Panasonic WJ-MPS850 - Manual (Page 3)

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q Operate Indicator (OPERATE)
Is on when the power of the WJ-MPS850 CPU
Switch Unit is turned on.
Note: The power switch of the CPU Switch Unit is
located underneath the front panel.
Remove the front panel by removing four screws
on the panel.
w CPU Mode Selector (A / AUTO / B)
LEDs in the buttons indicate the selected mode of
the CPU Switch Unit.
• A and B Buttons
On: Indicates the active mode is selected.
Off: Indicates the standby mode is selected.
• AUTO Button
On: Indicates the auto switching mode is select-
ed.
Off: Indicates the manual switching mode is
selected.
e Reset Buttons (A RESET, B RESET)
Press these buttons when the CPUs reject control
from the external unit.
r CPU Diagnostic Indicators (CPU DIAGNOSTIC)
Lights to indicate that the self-diagnosis is being
run.
t Controller Ports [SYSTEM CONTROLLER
(RS-485)]
These ports are provided for controlling the 850
System with the RS-485 system controllers. Up to
12 controllers can be connected with each CPU.
y Peripheral Interface Ports [PERIPHERAL INTER-
FACE (RS-232C)]
These ports are reserved for future use or factory
tests.
u Diagnostic Input Ports
Receives inputs of the CPU status for self-diagnosis.
i Fuse Holder
o AC Inlet Socket (AC IN)
Plug the power cord (supplied as a standard acces-
sory) into this socket and connect it to an AC outlet.
■ Mounting into a Rack
1. Remove the four rubber feet by removing four
screws from the bottom of the CPU Switch Unit.
2. Install the CPU Switch Unit into the rack securing it
with four screws (not included).
Cautions:
• Do not block the ventilation opening or slots on the
cover to prevent the appliance from overheating.
Always keep the temperature in the rack within 45°C
(113°F).
• Secure the rear of the appliance to the rack by
using the additional mounting brackets (procured
locally) if the rack is subject to vibration.
CPU Sw itch Unit W J-MPS 850
Rack mounting screws
CPU DIAG NOSTIC -A
A RESET
CPU DIAG NOSTIC-B
B RESET
B
A AUTO
CPU MOD E INDICATIO N