Emerson EP‑1218 RSTi‑EP 8-Channel Digital Input Module

Product Description

The Emerson EP‑1218 is an 8-channel digital input module in the RSTi‑EP remote I/O family. It detects 24 VDC signals from field devices such as sensors, switches, and pushbuttons, converting them into reliable digital data for control systems. Moreover, the module offers fast response times (0.3 ms configurable), enabling precise process monitoring in real-time industrial automation applications. Its compact 11.5 mm slice design allows high-density installations, accommodating up to 64 modules or 1024 I/O points per drop, maximizing cabinet space efficiently. In addition, the EP‑1218 provides enhanced diagnostics and supports hazardous area operations, ensuring dependable system performance in demanding environments.

Technical Specifications

• Model: EP‑1218

• Type: RSTi‑EP Digital Input Module

• System Compatibility: Emerson PACSystems™ RSTi‑EP Remote I/O

• Input Channels: 8 positive-logic inputs

• Response Time: 0.3 ms configurable

• Supply Voltage Range: 20.4 – 28.8 VDC

• On/Off Voltage Thresholds: ON > 11 VDC; OFF < 5 VDC

• Current Consumption: Isys: 8 mA; Iin: 30 mA

• Operating Temperature: –25 °C to +60 °C 

• Mounting: DIN-rail, compact 11.5 mm slice

• Certifications: UL 508, CSA C22.2, Class 1 Div. 2 Hazardous Locations, ISA 12.12.01:2007

• Application Areas: Industrial Internet, process automation, machine control, power generation, oil & gas, chemical industry

FAQ

1. How many digital inputs does the EP‑1218 module provide?
It provides 8 positive-logic digital input channels for various field devices.

2. What input voltage can this module detect?
It detects 24 VDC signals from switches, sensors, and pushbuttons.

3. Can the EP‑1218 be used in hazardous areas?
Yes, it is certified for Class 1 Division 2 hazardous locations.

4. What is the module’s response time?
The input response time is 0.3 ms, configurable for faster detection.

5. How is the module installed in control cabinets?
Its compact 11.5 mm slice design allows convenient DIN-rail installation for high-density setups.