Dpu Keyswitch - Metso PDP Series Installation, Preparation And Adjustment

DPU Keyswitch

The third position designates a separate or shared link connected to serial
port 1. Separate is to the right. Common (Shared) is to the left.
The fourth position designates a separate or shared link connected to serial
port 2. Separate is to the right. Common (Shared) is to the left.
Use the DPU keyswitch, located at the bottom part of the DPU chassis, to
select one of three operator modes. The DPU can operate with the key in
place or removed; you can remove the key from the switch regardless of key
position.
The keyswitch may be placed in one of the following three positions:
Run Keyslot horizontal
The DPU executes the functions defined in its point
database. In this mode, you are permitted to reload a DPU
database; however you cannot configure Interaction Page 9.
Offline Keyslot diagonal, one-quarter turn counterclockwise from
Run.
In this mode, the DPU scans inputs but does not execute
outputs. To service the DPU, you may manually select
offline by turning the keyswitch to this position.
Offline is imposed automatically with the keyswitch in run or
locked position when a fatal diagnostic is detected.
Locked Keyslot diagonal, one-quarter turn clockwise from Run.
In this mode, the DPU executes the functions defined in its
point database. Reloads and database changes may or may
not be permitted, depending on the DPU configuration as
shown on Interaction Page 9.
Metso Automation MAX Controls • • • • 277573 • • • •
DPU Front Panel
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