DO, 8-Channel, 24 VDC, Isolated

The DeltaV system supports the DO, 8-channel, 24 VDC, Isolated card and the Series 2 DO, 8-channel, 24 VDC, Isolated card in Simplex mode.

Installation Notes

The I/O terminal block is recommended to provide screw terminations for field wiring for the DO, 8-channel, 24 VDC, Isolated card and the Series 2 DO, 8-channel, 24 VDC, Isolated card in Simplex mode. Optional terminal blocks are the Fused I/O terminal block and 16-pin mass termination block.
If you use a mass termination block with the DO, 8-channel, 24 VDC, Isolated card, refer to the termination block specifications for the output rating for each block. Those specifications might be more restrictive than the specifications listed in the following table.
This card requires snubbers for inductive loads. Refer to the Related information section of this topic for links to additional information.

Table: DO, 8-Channel, 24 VDC, Isolated Specifications
Item	Specification
Number of channels	Eight
Isolation	Each channel is optically isolated from the system and from each other and factory tested to 1500 VDC.
Output range	2 VDC to 60 VDC
Output rating	1.0 A (inrush 4.0 A for <100 ms; 6.0 A for <20 ms)
Off-state leakage	1.2 mA maximum
LocalBus current (12 VDC nominal), per card	100 mA typical 150 mA maximum
Field circuit power, per card	None
Configurable channel types:
Discrete Output	If FAIL_ACTION_MODE is Hold last value (default): Output stays in last state submitted by the controller. If FAIL_ACTION_MODE is Go to configured failure action mode: Output is driven to the configured faultstate value.
Momentary Output	If FAIL_ACTION_MODE is Hold last value (default): Output finishes current pulse. If FAIL_ACTION_MODE is Go to configured failure action mode: Output is driven to the configured faultstate value and the channel is re-configured as a latched output.
Continuous Pulse Output	If FAIL_ACTION_MODE is Hold last value (default): Output continues pulsing. If FAIL_ACTION_MODE is Go to configured failure action mode: Output is driven to the configured faultstate value and the channel is re-configured as a latched output.
Optional fuse	2.0 A (inrush 5.0 A for <10 ms at 0.1% duty cycle)
Mounting	Assigned slot of I/O carrier

Figure: Wiring Diagram for DO, 8-Channel, 24 VDC, Isolated