Interface Specifications > I/O Cards

DI, 8-Channel, 120 VAC, Isolated

The DeltaV system supports the DI, 8-channel, 120 VAC, Isolated card and the Series 2 DI, 8-channel, 120 VAC, Isolated card in Simplex mode.

Installation Notes

The I/O terminal block is recommended to provide screw terminations for field wiring for the DI, 8-channel, 120 VAC, Isolated card and the Series 2 DI, 8-channel, 120 VAC, Isolated card in Simplex mode. An optional terminal block is the Fused I/O block.

Specifications

Table: DI, 8-Channel, 120 VAC, Isolated Specifications
Item Specifications
Number of channels Eight
Isolation Each channel is optically isolated from the system at 250 VAC and from other channels at 250 VAC.
Detection level for On 84 VAC to 130 VAC(1)
Detection level for Off 0 VAC to 34 VAC
Input load (contact cleaning) 2 mA at 120 VAC
Input impedance 60 kΩ
LocalBus current (12 VDC nominal), per card
  • 75 mA typical
  • 100 mA maximum
Field circuit power, per card None
Optional fuse 2.0 A
Mounting Assigned slot of I/O carrier
(1) Phase should be considered when applying AC voltage to multiple input channels.

Wiring Diagram

Figure: Wiring Diagram for DI, 8-Channel, 120 VAC, Isolated