FPSS1U TDK Corporation, FPSS1U Datasheet - Page 39

• Manufacturer Part Number: FPSS1U
• Description: RACK 3 SLOT FOR FPS1000
• Manufacturer: TDK Corporation
• Series: FPSr

Specifications of FPSS1U

• Accessory Type: Rack System
• No. Of Slots: 3
• Peak Reflow Compatible (260 C): No
• External Width: 19.00"
• Rack U Height: 1
• External Depth: 13.82"
• For Use With: 285-1239 - PWR SUP FNT END 48V 1008W 21A285-1238 - PWR SUP FNT END 32V 992W 31A285-1237 - PWR SUP FNT END 24V 960W 40A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: FPS1000 Series
• Lead Free Status / Rohs Status: RoHS Compliant part
• Other names: 285-1240

13.1.4 Remote On/Off control at parallel operation
The paralleled racks can be turned On or Off via a single On/Off control. Refer to Fig 13-5 for typical application.
The Signal Return function of all the paralleled racks should be connected together to create a common Signal
Return bus. The Signal Return bus may be connected to the -V or the +V potential or floated. In any case do not
connect the Signal Return bus to different potentials.
13.2 Series operation
Two FPS-S1U racks with the same output voltage rating can be connected in series to increase the output voltage
or to create a bipolar voltage source. It is recommended to connect diodes in parallel with each output to prevent
reverse voltage in case of failure in one of the power supplies.
Each diode should be rated to at least the power supply rated output voltage and output current.
Refer to Fig 13-6 and 13-7 for a typical series connection of power supplies.
Fig 13-6: Series connection for increased output voltage
Fig 13-7: Series connection for Bipolar output voltage
FPS-S1U #1
FPS-S1U #2
11
11
FPS-S1U #1
FPS-S1U #2
SIG.
RTN
SIG.
RTN
11
11
SIG.
RTN
SIG.
RTN
FPS-S1U #1
FPS-S1U #2
FPS-S1U #3
OFF
5 15 25
OFF
5 15 25
ON/
ON/
OFF
5 15 25
OFF
5 15 25
A
A
ON/
ON/
A
A
OFF
OFF
ON/
ON/
OFF
OFF
B
B
ON/
ON/
B
B
SIG.
RETURN
SIG.
RETURN
SIG.
RETURN
OFF
OFF
ON/
ON/
ON/OFF
ON/OFF
ON/OFF
C
C
OFF
OFF
ON/
ON/
A, B, C
A, B, C
A, B, C
C
C
+S
+V
+S
+V
+S
+V
+S
+V
-V
-S
-V
-S
-V
-S
-V
-S
(*) Diodes are user supplied
(*) Diodes are user supplied
11
11
5, 15, 25
11
5, 15, 25
5, 15, 25
2.6 mA / Installed unit
2.6 mA / Installed unit
Fig 13-5: Remote On/Off control at parallel operation
(*)
(*)
(*)
(*)
2.6 mA / Installed unit
Series operation is not applicable for units with I
ON
OFF
+S
-S
+V
+V
-V
-V
COMMON
CAUTION
LOAD
36
LOAD
2
C bus option.