Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page III
5.2
Fuses .................................................................... 27
5.3
12VDC Power Supply ............................................... 28
5.4
Safety Interface Board ............................................. 28
5.4.1
MH4 ................................................................................. 29
5.4.2
MH5 ................................................................................. 29
5.4.3
Phase Monitor .................................................................... 30
5.4.4
Digiset Timer ..................................................................... 31
5.4.5
Bypass Switches ................................................................ 31
5.4.6
Inspection Switches............................................................ 32
5.4.7
Connections ...................................................................... 32
5.5
Microprocessor ....................................................... 33
5.5.1
CPU .................................................................................. 33
5.5.1.1
CPU Battery ................................................................ 34
5.5.1.2
LED Description ........................................................... 35
5.5.1.3
Reset Button ............................................................... 36
5.5.1.4
CPU Connectors ........................................................... 37
5.5.1.5
S2 Slide Switch ........................................................... 39
5.5.2
Input/Output Boards .......................................................... 40
5.5.2.1
Addressing .................................................................. 42
5.5.2.2
Terminal Wiring ........................................................... 42
5.5.2.3
Input/Output LEDs ....................................................... 43
5.5.2.4
Board Status LED ......................................................... 43
5.5.2.5
I/O Bus Communication Connectors ............................... 44
5.5.2.6
Programming Connector ............................................... 44
5.5.2.7
Power Connector ......................................................... 44
5.5.2.8
Jumper Blocks ............................................................. 45
5.6
Motor Control ......................................................... 46
5.6.1
Across-the-line Starting ...................................................... 46
5.6.2
Wye-Delta Starting ............................................................. 47
5.6.3
Solid-State Starting ............................................................ 48
5.7
B.O.R.I.S. .............................................................. 49
6.
MH-3000 SCREENS AND DIAGNOSTICS ...... 50
6.1
Run Mode .............................................................. 50
6.1.1
Run Mode Screens ............................................................. 50
6.1.1.1
Banner Screen ............................................................. 51
6.1.2
Show I/O Status ................................................................ 52
