Power Supply Selection - Honeywell HC900 Installation And User Manual

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.
Module type
Controller
Scanner
Analog Input (8 pts)
Analog Output (4 pts)
AC Digital Input (16 pts)
DC Digital Input (16 pts)
Contact Input (16 pts)
AC Digital Output (8 pts)
DC Digital Output (16 pts) (
Relay Output (8 pts)
Total mA
Is total 5V less than 2000?
1.
Is total 24V less than 900?
2.
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.
3.
Multiply 5V total by 5.1.
4.
Multiply 24V total by 24.5.
5.
Sum results of 4 and 5.
6.
Divide results of 6 by 1000
7.
Is the result of 7 less than 28?
8.
If the answer to 8 is Yes, use power supply 900P02-0001
9.
If the answer to 8 is No, use power supply 900P01-0001
10.
Revision 5
9/03
A B
Max Current
Quantity @ 5 V in mA
( ) 600
( ) 600
( ) 40
( ) 40
( ) 230
( ) 230
( ) 230
( ) 220
) 430
( ) 140
HC900 Hybrid Controller Installation and User Guide
Pre-Installation Planning - Power Supply Selection
C D
Max Current 5V
@ 24 V in mA mA Sub. Tot
( D = A * B )
0 (
0 (
25 (
200 (
0 (
0 (
40 (
0 (
0 (
100 (
Total 5V= (
Yes/No
Yes/No
( )
( )
( )
( )
Yes/No
E
24V
mA Sub. Tot
( E = A * C )
) ( )
) ( )
) ( )
) ( )
) ( )
) ( )
) ( )
) ( )
) ( )
) ( )
) Total 24V= ( )
37