NOVAR 300 Operation & Maintenance Manual
NOVAR_CM
Page 6 of 29
1.2 DESCRIPTION AND OPERATION
Multi-stage controllers are available in standard units of 6 and 12 stages. These provide up
to 12 pairs of "volt-free" contacts.
The following switches are mounted on the controller front panel :
* An auto/manual control (upper button)
* A directional control , 0, - (lower button)
* A ten-way programme selector switch
Depressing the auto/manual switch causes the Controller to enter MANUAL mode as
indicated by the LED adjacent to the switch. Capacitor stages can be switched 'in' by
pressing the directional control button once. Pressing this button once more places the
Controller in the MANUAL 'off' position and no further stages will be switched 'in' or 'out'.
Pressing this button once more will result in capacitor stages being removed until pressed
again. the three LED's associated with this button will, at all times, indicate the operational
mode.
When capacitors are being connected, a LED associated with the inductive (IND) control
lights. As they are being disconnected, a LED associated with the capacitive (CAP) control
lights.
The ten-way selector switch is used to select:
* The time interval between steps
* The sequence in which the stages are connected
* The limit which determines the number of steps taken in the sequence selected.
These are detailed in section 3.3.
