The Emerson Motion Control EP-125F-A is a 16-channel digital input module engineered for PACSystems RSTi-EP industrial automation architectures. This compact 11.5 mm slice supports positive logic inputs at 24 VDC (20.4–28.8 VDC operating range) and integrates across PROFINET RT, PROFIBUS, Modbus TCP, and EtherCAT networks. Hot-swappable design with module and channel status LEDs enables rapid diagnostics and field replacement.
## Technical Specifications
• **Input Points:** 16 channels, positive logic
• **Supply Voltage:** 24 VDC (20.4–28.8 VDC range)
• **System Current Consumption:** 8 mA
• **Input Current Consumption:** 52 mA
• **Input Thresholds:** >11 VDC on, <5.0 VDC off
• **Input Delay (I/O Scan Time):** 3 ms
• **System Bus:** RSTi-EP, 48 Mbps max transfer rate
• **Bus Performance:** Reads up to 256 DI/DOs in 20 ms
• **Physical Dimensions:** 120 × 76 × 11.5 mm
• **Weight:** 87 grams
• **Mounting:** DIN rail
• **Protection Rating:** IP20
• **Operating Temperature:** −20 to +60 °C
• **Storage Temperature:** −40 to +85 °C
• **Humidity:** 5–95% non-condensing
## Key Features
• 1-wire sensor connectivity with reverse polarity protection
• Hot-swap capability for uninterrupted system operation
• General module diagnostics with LED status indicators
• Hazardous location certification: Class 1 Division 2 (Groups A, B, C, D), ATEX Zone 2, ISA 12.12.01:2007, SIL 3
• Global compliance: UL 508, CSA C22.2, CE, CCC, DNV GL
## Typical Applications
High-density industrial control cabinets requiring distributed digital input acquisition in process automation, machinery control, and safety-critical systems operating in ordinary and Class 1 Division 2 hazardous locations.
## Compatibility & Integration
Designed exclusively for PACSystems RSTi-EP systems. Supports up to 1024 I/O points per drop across multiple industrial communication protocols, enabling flexible network architecture in mixed-protocol environments.
