FPSS1U TDK Corporation, FPSS1U Datasheet - Page 52

• 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

CHAPTER 20 PARALLEL AND SERIES OPERATION
20.1 Parallel operation
Up to 3 x FPS-T1U racks with up to 8 x FPS1000 installed units of the same output voltage rating can be connected
in parallel. The built-in Oring diodes on the main output and on the +12V auxiliary voltage in each FPS1000 unit
allow N+1 operation. By connecting the CS signal between the paralleled units, automatic current balance is achieved,
with +/-10% accuracy. For input voltages less than 100Vac, maximum output Power derated by 10% of the Power
rating. Refer to Fig 20-1 for output Power derating in parallel operation.
Fig 20-1
20.1.1 Parallel operation with Remote sensing
Fig 20-2 shows typical connection of parallel operation with Remote sensing. The CS signal wires should be as short
aspossible and with the same length.
% of rated Power
Fig 20-2 Parallel operation with Remote sensing
CS
CS
CS
100
90
OFF_1
FPS-1000 Module A
FPS-1000 Module B
FPS-1000 Module C
ON/
FPS-T1U
A
85
OFF_1
ON/
B
100
OFF_1
ON/
C
+V
+S
+V
+S
+V
+S
-S
-V
-S
-V
-S
-V
+S
+S
-S
-S
+S
-S
265
49
+S
-S
+V
Input voltage
(Vrms)
-V
LOAD
FPS-T1U Instruction Manual