Pre-Installation Planning - Power Supply Selection
Revision 5 HC900 Hybrid Controller Installation and User Guide 37
9/03
Power Supply Selection
To determine which power supply to use, calculate power requirements below.
ATTENTION
Using inadequate power supply will cause the controller to cycle power on and off.
Enter quantity of each module type in column A and calculate the 5V and 24V maximum current in
columns D and E. Sum the maximum current for all module types and determine if the 900P02 power
supply is appropriate.
A B C D E
Max Current Max Current 5V 24V
Module type Quantity
@ 5 V in mA @ 24 V in mA mA Sub. Tot mA Sub. Tot
( D = A * B ) ( E = A * C )
Controller
( )
600 0
( ) ( )
Scanner
( )
600 0
( ) ( )
Analog Input (8 pts)
( )
40 25
( ) ( )
Analog Output (4 pts)
( )
40 200
( ) ( )
AC Digital Input (16 pts)
( )
230 0
( ) ( )
DC Digital Input (16 pts)
( )
230 0
( ) ( )
Contact Input (16 pts)
( )
230 40
( ) ( )
AC Digital Output (8 pts)
( )
220 0
( ) ( )
DC Digital Output (16 pts)
( )
430 0
( ) ( )
Relay Output (8 pts)
( )
140 100
( ) ( )
Total mA
Total 5V= ( ) Total 24V= ( )
1. Is total 5V less than 2000? Yes/No
2. Is total 24V less than 900? Yes/No
3. If the answer to 1 and 2 are YES, go to 4. If the answer to 1 or 2 is NO, use power supply 900P01-0001.
4. Multiply 5V total by 5.1. ( )
5. Multiply 24V total by 24.5. ( )
6. Sum results of 4 and 5. ( )
7. Divide results of 6 by 1000 ( )
8. Is the result of 7 less than 28? Yes/No
9. If the answer to 8 is Yes, use power supply 900P02-0001
10. If the answer to 8 is No, use power supply 900P01-0001
