Why Choose the ABB TA5131-RTC Real-Time Clock Option Board?
The ABB TA5131-RTC is a compact real-time clock option board designed specifically for ABB AC500-eCo Basic programmable logic controllers. It adds real-time date and time functionality to compatible PM5012 CPUs, enabling PLC applications to use time and date information for scheduling, event recording, process control and other time-dependent automation functions.
Designed for the ABB AC500-eCo V3 platform, the TA5131-RTC provides battery-free real-time clock operation. After the PLC has been powered for at least 8 hours, the clock provides a buffering time of up to 7 days at room temperature, allowing date and time information to continue running through temporary interruptions to the controller power supply.
The TA5131-RTC installs directly into the option-board slot of compatible PM5012-T-ETH and PM5012-R-ETH Basic CPUs and receives its operating power through the internal CPU connection. Other AC500-eCo CPU families have an integrated real-time clock, making the TA5131-RTC specifically intended for PM5012-based systems requiring RTC functionality.
Key Advantages
- Adds real-time clock functionality to compatible ABB AC500-eCo Basic CPUs.
- Provides battery-free operation for straightforward installation and reduced maintenance.
- Offers up to 7 days of RTC buffering at room temperature after sufficient charging time.
- Provides clock accuracy of ±2 s/day.
- Installs directly into the CPU option-board slot without requiring a separate external RTC device.
- Powered through the internal CPU connection.
Key Features
- ABB AC500-eCo V3 real-time clock option board.
- Designed specifically for PM5012 Basic CPUs.
- Battery-free RTC operation.
- 7-day buffering time at room temperature after at least 8 hours of powered operation.
- ±2 s/day clock accuracy.
- Supports PLC date and time functionality.
- Real-time clock information is represented in DT date and time format.
- Internal power supplied through the connected CPU.
- Compact option-board format for direct CPU installation.
Real-Time Clock Functionality for AC500-eCo Basic PLCs
A real-time clock enables a PLC application to work with actual calendar dates and times rather than relying solely on timers based on controller operating time. With the ABB TA5131-RTC installed, a compatible PM5012 CPU can use date and time information for functions such as scheduled machine operations, time-dependent control sequences, event timestamps and maintenance routines.
The TA5131-RTC stores date and time using the PLC's DT format and continues operating for up to 7 days at room temperature after the system has been powered for at least 8 hours. Its battery-free design reduces maintenance requirements while providing practical clock retention during normal short-term power interruptions.
Typical Applications
- Time-based industrial machine control.
- Scheduled equipment start and stop functions.
- Process event and alarm timestamping.
- Maintenance and service scheduling.
- Building and facility automation.
- Lighting, pump and ventilation scheduling.
- Production and operating-time management.
- OEM control panels using ABB AC500-eCo PM5012 CPUs.
