Continuum Power Supply Reference 11
Output Power Connection
All Continuum power supply modules include a connector on the right upper side of
the case for distribution of the 24 VDC that it generates. Other Continuum modules
(CPU, I/O) use this output as their primary power.
The power output connector is a five pin male assembly that is designed to easily
insert directly into the left side (input) connector of any CPU or I/O module. The
signals within that connector are as follows:
PIN
Function
5
+24 VDC
4
24 VDC Return
3
No Connection
2
Low Battery *
1
AC Power *
* Only on PS 120/240 AC 50-U
The power supply generates a +24 VDC source for all other modules in the system.
This power source is located on pins 4 and 5.
The UPS version of the power supply (PS 120/240 AC 50-U) includes two power
status signals on pins 1 and 2. Their function is as follows:
AC Power is a logic signal that is intended to communicate to an attached CPU
module that AC power is available. When AC is interrupted and the power supply has
switched to UPS battery mode, this signal presents a logic low to the CPU. The CPU
can use this signal to start an orderly system shutdown. For more information on the
use of this signal refer to the Continuum CPU Reference #30-3001-703.
Low Battery is a logic signal that is intended to communicate to an attached CPU
module that the voltage of the battery has dropped below 22 Volts. When the power
supply is in UPS battery mode, this signal presents a logic high to the CPU. Should
the battery voltage drop, this signal switches to a logic low. The CPU uses this signal
to start an orderly system shutdown. For more information on the use of this signal
refer to the Continuum CPU Reference #30-3001-703.
5
Technical Manuals Online! - http://www.tech-man.com
