TDK-Lambda RFE1600 Series, Руководство по установке

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5.3
Programming and Monitoring Functions
For Monitoring and Programming functions use the following equation. This is the direct data format.
𝑌 = (𝑚𝑋 + 𝑏) ∗ 10
𝑅
,
𝑋 =
(𝑌∗10
−𝑅
−𝑏)
𝑚
Where Y - digital value sent or received from the supply.
X is the normal value (V, A, °C)
m, b, R - coefficients that are explained in
Table 5-1
.
Voltage (V) Physical value Physical Unit Min. Value Max. Value m b R
48
Voltage Programming V 38.4 58 426 -15335 -1
Voltage monitoring V 0 60 1705 0 -2
Current monitoring A 0 40 25575 0 -3
Temperature monitoring
℃
0 100 1023 0 -2
32
Voltage Programming V 28.8 38.4 639 -15333 -1
Voltage monitoring V 0 40 25575 0 -3
Current monitoring A 0 60 1705 0 -2
Temperature monitoring ℃ 0 100 1023 0 -2
24
Voltage Programming V 19.2 29 853 -15360 -1
Voltage monitoring V 0 30 341 0 -1
Current monitoring A 0 80 12787 0 -3
Temperature monitoring ℃ 0 100 1023 0 -2
12
Voltage Programming V 9.6 13.2 1705 -15345 -1
Voltage monitoring V 0 15 682 0 -1
Current monitoring A 0 160 6394 0 -3
Temperature monitoring
℃
0 100 1023 0 -2
12,24,32,48
Current Programming
% 50 110 146 -5830 -1
Table 5-1: Coefficients Table
m, b, R coefficients can also be recovered from the EEPROM.
Coefficients are stored in ASCII Format.
Command Name Command Code Type #Data Bytes
MFR_VOLTAGE_MON_COEFF D2h Read Block 16
MFR_CURRENT_MON _COEFF D3h Read Block 16
MFR_TEMP_MON_COEFF D4h Read Block 16
MFR_VOLTAGE PROG_COEFF D5h Read Block 17
MFR_CURRENT_ PROG_COEFF D7h Read Block 16
5.3.1 Monitoring Output Voltage (READ_VOUT)
The accuracy of the voltage reading is +/-2%
The output voltage is read before the ORING Circuit (~50mV Voltage drop @ load, no drop @no load).
The read back Output Voltage can be calculated using the “Direct data Format”.
Refer to Table 5-1 for the Coefficients for calculating the Output Voltage.
Command Code Type #Data Bytes
8Bh Read Word 2
Example: Power Supply RFE1600-48;
Hex read back = 032Ch;
Converted to Decimal = 812;
Using the required coefficients the Output Voltage 812x100/1705 = 47.62V.
Read the Actual Output Voltage on the Output Bus Bar (Ex: 47.90V). Add 0.05V to compensate O-Ring
Circuit drop.
So, the actual voltage is (Ex: 47.90 + 0.05 = 47.95V).
Accuracy is (47.95-47.62)/60(*1) x100 = 0.55%