B&B Electronics RS-232 Digital Relay I/O 232DRIO - Manual (Page 19)

232DRIO-0308 Manual 17
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
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 EXTERNAL CIRCUIT
5-30 Vdc/Vac
Opto Isolated Input