Datcon DT1400 Series, Руководство по эксплуатации

Страница: 7 / 72

DT1400 xx xx
20170920-V0
7
Oparating principle
The input current or voltage to be measured is led to the 22
bit A/D converter through a protection and signal condition
circuit.
The digital output signal of the A/D converter is processed
by a microcontroller.
The microcontroller drives the 5 digit LED display,
processes the front panel membrane keypad, drives the
limit relays, the analogue output.
Easy on-site configuration through the front panel
membrane keypad is a major advantage of the
microcontroller-based technology. The configuration
parameters: input signal selection, signal filtering, display
scaling, decimal point position, display refresh rate, limit
modes, limit values, etc. are stored in EEPROM. The
settings are protected by a two-level password against
unauthorized manipulation.
Power supply The instrument has two power supply version:
DT1400 xx xx:
18-40 V DC / 14-29 V AC, 3 VA / 3.5 W
DT1400 xx xx PS:
140-250 V AC / 180-250 V DC, 3 VA / 3.5 W
3.4. Adjustment
The DT1400 xx xx can be adjusted through the
3 button front panel keypad. All configuration parameters
are stored in the instrument EEPROM for unlimited time,
even when the supply voltage beeng switched off.
The instrument doesn’t need any internal adjustment.