47
Optimizer3 pre-assigns default control inputs, but they can be changed if desired:
• AUX 1 input can be assigned to the Opening Coil
• AUX 2 input can be assigned to the Closing Coil.
• AUX 3 input can be assigned to the 52a auxiliary switch
• AUX 4 input can be assigned to the 52b auxiliary switch
The recommended AUX 3 connection is to a spare 52a auxiliary switch that is wetted by the station battery voltage. There are
alternate wiring connections which give an equivalent timing signal for AUX 3- connection in parallel to an in service 52a auxiliary
switch or connection in parallel with the Red Light bulb. The Red Light/52a Polarity setting is specific to the connection type.
Table 5
– Aux 3 Input Polarity
AUX 3 Input Wiring Connection
AUX 3 Polarity setting Type
In series with wetted spare 52a auxiliary switch
Negative
Recommended
In parallel with in service 52a auxiliary switch
Positive
Alternate
In parallel with red light bulb
Negative
Alternate
The recommended AUX 4 connection is to a spare 52b auxiliary switch that is wetted by the station battery voltage. There are other
wiring connections which give an equivalent timing signal for AUX 4- connection in parallel to an in service 52b auxiliary switch or
connection in parallel with the Green Light bulb. The Green Light/52b Polarity setting is specific to the connection location.
Table 6
– Aux 4 Input Polarity
AUX 4 Input Wiring Connection
AUX 4 Polarity setting Type
In series with wetted spare 52b auxiliary switch
Positive
Recommended
In parallel with in service 52b auxiliary switch
Negative
Alternate
In parallel with green light bulb
Positive
Alternate
NOTE
: Wiring connections shown in the following diagrams (Figure 56).