Automation Software Intrinsically Safe: EB3C Discrete Input Barriers Key features: Explosion Protection Discrete Input Barriers: • IEC60079 compliant • Dry-contact switches can be connected to the EB3C • 8- and 16-circuit types are available in common wiring types, ideal for connection to PLCs (DC voltage only) • Universal AC power voltage (100 to 240V AC) or 24V DC power (UL rating: 100 ~ 120V AC) • No grounding required • IDEC’s original spring-up terminals minimizes wiring time • Installation: 35-mm-wide DIN rail mounting or direct panel mounting • Global usage USA: UL/FM Canada: CSA Europe: CE marking, ATEX China: CQST Russia: GOST-R Japan: TIIS Korea: KOSHA • Ship class: NK (Japan), KR (Korea) Power Supplies Dry-contact switches can be connected to the EB3C. Common Wiring for PLC Inputs 8- and 16-circuit types are available in common wiring types, ideal for connection to PLCs (DC voltage only). Spring-up Fingersafe Terminals Reduce Wiring Time Connector Type Barriers MIL connector on the non-hazardous side • Easy connection to PLCs • Wiring is cut by 90% (compared with IDEC’s 16-circuit EB3C) • Various 20-pin MIL connectors can be connected

Part Numbers Discrete Input Barriers Number of Channels Power Voltage Connection to Non-intrinsically Safe Circuit Input Wiring Method Part Number Separate/Common Wiring Compatible Common Wiring Only EB3C-T03A Separate/Common Wiring Compatible Transistor (Sink/Source) Automation Software Common Wiring Only Transistor Source Screw Terminal Power Supplies Separate/Common Wiring Compatible Common Wiring Only Separate/Common Wiring Compatible Transistor (Sink/Source) 8 Common Wiring Only Connector Wiring *Note: These models are NOT Listed by UL Accessories DIN Rail End Clip Part Number Steel (1m...

Barriers Specifications Explosion-Protection and Electrical Specifications General Specifications Explosion Protection See Certification Numbers table below Installation Location Safe indoor place (non-hazardous area) Rated Voltage Allowable Voltage Range Rated Frequency Inrush Current Wiring Method Rated Operating Voltage Rated Operating Current Maximum Output Voltage (Uo) Maximum Output Current (lo) Maximum Output Power (Po) Maximum External Inductance (Lo)* Maximum External Capacitance (Co)* Allowable Wiring Resistance (Rw) Discrete Input Barrier Intrinsically Safe Circuits Automation Software...

Circuit Diagrams Internal Circuit Block Diagrams AC Power, Relay Output Type DC Power, Transistor Output Type Connector Wiring, Sink Output Type U Yellow IJ Yellow Yellow Hazardous Area Non-hazardous Area Wiring Examples External Wiring Examples Transistor Sink Output Type (Ex.: EB3C-T08CKD)

2-M4 tapped or 2-ø4.5 mounting holes 4-M4 tapped or 4-ø4.5 mounting holes 2-M4 tapped or 2-ø4.5 mounting holes Applicable Crimping Terminal Power Supplies Stripping the Wire End Solid Wire Mounting Hole Layout Stranded Wire (Ferrule) 6 2-M4 tapped or 2-ø4.5 mounting holes Automation Software Mounting Hole Layout (Screw Mounting)

Barriers General Information What is Explosion Protection? Explosion Mechanism For an explosion to occur, both hazardous atmosphere (mixture of explosive gas/vapor and air) and ignition source from electrical equipment must exist. The first step for explosion prevention is to prevent the three factors (explosive gas/vapor, air, and ignition source) from existing at the same time. Explosive Gas/Vapor General Information Ignition Source Automation Software Ignition source: Electrical equipment which originates electrical sparks or has a high temperature, capable of causing ignition in a hazardous...

General Information Explosion Protection Types Hazardous Area Non-hazardous Area Intrinsically Safe Structure • Structure in which voltage and current are limited so that no sparks, arc, and thermal effect produced by electric equipment (switch, pilot light, etc) in hazardous areas are capable of causing ignition of explosive gas/vapor. Switch, pilot light, sensor, thermocouple buzzer, etc. Power Supply Type of connectable equipment depends on the barrier type. Automation Software Wiring distance is limited by wiring capacitance and inductance. Features: • Barrier is installed in non-hazardous...

General Information resistance resistance When the zener is broken, the When the zener is broken, the voltage cannot be limited: high voltage cannot be limited: high voltage is applied to the connecting voltage is applied to the connecting device side, which could lead to device side, which could lead to explosion. explosion. Zener Zener (for Voltage (for Voltage Limitation) Limitation) IS Structure resistance resistance Automation Software Power Supplies The fuse is for current limitation The fuse is for current limitation fuse fuse These 3 zeners make redundant These 3 zeners make redundant...

General Information • Plastic housing • Small system design No grounding required: less labor, less cost No explosion protection grounding. PLCs Isolation transformer is used. All isolations – not only between primary and secondary, but also cores and bobbins – are reinforced. Power supply part: Electric shock is prevented with reinforced isolation. Conforms to IEC standard. Output part: Automation Software No electrical equipment grounding. The small power & EMC design requires no grounding. Conforms to IEC switch output standard. Shield wire treatment Shield wires of intrinsically safe circuits...

General Information Less labor 1. CE Conforms to EMC directive and LVD. EMC directive: Electromagnetism generated by the barrier does not affect other communication equipment. Also, electromagnetism generated by other communication equipment does not affect the barrier. LVD (Low Voltage Directive): For rated voltages 50 to 1000V AC, 75 to 1500V DC. 1. Finger-safe spring-up terminal The finger-safe, captive spring-up terminals prevent electric shock (IP20), and make installation easy. No screw loss. 2. ATEX Adopted by EU, this directive covers electrical and mechanical equipment and protective...