B&B Electronics 232DRIO manual Isolated Mechanical Input Relay Outputs

232DRIO EXTERNAL CIRCUIT

Opto Isolated Input

5-30 Vdc/Vac

Figure 4.4 - Isolated Mechanical Input

Relay Outputs

Relay outputs are used to turn external devices on or off. Relay outputs are CMOS/TTL compatible and can also operate between 0- 24Vdc and 0-115Vac. Outputs can be used to control solid state output modules, CMOS and TTL logic circuits. Caution must be taken not to exceed the power capability of the outputs. Refer to the output specifications in Chapter 1.

Setting an output line to a "1" forces the output HIGH, and setting an output line to a "0" forces the output LOW. Both relays are de- energized at factory default settings.

NOTE: The relay circuits are not UL® approved for 120 Vac @ 10A or 30 Vdc @ 8A (resistive) maximum line service in regards to contact ratings. However, the printed circuit traces were followed using UL standards (UL #1950) for minimum width and separation. For the previous reason and safety concerns, we recommend a maximum continuous rating of 8 amperes. In conclusion, the voltage should still comply with the rated relay contact voltage of 120 Vac/30 Vdc max. but recommended @ 8A or lower.

It is the customer’s responsibility to determine the ultimate safety and acceptability of our products. Failure to stay within these specifications could result in damage to the unit and will void warranty.

232DRIO-0308 Manual 17

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

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