Hitachi HX-RIO3 Series User Manual page 23

23
Example of Setting
- Read data: Phase 1 Rms Voltage/Rms Current/Apparent power/Active power.
- Input Value: 220V, 1000A, PF 0.5
- Parameter: CT 1: 1000, Input Frequency 55 ~ 65Hz, Overvoltage threshold 260V, Other is Default(0).
- Overvoltage Threshold = (260V(User Setting Value)-250V(default Setting Value))/0.2V. Resolution: 0.2V
- ex) OverCurrent Threshold = 1000A (User Setting CT 1 : 1000)=((1A(User Setting Value)-0.8(default Setting
Value))/0.001)*1000(CT). Resolution: 0.001A
* All of default value is 0
- Step #1
- Set the Parameter
Parameter
CT sensor 1 : x (12 bit)
Scaling for energy values (3 bit)
Frequency (1 bit)
Overvoltage Threshold Lx (8 bit)
Undervoltage threshold Lx (8 bit)
Overcurrent Threshold Lx (8 bit)
All of Parameter
- Setp #2
- Set the Control Byte (See Output Image Value)
Bit# 7
Control Byte #0 RES
0
Control Byte #1 RES
0
Control Byte #2 RES
0
Control Byte #3 RES
0
Bit# 6 Bit# 5 Bit# 4
Measure Select (Voltage)
0 0 0
Measure Select (Current)
0 0 1
Measure Select (Power)
0 0 2
Measure Select (Power)
0 0 2
Value
001111101000 (bit) Set CT 1000
000 (bit) Set 1 m Wh/VARh/VAh
1 (bit) Set 55~65Hz
00110010 (bit) Set 260V
00000000 (bit) Set 0V(default)
00000000 (bit) Set 0.8A(default)
E8 83 32 00 00 (Byte hex)
Bit# 3 Bit# 2
CON_ID (Rms Voltage L1-N)
0 0
CON_ID (Rms Current L1-N)
0 0
CON_ID (Apparent Power L1)
0 0
CON_ID (Active Power L1)
0 0
HX-RIO3 Series
Bit# 1 Bit# 0
0 0
0 0
0 0
1 1