The ABB RET670 Display Panel Module, also cataloged as the RET670 Local Human-Machine Interface (HMI), operates as a dedicated hardware component for localized configuration and diagnostic data display within Relion 670 transformer protection series platforms. The module executes physical status polling and logs real-time parameters from the base numerical protection relay. It integrates directly onto the front cutout of substation cabinets, establishing a local access link to manipulate parameters and reset circuit interlocks without external computing equipment.
Hardware Specifications
Parameter
Specification
Model
RET670 Display Panel Module
Brand
ABB
Origin
Sweden
Weight
3.5 kg
Dimensions
30 mm x 180 mm x 225 mm (W x H x D)
Operating Temp
-25 deg C to +60 deg C
Power Consumption
Less than 25 W (supplied via host IED)
Part Number
1MRK000008-NBr02
Protection Class
Front IP54, Rear IP20
Display Type
Graphical LCD with programmable softkeys
Serial Interfaces
Front RJ45 maintenance port
Language Matrix
Multilingual firmware capability
Backplane Bus Communication Velocity and Network Integration
The RET670 Display Panel Module interfaces with the central protection processor through an internal ribbon connection optimized for high-frequency synchronous backplane bus communication velocity. This dedicated local bus handles real-time fault waveform streaming and alarm aggregation directly from the relay core. When executing automated multi-node setups across Profinet or EtherNet/IP deterministic networks, this localized display configuration prevents HMI rendering cycles from impacting critical protection loop scaling or the latency thresholds of adjacent digital I/O submodules.
