Pakscan IIE System Manual
82 of 132
Publication S177E V2.0 Issue 03/05
The key rotates through 4 positions and is only removable in the Auto position.
Select Auto for normal operation
Select position B before removing master station A
Select position A before removing master station B
There are no electronic components on the PS300 module and its function is solely to allow a unit to
be removed for repair.
After a master station is replaced return the key to the normal position. It may be necessary to reset
the loop in order to completely restore correct operation.
Fig 15: PS300 Keyswitch positions
A
U
T
O
A
B
Auto position
Key removable
in this position
A
U
T
O
A
B
Intermediate
position
Key not removable
A
U
T
O
A
B
M/S A
selected
Key not removable
A
U
T
O
A
B
M/S B
selected
Key not removable
