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Frequently Asked Questions
Q: What is the difference between 600 PPR and 1000 PPR on this rope encoder?
A: PPR stands for Pulses Per Revolution. A 1000 PPR encoder generates more pulses per rotation than a 600 PPR model, resulting in finer positional resolution. Choose 1000 PPR for high-precision applications requiring detailed position feedback, and 600 PPR for general-purpose distance measurement where slightly lower resolution is acceptable.
Q: Is the E38S rope encoder compatible with a PLC?
A: Yes. The E38S outputs an NPN open-collector signal, which is widely compatible with most industrial PLCs, counters, motion controllers, and CNC systems. Simply connect it to a 5–24V DC supply and wire the NPN signal lines to your controller's input terminals.
Q: What rope length should I choose – 1M, 1.5M, or 2M?
A: Choose the rope length that matches or slightly exceeds the maximum linear travel distance of your application. For example, if your cylinder or axis moves up to 900mm, a 1M rope encoder will be sufficient. For longer strokes up to 1.8M, select the 2M variant for comfortable operating range.
Q: What material is the encoder housing made from?
A: The E38S encoder housing is made from alloy, providing excellent rigidity, durability, and resistance to vibration and mechanical stress in industrial environments.