EV/DV300 Series Power Meter
V:2.0 Revised October 2018
The voltage of the power supply connected with switch K is 16~30Vdc. The DI voltage can be
higher for purpose of anti-noise if the loop is too long, but the Max current should be less
than 10mA.
The wire number of DI could be AWG22~16 or 0.5~1.5mm2.
Relay Output
There are 2 optional relay output used for electric switch control in EV300. Terminal name
and number are R11, R12 (27,28) and R21, R22 (29,30).
The 2 relays are form A or form B and 5A/250Vac or 5A/30Vdc. Please use intermediate relay
when use them to control the electric switch.
There are two relay output modes for selection, one is latching, and the other is momentary.
For the latching mode, the relay can be used to output two status on or off. For the
momentary 23 EV/DV Series mode, the output of the relay changes from off to on for a period
of time Ton and then goes off. Ton is fixed to 800ms.
The wire of relay output should be choosing between AWG22~16 or 0.5~1.5 mm2.
Digital Output
There are two optional digital outputs used for energy pulse output in EV/DV300 series meter,
DO1 is active energy output, and DO2 is reactive energy output. The terminal name and
number are DO1+, DO1-(27,28) and DO2+,DO2-(29,30).
Pulse constant is related to ordering specification, the relationship is as follow:
100V/5A:20000; 400V/5A:3200; 400V/1A:20000;100V/1A:80000.
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