The UIO-2, in addition to providing all features provided by UIO, provides the following enhanced
features beginning with R432:
l Is a single board module with physical dimension: 8.5 mm x 14.5 mm x 16 mm (5.5 mm dia) [4 x
4.5 dia x 14 width x 17 height]
l Dimensions of the redundant and non-redundant IOTAs are 12” and 9”, respectively
l Provides one HART modem per I/O channel
l Supports pulse counting on up to four of any of the 32 channels that are configured as DI
l Supports DO ganging within the following eight channel number groups: 1 - 4, 5 - 8, 9 - 12, 13
- 16, 17 - 20, 21 - 24, 25 - 28, and 29 – 32. However, ganging across these groups is NOT
possible.
Beginning with ExperionR501, the following additional enhancements have been provided :
l Supports Sequence Of Events (SOE) functionality for digital input signals on all 32 channels
l Supports 24 V NAMUR type input signals with current (Amps) levels in accordance with IEC
60947-5-6:1999 specifications.
3.6.2 UIO-2 and UIO-1 compared
The following table describes the differences between UIO-2 and UIO-1.
Feature UIO-2 UIO-1
Board Single board module Three board module
IOTA
dimensions
Redundant – 12”
Non-redundant – 9”
Redundant – 18”
Non-redundant – 12”
HART
modem
count
One HART modem per channel Only two HART modems: one
modem dedicated to channels 1-
16 and a second modem
dedicated to channels 17-32.
Pulse
counting
Supported on a maximum of 4 channels where
each channel can be any of the 32 channels
configured as DI. Input pulse frequency less than
or equal to 15 KHz is supported.
Up to 4 channels, within
channels 15 to 18 only, are
supported for pulse counting.
Input pulse frequency of 10 KHz
is supported.
DO
ganging
Supported for 2, 3, or 4 channels within the
following eight channel number groups: 1 - 4, 5 - 8,
Supported for 2, 3,or 4 channels
within any 4 channels. However,
