SMX 12-2/2
Free programmable and configurable compact safety controller
- Integrated drive monitoring for up to 2 axes with extended encoder functionality
- 8 Encoder interfaces
- 14 Safe digital inputs
- Up to 5 safe switch-off channels
- Compact safety controller suitable up to PL e (EN ISO 13849-1) or SIL3 (IEC 61508)
- Optional: safe/non-safe fieldbus interface
Variants
Characteristic of the module
Characteristic of the module
- Expandable up to:
- max. 42 safe digital inputs,
- max. 12 safe digital outputs,
- max. 20 safe digital I/Os,
- max. 9 safe relay outputs,
- max. 10 auxiliary outputs,
- max. 2 safe axes
- Freely programmable for the safe processing of emergency stop buttons, two-hand operation, light curtains, operating mode selector switches, etc.
- Complete speed and position-related safety functions for drive monitoring of one or two axes
- Speed monitoring
- Standstill monitoring
- Direction of rotation monitoring
- Safe increment
- Emergency stop monitoring
- Position monitoring
- Position/travel range monitoring
- Target position monitoring
- Freely programmable small controller for up to 800 AWL instructions
- Function plan-oriented programming using SafePLC2
- Pulse outputs for cross-circuit detection of digital input signals
- External contact monitoring of connected switching devices (EMU)
- Switchable safe outputs pn-, pp-switching for safety-relevant functions
- Monitored relay outputs for safety-relevant functions
- Extensive diagnostic functions integrated
- Parameter management for expansion modules in the base module
- Coded status display via 7-segment display on the front and status LEDs
- Multifunction button (Quit, Start, Reset) can be operated from the front
- Configurable with SafePLC2 via USB serial adapter or Ethernet-based fieldbus
- Extended functionality:
- Allows the connection of up to 2 encoders per axis (SSI, TTL, HTL proximity sensor)
- Extended encoder interface additionally supports a high-resolution HTL (200 kHz), sin/cos high-resolution and resolver
- Optional: integrated communication interface :
- Standard and safe fieldbus protocols for communication with a higher-level controller (PROFIBUS, PROFINET, CANopen, EtherCAT, Modbus TCP, PROFIsafe, FSoE)
- Safe cross-communication (SMMC) for data exchange between several base devices
- Fieldbus protocols with the same hardware can be switched using SafePLC2
- Safe remote IO communication for data exchange with distributed IO systems
- The mechanical structure of the SMX12-2/2 (/x*) depends on the respective version of the base module
* Optional: integrated communication interface (/DNM, /DBM)
Order information
Base modules
| Item | Description | Item No. |
| SMX12-2/2 | Base module, drive monitoring for up to 2 axes with extended encoder functionality | 2027 |
| SMX12-2/2/D | Base module + Decentralized communication | 1779 |
| SMX12-2/2/DNM | Base module + Decentralized communication + Ethernet-based fieldbus interface + Memory card | 1574 |
| SMX12-2/2/xNM | Base module + Ethernet-based fieldbus interface + Memory card | 1765 |
| SMX12-2/2/xxM | Base module + Memory card | 2031 |
| SMX12-2/2/DBM | Base module + Decentralized communication + CAN fieldbus interface + Memory card | 1766 |
| SMX12-2/2/xBM | Base module + CAN fieldbus interface + Memory card | 1767 |
Accessories
Item | Description | Item No. |
SMX91 | SMX Programming adapter | 1010 |
| SMX91/2 | SMX interface converter; Set with USB connection cable typ USB-B, shielded, for connection SMX 91/2 - PC, serial interface cable with 2x RJ10 connectors to connect SMX 91/2 to SMX assembly (new model) | 4304 |
SXxxxx-x | Terminal connector, screw terminals (set), encoded for cabling SMX12-2/2 | on request |
SX0232-3 | Terminal connector, spring terminals (set), encoded for cabling SMX12-2/2 | 1629 |
SX0000-9 | T-Bus connector volltage-carrying (grey) | 1015 |
SXxxxx-x | Y-cable for encoder splitting | on request |
FSoE license | Fieldbus license for FSoE | 2366 |
PROFIsafe license | Fieldbus license for PROFIsafe | 2319 |
Extensions
item | description | item no. |
SMX31/2 | I/O expansion module - SMX compact | 1705 |
SMX31R/2 | I/O expansion module with relay option - SMX compact | 2046 |
SMX31R-4/2 | I/O expansion module with relay option - SMX compact | 2047 |
Software
item | description | item no. |
SafePLC² 1st | Programming software, 1te License incl. Hardlock | 1244 |
SafePLC² 2nd | Programming software, 2te License incl. Hardlock | 1646 |
SafePLC² 3rd | Programming software, 3te License incl. Hardlock | 1647 |






