OPERATION AND MAINTENANCE MANUAL
THREE PHASE MCRII SERIES BATTERY CHARGER
Rev: 1.6
03/08/2010
Doc: MAN-3P_MCRII_REV1.6.Doc
Page 11 of 29
Magellan Powertronics
68 Cocos Drive, Bibra Lake, WA 6136 Tel: 08 94346621 Fax: 08 94346623
Microcontroller Board (A3). The buzzer sounds for any alarm condition and will stay on for
the duration of the alarm. The buzzer can be muted by depressing the
Mute
button on the
front panel.
The Microcontroller Board provides voltage and current control references to the Interface
board via a D/A converter. These references are compared with voltage and current feedback
signals. The output signal from the error amplifier is fed to the SCR Firing Circuit (A1) where
it is compared with a reference ramp synchronised to the mains. The output of the comparator
then controls a high frequency oscillator to fire the thyristors through pulse transformers.
All metering functions are generated by the Microcontroller (A3) from filtered inputs
obtained from the Interface Board (A2). These signals are routed through the CPU analogue
inputs and are displayed on the graphical LCD display.
