3-66
BHK-1/2-MG 030916
b. If load switch not used, press POWER ON/OFF key once on slave unit, then once on
master unit.
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 on master unit, then once on
slave unit.
c. Alternative: Turn both units off by setting POWER switch to off (down) position, first on
master unit, then on slave unit.
3.9.3.2.2 CURRENT MODE OPERATION
When the parallel combination is configured to operate in current mode (see Figure 3-25), the
master is in current mode, receiving current programming commands, and the slave tracks the
output current of the master.
The output current of the assembly in current mode is given by the equation,
Io = 2 x Io
M
, where Io
M
is the output current of the master, in mA.
The load voltage is given by
Eo = 2 x Io
M
x R
LOAD
.
NOTES: 1. The uncommitted amplifier of the slave unit uses 0.0091 mA (maximum) of the out-
put current, reducing the accuracy of the generated current. This can be avoided by
using the uncommitted amplifier of the master unit, configured as a non-inverting
repeater, between the signal coming from the master sensing resistor signal (termi-
nal 2) and the input to R1 shown in Figure 3-25.
2. The current of the slave unit will be slightly larger than the current of the master unit
(approximately 1% for BHK 500-80MG) due to the voltage drop on the wire con-
necting the internal sensing resistor to the externally accessible terminal TB1-7
(see Figure 3-25).
RECOMMENDED PROCEDURE.
The following steps are recommended to ensure the combi-
nation of power supplies (power assembly) configured for parallel master-slave operation is
connected and set up properly for current mode operation. Identical models are recommended
for parallel operation.
1. With the units turned off, perform all external wiring (see Figure 3-25). If possible, use a
properly rated switch between the power supply and the load.
2. Apply power to the units:
a. If a load switch is used, close the switch. Set POWER switch of both units to up position
to turn power on.
b. If load switch is not used, Set POWER switch of both units to up position to turn power
on, then press OUTPUT ON/OFF key once on each unit to disable the output.
Содержание BHK-MG Series
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Страница 18: ...xii BHK MG030916 FIGURE 1 1 BHK MG 40W SERIES PROGRAMMABLE POWER SUPPLY...
Страница 24: ...1 6 BHK 1 2 MG OPR 030916 FIGURE 1 2 BHK 40W SERIES POWER SUPPLY MECHANICAL OUTLINE DRAWING SHEET 1 OF 2...
Страница 25: ...BHK 1 2 MG OPR 030916 1 7 FIGURE 1 2 BHK 40W SERIES POWER SUPPLY MECHANICAL OUTLINE DRAWING SHEET 2 OF 2...
Страница 26: ...1 8 BHK 1 2 MG OPR 030916 FIGURE 1 3 RA 24 RACK ADAPTER WITH TWO 1 2 RACK BHK MG 40W UNITS...
Страница 35: ...BHK 1 2 MG SERIES 030916 2 3 FIGURE 2 2 BHK MG SERIES REAR PANEL CONTROLS AND CONNECTIONS...
Страница 100: ...3 54 BHK 1 2 MG 030916 FIGURE 3 20 SERIES AUTOMATIC CONFIGURATION...
Страница 108: ...3 62 BHK 1 2 MG 030916 FIGURE 3 23 PARALLEL AUTOMATIC CONFIGURATION Eo is the output voltage of the power assembly...
Страница 113: ...BHK 1 2 MG 030916 3 67 FIGURE 3 25 PARALLEL MASTER SLAVE CURRENT MODE CONFIGURATION...
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