Interface Specifications > Intrinsically Safe I/O Cards

I.S. DO, 4-Channel

Installation Notes

The I.S. 8-channel terminal block is recommended to provide screw terminations for field wiring for the I.S. DO, 4-channel card. An optional block is the I.S. loop disconnect 8-channel terminal block.

Specifications

Table: I.S. DO, 4-Channel
Item Specification
Number of channels Four
Isolation

LocalBus to any channel: 60 VAC

Between channels: None

I.S. channel to non-I.S. rail: 250 VAC

Output range 22 V (open circuit) 11 V at 45 mA 25 VDC (maximum)
Output rating 45 mA (min.)
Off state leakage N/A
LocalBus current (12 VDC nominal), per card 560 mA
Current limit per channel 45 mA
Configurable channel types

Discrete output : Output stays in the last state submitted by the controller.

Momentary output : Output is active for a pre-configured time period (100 ms to 100 s).

Continuous pulse output : Output is active as a percentage of a pre-configured base time period (100 ms to 100 s). Resolution is 2 ms.

Optional loop disconnect Yes
Mounting Assigned slot of I/O carrier

Wiring Diagram

Figure: Wiring Diagram for I.S. DO, 4-Channel