Safety Controller ▶ Würth Elektronik

Functional safety in commercial vehicles – Ensuring reliable and safe operations

In the world of commercial vehicles and mobile machines, functional safety is a crucial factor in the design and development of the electrical vehicle architecture. Functional safety is ensuring that electronic and mechanical systems operate reliably and safely, even in the event of technical failures. It minimizes risks by detecting potential failures before they lead to dangerous situations. Increasing complexity in cabling, the integration of new components and technologies, as well as growing levels of automation and electrification, are key factors driving the need of electronic controllers that are fulfilling safety standards.

In order to meet this demand, we offer our customers Safety Controllers according to standards such as:

IEC 61508 SIL 2
ISO 13849 (PL d) / IEC 62061 (SIL 2)

Our Safety Controller SC M-48

WE support your functional safety requirements

The SC M-48 is a versatile safety controller designed for demanding safety-relevant applications like construction and agricultural machines. The freely programmable safety controller with a powerful dual-core ARM Cortex-A7 processor is protected by a compact rugged housing designed to withstand harsh environmental conditions. With up to 26 inputs and 22 outputs, along multiple communication interfaces such as Ethernet, LIN and CAN, it offers flexible integration, real-time data processing and reliable control of vehicle functions.

The WEsafety Control Designer is a powerful programming environment for the SC M-48. Programming can be carried out both object-oriented according to IEC 61131 and in C.

Applications

Machine status monitoring and control for safety-relevant applications such as:
- Agricultural machinery, where ensuring safe operation during tasks like harvesting and plowing is crucial to prevent accidents and protect operators.
- Construction equipment, where monitoring and controlling heavy machinery like excavators and cranes helps prevent accidents and ensure worker safety.
CAN communication with multiple communication stacks, including J1939, RAW CAN, and CAN safety protocols.

Open data sheet

Data and Facts about the SC M-48

Operating temperature	-40 °C to +85 °C
Operating range	12 – 32 VDC
Processor	ARM Cortex-M4 & ARM Cortex-A7
Power consumption	Max. 80 A
Clock frequency	M4: 168 MHz / A7: 500 MHz
Flash memory	2 MB / extern 32 MB flash
RAM	2 MB
FRAM	2 MB external
Ingress protection	IP67 / IP69K
Dimensions	240 x 180 x 50 mm

Amount	Type	Description
8	Analogue inputs	5 V / 10 V / 20 mA 4 x 2 safe
16	Digital inputs	0 – 40 V
2	Digital wake up inputs	2 x wake up inputs: 1 x High active (ignition) 1 x Low active (door contact)
8	Outputs LS 500 mA	500 mA – PWM / digital
10	Outputs HS 4 A	4 A – PWM / digital
2	Outputs 6 A	HS max. load 6 A (optional)
2	Outputs 9 A	HS max. load 9 A (optional)

At a glance: Your advantages with the SC M-48

Unrestricted full power output	Extensive connectivity	Advanced CAN functionality	Rugged design

Simultaneous full current output across all outputs No limitations on power consumption	Up to 26 inputs and 22 outputs Multiple communication interfaces (Ethernet, LIN and CAN)	Extended CAN interface offering advanced filtering, gateway functionality and wake-up features	Durable housing designed to withstand harsh environmental conditions Protection class IP67 and IP6K9