Power Control Panel; Power Control Panel; Switches; Elapsed Time Meters - Control Data 3100 Reference Manual

POWER CONTROL PANEL
Power for the 3100 Computer System is controlled by the Power Control Panel, mounted
on the right side of the main cabinet assembly. The switches, circuit breakers, indicators
and meters associated with the panel are shown in Figure 5-9. Refer to Part 5 of the 3100
Customer Engineering manual for detailed maintenance information concerning the
Power Control Panel.
SWITCHES
Table 5-3 lists the switches and their functions. Refer to Section 2 for a description of the
Storage Address Protection switches.
ELAPSED TIME METERS
Two elapsed time meters and a key-operated, two-position switch are located on the control
panel. Turning the key-operated Maintenance Mode switch to ON connects the Maintenance
Time meter to the computer to record the amount of time the computer is used during a
maintenance period. Removing the key connects the Operating Time meter to the computer
to record normal operating time. Customers renting the computer are often billed according
to the time recorded on this meter. The sum of the times recorded on both meters indicates
the total computer running time. Only one of the two meters can operate at anyone time.
Either meter is active for a minimum of one second when a storage cycle occurs.
TABLE 5-3. POWER CONTROL PANEL SWITCH FUNCTIONS
SWITCH NAME FUNCTION
CONTROL
When this switch is depressed, the Blower switch and Peripheral Group
POWER switches can be activated.
Depressing . .this switch turns on cabinet blowers. power supply blowers
BLOWERS and furnishes power for the peripheral equipment blowers. This switch
ON must be on before the power supplies can be activated. The Control
Power switch must be on before this switch can be activated.
POWER
When this switch is depressed and the Control Power and Blowers
SUPPLIES
switches are on. the motor generators are turned on. These sets furnish
ON
operating power for the logic power supplies.
PERIPHERAL
If the Control Power switch is on and this switch is depressed. ope rat-
GROUP I
ing power is sent to all the equipment connected to the Peripheral
ON Group I power distribution bus.
PERIPHERAL If the Control Power switch is on and this switch is depressed. operat-
GROUP II ing power is sent to all of the equipment connected to the Peripheral
ON
Group II power distribution bus.
NOTES
1.
The switches are active only when main power is present at the control panel
and the applicable circuit breakers are closed (ON position). The individual
circuit breakers are located directly below the switch panel.
2. Except for the Blowers switch, the OFF switches remove power immediately.
If the Power Supplies OFF and the Blowers OFF switches are
d~pressed
in
close succession, an automatic five minute delay will keep the blowers operating.
The Power Supplies OFF switch must be depressed a minimum of half a second.
5-15
Rev. 8