PSM-D21 Equipment information & support
The Emerson PSM-D21 is a mission-critical utility-grade DC power supervisory and battery string inspection controller engineered for 220V, 110V, and -48V DC power systems in electrical substations and power plants. It integrates full rectifier control, bus insulation monitoring coordination, digital I/O alarm acquisition, and automated battery management within a hot-swappable module featuring an LCD graphical interface.
Equipment information
- Brand
- Emerson
- Equipment model
- PSM-D21
- Equipment type
- Power distribution units (PDU)
- Controller / software version
- Confirm against the installed equipment
Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.
- System Nominal Voltage
- 220V / 110V / -48V DC
- Communication Interfaces
- RS485, RS232
- Supported Protocols
- Modbus-RTU, CDT, DLT645
- Operating Temperature Range
- -20°C to +60°C
- Hot-Swappable Support
- Yes (Live Hot-Pluggable / Plug-and-Play without Power Interruption)
Alarms & troubleshooting
No public alarm guide is available for this model yet
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