Figure 3–2 Power System Block Diagram (1 of 2)
Front End
Unit
48V_DRCT
48V_SWD
DC5
CAMP
Module
Zone A
and B
LDCs
Zone A and B
Disk Extender
Modules
Console
Extender
Module
48V_SWD
DC3 3.3 Vdc/12 Vdc Input
DC5 5 Vdc Input
Console Extender Module
−12 Vdc Input
2 Vdc Output Not Used on Model 810
21 Vdc to CPU and IO ATM Module Clock Logic
48V_PSC to PSC
I2C Bus Power to Module Fault LEDs
5 Vdc In−Zone Disk Control Panel
5 Vdc Terminal DC Power
12 Vdc LDC Control Card
LDC Control and Status to CAMP Module
DC POWER OUTPUT AND DISTRIBUTION
DC3
Interface
Module
Extender/Interface Modules
5 Vdc to Centerplane to CPU/IO ATM/Console
3.3 Vdc and 12 Vdc to Centerplane to CPU/IO
ATM/Console Extender/Interface Modules
Thermal Emulator Output to
−12 Vdc to Centerplane/CPU/IO
Power System Control (PSC)
ATM/Interface Modules
AC POWER OUTPUT AND DISTRIBUTION
UTILITY POWER INPUT
120 Vac, 60 Hz
240 Vac, 50 Hz
Optional
Uninterruptible
Power System
MR−0500−92RAGS−A
Power
Distribution
Boxes
With UPS: AC Power Distributed to
System and Expansion Cabinets
Without UPS: AC Power Distributed
to Expansion Cabinet
3–8 System Maintenance