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1 General Description
The UMD 705 is specially designed for monitoring of energy and power quality in advanced
power systems and smart grids. It is intended to be used mostly for DIN rail mounting. This
display-less design with multiple communication options is suitable for a wide spectrum of
automation tasks in modern buildings, distributed power generation, remote supervision of
the infrastructure and also remote load management. Two different user interfaces are offered
- UMD 705 D with a small embedded color display on the front panel for simple local value
reading and an unobtrusive UMD 705 without display with limited ability for hostile user
interaction. To protect the actual setup and collected data each instrument can be locked by
a custom pin. It uses standard RS-485 serial line for communication with remote control
systems. Optionally it can be equipped with other communication peripherals such as
Ethernet, USB.
It is equipped with three voltage inputs and three current inputs.
1.1 Improvements and advanced functions
new front panel display and control.
new power supply option U with 85-510 VAC aux voltage and two universal DIO ports
improved MIN/AVG/MAX measurement and evaluation
precise four quadrant active and reactive energy measurement with optional 10 ms
evaluation period - to record fluctuations and fast changes of power flow direction
optional push-data function in modbus master - to feed the remote server automatically
Extended set of conditions and control actions in the IO programming section
optional Windows and Linux (ARM, x866) library for custom control software development
