AccuEnergy EV390 User Manual

EV/DV300 Series Power Meter
Chapter 2: Installation
V:2.0 Revised October 2018
21
The max AO load for the 3 modes are,
4~20mA:
Max load resistor 500Ω
0~1mA:
Max load resistor 10kΩ
0~5V:
Max current 20mA
24Vdc Power Supply
There is an 24Vdc power supply in IO extend of EV300 series. The terminal name and number
is AO2+, AO2- (33, 34), corresponding with (24V+, 24G). The voltage output range is 24V
(±10%), power rating is 2W and isolate voltage is 1000Vdc.
Note: Only one option can be chosen between 24Vdc power supply and Analog output.
Alarm Output
There is an alarm function in EV300 series meter. The alarm will be triggered when a metering
parameter is over the limit value and over the setting time limit. The alarm can be related to
relay output or LCD back-light flashing. The setting of alarm is as following:
1. Set the relay output mode as alarm. (RO=2).
2. Assign metering parameter to alarm. (Refer Table 2-2)
3. Set alarm value limit.
4. Set alarm time limit. (Min time:1s, Range: 0~255s)
5. Sign of the inequation. (0: parameter value limit)
6. Relate to relays. (0:RO1, 1: RO2, 2: RO1 and RO2)
For register of setting parameters please refer to 4.3 of this manual. Serial number versus
alarming parameter is listed in Table 2.2. Number 0 means no parameter is assigned to alarm.
Table 2.2 No. versus alarm parameter
No.
Parameter
No.
Parameter
No.
Parameter
No.
Parameter
No.
Parameter
No.
Parameter
1
U1
2
U2
3
U3
4
U12
5
U23
6
U31
7
I1
8
I2
9
I3
10
Uavg
11
ULavg
12
Lavg
13
P
14
Q
15
S
16
F
17
PF
18
In
Example:
Alarming parameter:
I1,
Time limit:
15s,
Alarm output relay:
RO1,
Rating of CT1 of I1:
200A,
Value limit:
180A.

AccuEnergy EV390 Specifications

General

Brand	AccuEnergy
Model	EV390
Category	Measuring Instruments
Language	English