Keyence SJ-E204L Bar Ionizer | Small Flow Model

Product Introduction

The Keyence SJ-E204L belongs to the SJ-E series of energy-saving high-speed sensing ionizers. This small flow model combines a 2000 mm total length with 33 tungsten electrode probes. Specifically, it generates ions through a corona discharge method with a pulse AC voltage application of ±8000 V. The Hi-Power I.C.C. control method maintains ion balance within ±30 V under recommended conditions.

Technical Specifications

Ion Generation and Control

The SJ-E204L uses a shockless resistive coupling structure for safe operation. Its pulse AC method applies ±8000 V to generate ions efficiently. Meanwhile, the Hi-Power I.C.C. system continuously adjusts ion output to match environmental changes. This active control keeps the ion balance stable at ±30 V when measured at 300 mm or more with 0.2 MPa air pressure.

Electrical and Communication Features

Power requirements range from 24 to 36 VDC ±10%. Current consumption is 700 mA at 24 V or 500 mA at 36 V. Additionally, the unit provides NPN open collector outputs for ion level warning, condition warning, and alarm signals. A static elimination stop input accepts NPN open collector or contact signals. Remote control communication is available, though no built-in fieldbus ports exist.

Mechanical and Environmental Parameters

Physical Construction

The bar measures 2000 mm in total length. Its effective static elimination range reaches 2120 mm when the installation distance is 50 mm. The electrode probes use tungsten for durability, while the main body combines ABS, PBT, PP, LCP, PPS, SPS, and SUS materials. The complete unit weighs 2.10 kg.

Operating Conditions

Ambient temperature must stay between 0 and +40 °C. Relative humidity should remain within 35 to 85% RH without condensation. The air connection port uses Rc 1/8 threads. Air supply pressure ranges from 0.1 to 0.5 MPa, with 0.2 MPa recommended for optimal performance. No protective rating applies to this model.

Installation Guide

Mounting and Positioning

First, install the bar at a distance between 50 and 2000 mm from the target surface. For best results, maintain approximately 300 mm or greater to achieve the rated ±30 V ion balance. Next, connect the air supply using the Rc 1/8 port and set pressure to 0.2 MPa. Ensure the 24-36 VDC power source is properly grounded. Finally, wire the control input and output signals according to the NPN open collector specifications.

Operational Notes

The SJ-E204L performs best when air pressure remains stable. Avoid exceeding 0.5 MPa to prevent damage. Keep ambient humidity below 85% to prevent condensation on electrode probes. Besides, route control cables away from high-voltage lines to reduce electrical noise interference.

Packaging List

• Keyence SJ-E204L bar-type ionizer main unit (1 pc)

• User documentation (1 set)

FAQ

Q1: What is the effective static elimination length of the SJ-E204L?
A: The effective range reaches 2120 mm when the installation distance is 50 mm. This length suits wide production lines and web handling equipment.

Q2: Can this ionizer operate without compressed air?
A: No. The SJ-E204L requires air supply for ion transport. Use 0.2 MPa recommended pressure for rated performance.

Q3: What power supply does the SJ-E204L require?
A: The unit accepts 24 to 36 VDC ±10%. Current draw is 700 mA at 24 V or 500 mA at 36 V.

Q4: How many electrodes does this bar contain?
A: The Keyence SJ-E204L incorporates 33 tungsten electrode probes. This count provides uniform ion distribution across the 2000 mm bar length.

Q5: What shipping methods are available?
A: We ship via Fedex, UPS, and DHL. Transit times vary by destination.