Monitoring Output Current (Read_Iout); Monitoring Supply Temperature (Read_Temperature_1); Programming Output Voltage (Vout_Command) - Tdk-Lambda Rfe2500 Serie Bedienungsanleitung

5.3.2

Monitoring Output Current (READ_IOUT)

The accuracy of the current reading is +/-10%
The read back output current can be calculated using the "Direct data Format".
Refer to Table 5-1 for the Coefficients for calculating the Output Current.
Command Used
8Ch
Example: Hex read back = 0361h;
Converted to Decimal = 865;
Using the required coefficients the output current = 865x100/1705 = 50.73A;
Read the actual Output current (Ex: 50.05A) / Accuracy is (50.05-50.73)/60(*1)x100 = -1.13%.
Supply (*1)
RFE2500-12
RFE2500-24
RFE2500-48
5.3.3

Monitoring Supply Temperature (READ_TEMPERATURE_1)

The accuracy of the Temperature reading is +/-3℃
The read back supply temperature can be calculated using the "Direct data Format".
Please refer to Table 5-1 for the Coefficients for calculating the Supply Temperature.
Command Used
8Dh
Example: Hex read back = 01DCh;
Converted to Decimal = 476;
Using the required coefficients the Supply Internal Temperature = 476*100/1023 = 46.53℃.
5.3.4

Programming Output Voltage (VOUT_COMMAND)

The accuracy of the Output Voltage Programming is +/-2%
The output Voltage can be programmed using the "Direct data Format".
Please refer to Table 5-1 for the Coefficients to be used for calculating the Voltage Programming.
Command Used
21h
Example: Power Supply RFE2500-24;
To program the Output Voltage to 24V, send (853x24+(-15360))/10 = 511 (DEC);
Read the actual set output Voltage (Ex: 24.05V) / Accuracy is (24.05-24)/30(*1)x100 = 0.16%.
Supply (*1)
RFE2500-12
RFE2500-24
RFE2500-48
Type
Read Word
Type
Read Word
Type
R/W Word
23
#Data Bytes
2
Full Scale (*1)
240A
120A
60A
#Data Bytes
2
#Data Bytes
2
Full Scale (*1)
15V
30V
60V