Installation Worksheets

Worksheet for Bulk Power Requirements

Use the following table to calculate the number of legacy bulk supplies required to power the system for each type based on the 12 VDC and 24 VDC power requirements calculated in Worksheet for System Power Requirements - 12 VDC Input.

Table: Bulk Power Requirements
Product Type Quantity Total Amps Needed for System Total Amps Available for system
12 VDC 24 VDC 12 VDC 24 VDC

Legacy DIN rail-mounted Bulk Power Supply 12 VDC

Provides 12 Amps each

(Grand Total Table N-3 or Table N-4 / 12 A = Quantity)

N/A

N/A

Legacy DIN rail-mounted Bulk Power Supply 24 VDC

Provides 12 Amps each (Grand Total Table N-3 or Table N-4 /12 A = Quantity)

N/A

N/A

Redundant Legacy DIN rail-mounted 12 VDC Bulk Power Supply (if applicable)

N/A

N/A

Redundant Legacy DIN rail-mounted 24 VDC Bulk Power Supply (if applicable)

N/A

N/A

Legacy Panel-mounted Bulk Power Supply 12 VDC

Provides 25 Amps each

(Grand Total Table N-3 or Table N-4 /25 A = Quantity)

N/A

N/A

Legacy Panel-mounted Bulk Power Supply 24 VDC

Provides 12.5 Amps each

(Grand Total Table N-3 or Table N-4 /12.5 A = Quantity)

N/A

N/A

Redundant Legacy Panel-mounted 12 VDC Bulk Power Supply (if applicable)(1)

N/A

N/A

Redundant Legacy Panel-mounted 24 VDC Bulk Power Supply (if applicable)(1)

N/A

N/A

(1) An OR-ing diode is required for redundant bulk power supplies. Refer to Appendix I for information.