KEPCO BHK-MG 200W (Full Rack) Series - Manual (Page 108)

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BHK-MG (OPR) 022014
b. Program VsetA to: where:
• Eo is the output voltage of the power assembly.
• EomaxA is the rated maximum output voltage for unit A (e.g. 500 for the BHK 500-
0.4MG).
c. Program overcurrent value of unit A (IocsetA) to 1.1 x IsetA (see step 3a).
d. Program overvoltage value of unit A (VovsetA) to 1.1 x Eo.
4. Program unit B as follows:
a. Program IsetB to the rated maximum current of unit B (IomaxB), e.g., 400 (mA) for BHK
500-0.4MG.
b. Program VsetB to Eo.
c. Program overcurrent value of unit B (IocsetB) to 1.1 x the rated maximum current for
unit B (IomaxB), e.g., 1.1 x 400 = 440 mA for BHK 500-0.4MG.
d. Program overvoltage value of unit B (VovsetB) to 1.1 x Eo.
5. To apply power to the load:
a. If load switch used, close the switch.
b. If load switch not used, press POWER ON/OFF key once on unit A, then once on unit
B.
6. To disable power to the load:
a. If load switch used, open the switch.
b. If load switch not used, press POWER ON/OFF key once: first on unit B, then on unit A.
c. Alternative: Turn both units off by setting POWER switch to off (down) position, first on
unit B, then on unit A.
3.7.3.2 MASTER-SLAVE PARALLEL OPERATION
This configuration is characterized by the fact that only the master power supply is programmed
(controlled), while the slave power supply stays in current mode, providing the same output cur-
rent as the master.
A master-slave parallel combination with a single slave is shown in Figure 3-24 configured to
operate in voltage mode, and in Figure 3-25 to operate in current mode. The master can be con-
trolled either remotely—via either the GPIB bus or by analog means—or locally via the keypad.
The slave can only be programmed by analog programming using four external resistors con-
nected to the uncommitted amplifier in a differential configuration which amplifies the voltage
across the master sensing resistor by a factor of ten.
E o
E o m a x A
2500
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