4. Series 8 IOTA Pinouts
4.3. Analog Output IOTA
Models 8X-TAOXA1, 8X-TAOXB1
74
Series 8 I/O User's Guide
R500
Honeywell
April 2017
Figure 16 Series 8 differential Analog Input 12 inch, redundant IOTA
4.3 Analog Output IOTA
Models 8X-TAOXA1, 8X-TAOXB1
Note
: 8X-TAOXA1 and 8X-TAOXB1 support both the HART and Non-HART
Modules.
The Series 8 Analog Output 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
Recommended
Spare Parts
section.
Field wiring and module protection
The Analog Output module provides an output current range of 0ma, and 2.9 ma through
21.1 ma based on the requested Analog Output by the Series 8 controller. The output
current including the HART modulated signal, does not exceed 22.5 mA.
Each field wiring pair can be shorted together without damage to the module or
IOTA. Other channels in the same module(s) are not affected.
A +30 Vdc source can be continuously applied across the OUT+ to OUT- terminals
of the IOTA without damage to either module(s) or IOTA (that is, with the positive
lead of the source connected to OUT+ and the negative lead connected to OUT-). To
prevent damage to the IOTA surge protection diodes, the current must be limited to
500 mAdc if the source is applied in the reverse polarity (that is, with the positive
lead of the source attached to OUT-, negative lead attached to OUT+). This 500
mAdc restriction does not apply in the positive polarity case.
IOTA board and connections
Series 8 Analog Output 6 inch, non-redundant IOTA is illustrated in the following figure.