TDK-Lambda Americas Inc.
2019
12
1.6
Turning PFH Module On/Off
1.)
Before applying AC voltage to the module make sure,
a.
The surface under the test fixture is a non-conductive surface
b.
Securely connect Input and Output cables to the test board
c.
Securely connect all monitoring devices to test board
WARNING When AC voltage is applied to the Evaluation Test Board the 450V bulk capacitors ARE
energized at ALL time
2.)
Apply AC input voltage to test fixture
a.
AC input voltage range 100Vac – 265Vac
b.
AC input voltage range < 100Vac, output load is de-rated 6.7W/V
c.
Once AC input voltage is applied, Auxiliary Voltage LED (DS301) will Turn-On
3.)
Turning On PFH module can be accomplished 1 of 2 ways,
i.
Remote On/Off
ii.
PMBus
a.
The method chosen to turn On PFH has to be the
SAME
method to turn Off PFH
i.
Example: If Remote On/Off turns On PFH, then PMBus cannot turn it Off, only
Remote On/Off can turn Off PFH.
b.
Method 1: Toggle Remote On/Off,
I.
Remote On/Off switch (SW200) On – Will turn PFH On
II.
Remote On/Off switch (SW200) Off – Will turn PFH Off.
c.
Method 2: PMBus,
I.
Write CMD 0x01, Byte 0x80 – Turns PFH On
II.
Write CMD 0x01, Byte 0x00 – Turn PFH Off
d.
Once PFH is turned On, Power Good LED (DS300) will turn On
e.
When PFH is turned Off, Power Good LED (DS300) will turn Off
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