Datakom DKM-250 User Manual

DKM-250 User Manual
DKM-250
DC ENERGY
ANALYZER
DESCRIPTION
The DKM-250 is a precision instrument
designed for measuring, displaying and
remote monitoring earth leakage and various
DC parameters in a DC distribution box.
The unit features a 32-bit ARM core
microcontroller.
The unit is supplied from the measuring DC
voltage input. Operating range is between 19
and 150VDC.
The current input of the unit is isolated from
the rest of the circuit and has different circuit
options:
● External current shunt (standard)
● Internal current shunt
● Hall Effect sensor input
● 4-20mA analog input
The unit has 2 digital inputs and 2 relay
outputs, both of them programmable for
required functions.
Thanks to its isolated RS-485 Modbus RTU
comport, the device is free from ground
potential difference issues and data are
safely transferred to automation and
monitoring systems. Program parameters
may be uploaded to the unit through the RS-
485 port.
The unit may output any measured value as
analog signal through its 4-20mA port. This
output allows easy connection to PLC
systems.
FEATURES
● Displays earth leakage in %
● Various current input options
● 2 programmable relay outputs
● 2 programmable digital inputs
● Programmable 4-20mA analog output
● Demand, Min & Max records
● Fully isolated RS-485 serial port
● MODBUS-RTU communications
● Bidirectional current & power measurement
● Bidirectional kW-h energy counter
● Bidirectional A-h counter
● Hours run counter
● Front panel programming
● Wide operating temperature range
● Sealed front panel (IP65 with gasket)
● Two part connection system
1
V-2.0