DO Mass Connection Board (single)

Installation notes

The DO Mass Connection Board (single) provides an interface to the DO, 32-Channel, 24 VDC, High-Side, Series 2 card used with the M-series 40-Pin Mass Termination Block.
Two DO Mass Connection Boards (single) (DO Mass Connection Solution (two)) are required to provide the interface to all 32 channels on the DO, 32-Channel, 24 VDC, High-Side, Series 2 card.
Two, 20-pin ribbon cables (one per board) connect between the DO Mass Connection Solution (two) and the 40-pin Mass Termination Blocks.
Four screw terminals provide the connections for +24 VDC power and ground.
Two rows of four screw terminals and a fuse for each channel enables either isolated relay contact or +24 VDC high-side output mode. Ensure that the jumpers are set for the correct mode for each output. Refer to the figures for wiring diagrams.
Channel fuses and relays can be replaced in the field.

Table: DO Mass Connection Board (single) specifications
Item	Specification
Power for +24 VDC high-side outputs (optional)	+24 VDC ±10% @ 10 A maximum
Control signal current per channel (derived from the DO, 32-Channel, 24 VDC, High-Side, Series 2 Plus card.)	14 mA maximum
Channel type	Relay output
Number of channels	16
Output channel options and ratings	Isolated relay contacts: 250 VAC/24 VDC maximum @ 5 A maximum per channel. +24 VDC High Side: 5 A maximum per channel, 10 A maximum per board.
Isolation	Isolated relay contacts: Isolated at 250 VAC and factory tested to 3600 VDC (channel to system and channel to channel). +24 VDC High Side: Isolated at 250 VAC and factory tested to 3600 VDC (channel to system). No channel to channel isolation.
Dimensions	Height: 8.6 cm (3.4 in.) Width: 29.2 cm (11.5 in.) Depth: 5.6 cm (2.2 in.)

Figure: DO Mass Connection Board (single)

Figure: Wiring for isolated relay mode

Figure: Wiring for 24 VDC high side output mode