HIMA X-DI3202 Digital Input Module
The HIMA X-DI3202 is a high-density, safety-certified Digital Input (DI) module belonging to the HIMax series of Programmable Electronic Systems (PES) manufactured by HIMA Paul Hildebrandt GmbH. It is specifically designed for use in Safety Instrumented Systems (SIS) in process and factory automation where high availability and functional safety are paramount.
Key Technical Specifications
Module Type
Digital Input (DI)
Reads binary (On/Off) signals from field devices.
System
HIMax PES
Part of HIMA's high-availability, safety-certified PLC platform.
Safety Integrity Level (SIL)
SIL 3
Certified according to IEC 61508, suitable for the highest level of functional safety applications.
Number of Channels
32
Provides 32 individually usable digital input channels.
Input Voltage
8.2 VDC
This low voltage is typically used for connecting NAMUR proximity switches (intrinsically safe sensors) and floating contacts.
Line Monitoring
Yes (Built-in)
Features line fault monitoring to detect open circuits (wire break) and short circuits in the field wiring.
Channel Type
Non-isolated (per channel)
Channels share a common reference point, often requiring external isolation barriers (e.g., Pepperl+Fuchs HiC series) when connecting to hazardous (Ex) areas.
System Connection
HIMA System Connector (96-pin)
Connects to the HIMax backplane and Termination Boards (FTAs).
Function and Application
The X-DI3202 is primarily used to acquire signals from safety-related field sensors in critical applications, such as:
Emergency Shut Down (ESD) Systems: Monitoring emergency stop pushbuttons, safety switches, and process interlocks.
Fire & Gas (F&G) Systems: Monitoring fire detection and gas detection sensors (when compatible with the 8.2 VDC NAMUR interface).
Burner Management Systems (BMS): Monitoring critical flame detectors and pressure switches.
Advantages of the X-DI3202
High Density: With 32 channels on a single module, it reduces panel space and overall system footprint.
Intrinsic Safety Support: The 8.2 VDC source is specifically tailored for connecting to intrinsically safe NAMUR sensors, which are necessary for explosion-hazardous (Ex) environments.
Comprehensive Diagnostics: The built-in line monitoring capability ensures high diagnostic coverage, automatically detecting and reporting field wiring faults (shorts or breaks) before they lead to unsafe conditions, thereby maintaining SIL 3 integrity.
Associated Termination Boards
The X-DI3202 module is typically inserted into a Termination Board (also known as a Field Termination Assembly or FTA). Common termination boards compatible with this module, especially for connecting external isolated barriers for Ex zones, include:
HiCTB32-HIM-RAC-SP-DI3202: A termination board often manufactured by partners like Pepperl+Fuchs, designed to perfectly match the pin assignment and functionality of the X-DI3202 module.
