FASTRON. Oztherm F311 Series Calibration Procedure

Fastron - Oztherm Power Controller
F311 Series Calibration Procedure
In this article we discuss the calibration procedure for F311 Series Single Phase
Thyristor (SCR) Controllers.
Please refer to the F311 installation and commissioning manual
connection instructions. Or for Engineering Drawings see the following
Thyristor Wiring Diagrams - New

 Control Wiring Diagrams - New
Controller Identification
F311 Controllers are fitted with a single PCB marked F321. There should be a silver
sticker on the PCB with a serial number in the format of YY-MM-Serial #
Controller Options Identification
There are various options available for this controller which the most common are listed
and indicated by the following nomenclature
(A) - A.C. Voltage Regulation

(C) - Current Limit and Trip

 (CC) - Voltage Limit and current Trip. Current Source (A.C. Current Control)
(CCE) - Voltage Limit and current Trip. Current Source (D.C. Current Control)

 (CE) - Current Limit and Trip (D.C.)
(F) - High Speed Fuses

 (FW) - Four Wire Load
(MI) - Meter Output of Average Current (1mA for moving Coil Ammeter)

(MP) - Meter Output of Average Power (1mA for moving Coil Ammeter)

(MV) - Meter Output of Average Power (1mA for moving Coil Ammeter)

(PH) - Phase Loss Output

(PW) - Power Limit

(T) - Thermal Overload Protection

For detailed descriptions please refer the
Various "Specials" (SP) versions exist with customised functions and in many cases very
minor changes to suit specify customer applications. See here for detailed of most SP
versions which have been created to date.
Calibration Procedure
Author – D. Rehe Feb 2020
F311 installation and commissioning
for detailed wiring
manual.