FieldPoint™ Operating Instructions cFP-PDB-100 Compact FieldPoint Fused Power Distribution Block The cFP-PDB-100 is a fused power distribution block for FieldPoint and Compact FieldPoint. It provides an easy-to-use, reliable way to distribute power from a single 10–30 VDC power supply, such as the NI PS-5, to the FieldPoint bank and to sensors and other devices. The cFP-PDB-100 is ideal for applications that do not require module-to-module isolation. Connect the positive lead of a 10–30 VDC power supply to one of the V terminals and the negative lead to one of the C terminals. If the total current can exceed 15 A, connect both V and both C terminals. The following table lists the maximum current levels at each of five maximum operating temperatures. Table 1. Current and Temperature Limits Total Current through cFP-PDB-100 Maximum Current per Circuit × Number of Circuits Maximum Operating Temperature 5A 5 A × 1 circuit 45 °C 10 A 5 A × 2 circuits 40 °C 20 A 5 A × 4 circuits 35 °C 20 A 2 A × 10 circuits 40 °C 30 A 5 A × 6 circuits 35 °C The block is shipped with 2 A, 32 V blade fuses on each of the output terminals. You can replace them with fuses up to 5 A if necessary. Refer to Figure 1 for the locations of the V and C terminals and other parts of the cFP-PDB-100. 1 3 2 6 5 1 2 3 4 V Terminals for Power Supply Power LED C Terminals for Power Supply C Terminals for Bank and Devices 4 5 V Terminals for Bank and Devices 6 Slots for Fuses, 5 A Max Figure 1. cFP-PDB-100 Fused Power Distribution Block Advanced Use with NI PS-5 Power Supplies If you have two PS-5 power supplies, you can connect both power supplies to the cFP-PDB-100 to provide redundancy or to supply up to 10 A of power to the FieldPoint bank. Refer to the manual shipped with the NI PS-5 for more information. FieldPoint™, National Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents. © 2003 National Instruments Corp. All rights reserved. *323727A-01* 323727A-01 Nov03