Document type:
Title:
Revision date:
Revision:
Installation Guide (MUT)
Mod. SY1527, universal multichannel power supply system
03/12/02
3
NPO:
Filename:
Number of pages:
Page:
00103/97:1527x.MUTx/03 HWGUIDE_REV3.DOC
62
23
WARNING:
Both the primary power supply and the power supply units can be inserted or
extracted from the appropriate housing only if the system main switch located on the rear
panel is OFF (i.e. in the
Ø
position) and the system is unplugged from the mains. Please
refer to Fig. 3.6, p.35 for the exact location of the main switch.
WARNING
DO NOT INSERT OR EXTRACT ANY POWER SUPPLY
BEFORE THE SYSTEM IS TURNED OFF AND UNPLUGGED FROM THE MAINS!
3.4.1
Power Supply Backplane
The power supply backplane (refer to Fig. 3.1, p.19) houses:
connector for the primary power supply;
three connectors for the Power Supply Units;
connecting terminals to the mains.
The Power Supply Backplane is plugged into the Board Backplane which supplies the 16
boards and the fan tray unit (refer to Section 3.2.1). The power supply backplane is
directly connected to the mains through connecting terminals. The power supply is
transferred from the Power Supply Backplane to the Board Backplane.
3.4.2
Primary Power Supply (Mod. A 1531)
The Primary Power Supply (Model A1531), which is always present even in the basic
system configuration, furnishes the +/-12 V and +5 V at 320 W for the system logic
circuitry and is always housed in the slot on the right (Housing 0, refer to Fig. 3.1, p.19).
The front panel of the primary power supply is shown in Fig. 3.3. On its top right there is
the power-ON key to turn the system on (the main switch on the rear panel just enables
the system to be powered, but the system is not powered until the power-ON key is
turned on).
The turn-ON key has three different positions:
the central position corresponds to the system OFF;
the right position turns the system ON locally;
the left position enables the system to be turned ON remotely.
Underneath the turn-ON key an orange LED (
MAIN
) warns, when it lights up, that the
system is connected to the mains and the switch on the rear panel is on (i.e. in
position 1).
Four LEDs, placed at the bottom of the panel, light up when the following conditions are
met:
