McCain 2070LX - 2070-4 A Block Diagram

2070LX Controller – User Manual 57
Version 1.0
5.3 2070-4A BLOCK DIAGRAM
PS2
Conn. 12 Pos.
1.- +5 VDC
2.- +12 VDC SERIAL
3.- -12 VDC SERIAL
4.- DC GND #1
5.- +5 VDC STANDBY
6.- +12 VDC ISO
7.- DC GND
8.- PWR DOWN / AC FAIL
9.- PWR UP / SYS RESET
10.- EQUIPMENT GND
11.- LINESYNC
12.- NA
AC Input
PS1
Conn. 10 Pos.
1.- +5 VDC
2.- +12 VDCSERIAL
3.- -12 VDC SERIAL
4.- DC GND #1
5.- +5 VDC STANDBY
6.- +5 VDC SENSE
7.- DC GND SENSE
8.- AC FAIL (VME)
9.- SYSRESET (VME)
10.- NA
Fuse
Switch
AC Protection
Zero-crossing
Detection Circuit
Isolation Stage AC Monitor
+5 VDC Module
+12 VDC Module
+12 VDCISO
Module
EMI Filter
+5 VDC Stand-by
Circuitry
+3 VDC Regulator
Voltage Divider
+12 VDCISO
Monitor
-12 VDC Power
Supply
Voltage Divider
Voltage Divider
Oscillator
Microcontroller
Voltage Status
LED’s Indicators
+5 VDC
+12 VDC
-12 VDC
+12 VDCISO
1
2
2
1
1
2
Control
Signal
Output stage
3
2
Control
Signal
Output stage
3
5
4
3
4
4
5