Honeywell Series 8 I/O - 4.6 Digital Output 24 V IOTA Models 8 X-TDODA1, 8 X-TDODB1

4. Series 8 IOTA Pinouts
4.6. Digital Output 24V IOTA
Models 8X-TDODA1, 8X-TDODB1
R500 Series 8 I/O User's Guide 93
April 2017 Honeywell
4.6 Digital Output 24V IOTA
Models 8X-TDODA1, 8X-TDODB1
CAUTION
When wiring the Digital Output 24V ensure that the
external power is not reversed or the IOM is damaged.
The Series 8 Digital Output 24V IOTA board is represented by the following information
and graphics.
To access the parts information for the:
 module
 IOTA
 terminal plug-in assembly, and
 fuses
associated with this board and module, refer to Digital Output 24V in the Recommended
Spare Parts section.
Field wiring and module protection
The Digital Output 24V Module provides a unique and highly functional output power
protection method. When a short occurs in the field the following occurs:
 the output circuits sense the over-current condition and shut down the output
 the shutdown of the point places the mode of the point into manual
 an Over-current Soft Failure is generated
This failure is maintained until the short circuit condition is repaired and the point is
again supplying the proper current.
Only one channel is affected at a time. If multiple channels are affected, they are
individually shut down. Any channels that do not have a short circuit condition are
unaffected.
 Each channel in a Digital Output module can handle a maximum load of 100mA.
IOTA board and connections
Series 8 24V Digital Output 9 inch, non-redundant IOTA is illustrated in the following
figure.