The IFM CR3020 is a compact CAN-based real-time clock designed for mobile-machine control systems. It provides accurate time and date information to CAN-connected controllers. The device can set and request calendar information and also supports alarm functions. An integrated backup battery maintains the clock during supply interruptions. The CR3020 can be integrated with IFM controllers or other CAN-based control systems. CODESYS function blocks are available for simplified application development.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The CR3020 provides real-time calendar information for mobile-machine applications. It can maintain day, month, year, hour, minute, second and weekday information. The current time and date can be requested through the CAN network. The RTC can also be programmed to set specific time and date values. This makes it useful for time-dependent machine functions. Accurate time information can support event logging and scheduled machine operations.
The CR3020 includes an alarm output that can be programmed according to the application. The alarm can be used to trigger connected machine electronics at a predefined time. It can support functions such as starting a controller or activating another electrical consumer. The alarm period can be configured through the controller software. This provides a simple method for implementing time-controlled machine functions. The integrated output includes short-circuit and overload protection.
The device communicates through a CAN Layer 2 interface. It supports CAN communication rates of 125, 250 and 500 kbit/s, with 250 kbit/s as the default in the documented version. CODESYS libraries provide function blocks for initialization, setting time, requesting time and managing alarms. The device can also be controlled through CAN messages when used with non-IFM controllers. Its compact automotive-relay-style housing is suitable for mobile applications.
Real-time clock for CAN systems
Time and date setting
Time and date request
Programmable alarm output
Integrated backup battery
CAN Layer 2 communication
CODESYS library support
IEC 61131-3 compatibility
Short-circuit protection
Overload protection
Compact relay-style housing
Wide operating temperature
Mobile machine controllers
Time-based machine functions
Event logging
Scheduled machine operations
Controller start-up functions
Agricultural machinery
Construction equipment
Vehicle automation
CAN-based automation systems
| Specification | Details |
|---|---|
| Product Code | CR3020 |
| Product Type | CAN Real-Time Clock |
| System | R360 / CANrtc |
| Housing | Automotive relay housing |
| Supply Voltage | 8...32 V DC |
| Current Consumption | Approx. 6 mA at 24 V DC |
| CAN Interface | CAN Layer 2 |
| CAN Baud Rates | 125 / 250 / 500 kbit/s |
| Default Baud Rate | 250 kbit/s |
| Output | 1 binary output |
| Output Type | Positive switching / high-side |
| Output Voltage | UB - max. 1.5 V |
| Output Current | ≤2 A |
| Output Protection | Short-circuit and overload |
| RTC Data | Day / month / year / hour / minute / second / weekday |
| RTC Accuracy | ±2 s/day at 25 °C |
| Battery Life | Up to 15 years |
| Battery | Integrated / non-replaceable |
| Programming | CODESYS / CAN Layer 2 |
| Operating Temperature | -40...85 °C |
| Storage Temperature | -40...85 °C |
| Protection | IP20; higher protection possible with suitable relay base/cover |
| Connection | 6.3 mm flat-pin connector |
| Application | Mobile machine CAN systems |
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