76
PWR-01
Bleeder Circuit function
Turn the bleeder circuit off when you do not want the internal bleeder circuit to sink output
current. When you connect a battery, you can prevent excessive electrical discharges by
turning the bleeder circuit off.
Set the bleeder circuit to off, normal bleeder, or hyper bleeder using a CONFIG setting
(CF01).
When the POWER switch is turned on the next time, the PWR-01 starts with the settings that
were in use the last time that the POWER switch was turned off.
When using master-slave parallel operation or series operation, use the same settings on all
connected units. You can also specify this parameter when the PWR-01 is being used as a
slave unit.
Depending on whether the bleeder circuit setting, the sink current when an external voltage
source is connected will vary.
Sink current (reference value) from an external voltage source according
to the bleeder circuit setting
WARNING
Risk of electric shock. Set the bleeder circuit to on (CF01:
NORM
/
HYP
) before you
touch the output terminals. If it is set to off (CF01:
DIS
), the voltage that was present
when the output was on will remain at the output terminals even if you turn off the out-
put or POWER switch.
Bleeder circuit
Displayed
setting
Description
Off
1
1
Even if the output terminals are open and the output is turned off or the voltage setting is at 0 V, up
to several hundred millivolts of voltage may appear across the output terminals.
DIS
Bleeder circuit off
Normal bleeder
NORM
Bleeder circuit on
Hyper bleeder
HYP
Bleeder circuit on.
HB lights on the display. The fan speed is fixed to the maximum
speed.
Provides strong sink performance (see the table below).
The fall time at no load is reduced to about 70 % of that using the
normal bleeder (reduction in test cycle time (takt time) is possible).
Vout= Output terminal voltage
Model
Bleeder circuit
Sink current
5 Vout
10 Vout
15 Vout
20 Vout
30 Vout
40 Vout
PWR401L
Off
0.000 A
0.000 A
0.001 A
0.001 A
0.002 A
0.003 A
Normal bleeder
0.381 A
0.347 A
0.312 A
0.277 A
0.208 A
0.139 A
Hyper bleeder
0.583 A
0.546 A
0.512 A
0.477 A
0.409 A
0.339 A
PWR801L
Off
0.000 A
0.000 A
0.000 A
0.001 A
0.001 A
0.001 A
Normal bleeder
0.730 A
0.660 A
0.590 A
0.525 A
0.386 A
0.248 A
Hyper bleeder
1.130 A
1.060 A
1.000 A
0.930 A
0.780 A
0.640 A
PWR1201L
Off
0.000 A
0.001 A
0.001 A
0.001 A
0.001 A
0.002 A
Normal bleeder
1.120 A
1.010 A
0.900 A
0.792 A
0.577 A
0.362 A
Hyper bleeder
1.720 A
1.620 A
1.510 A
1.410 A
1.200 A
1.000 A
Summary of Contents for PWR1201H
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Page 113: ...Maintenance This chapter explains how to perform cali bration ...
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Page 135: ...Appendix A Factory Default Settings B Options C Troubleshooting ...
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