Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 41
Input/Output boards are used to connect the CPU with the field devices. All inputs
(unless otherwise stated) are 115VAC, and outputs (unless otherwise stated) are dry relay
contacts.
The boards are available as 16-Input and 16-Output boards, or 16-Input and no outputs.
All inputs and outputs have individual LED indicators.
Wiring is done to the removable terminal blocks at the top and bottom of the I/O boards.
Fuses are provided externally, not on the I/O boards.
Programming
Connector
Output LEDs 9-16
Address Sw Block
Commons
Commons
I/O Communication Bus
OUT Connector
TYPICAL I/O BOARD
Terminals
Output Relays 1-8
C1234C5678
C1234C5678
12345678
12345678
10 12 14 16
9
11 13 15
10 12 14
16
9
11 13 15
C
10 12 13 15
9
11
C
14 16
15
C
10 12 13 15
9
11
C
14 16
15
Output LEDs 1-8
Output Relays 9-16
Jumper Block 1-8
Input LEDs 1-8
I/O Communication
Bus IN Connector
12VDC Power
Connector
Input LEDs 9-16
Jumper Block 9-16
Terminals
Status LED