Honeywell 900U02-0100 - Table 16 - AI Channel

Revision 10 ControlEdge HC900 Process & Safety Controller User and Installation Manual 129
May 2019
Field wiring for Analog Input
The UIO is optimized for use with 2-wire, 3-wire or 4-wire transmitters. All 16 channels can accept
inputs from most 2-wire, 3-wire or 4-wire transmitters without any special wiring.
The following are the items that UIO AI supports.
 4-20mA current inputs;
 Devices that accept external power to power a 4-20mA current source and(optionally) the
device;
 Devices that return the current to the ground terminal of the external 24V power supply;
 External devices that can moderate non-compliant devices. For example: 'moderators' =
current mirrors, isolators, GI/IS barriers, mv-to-I.
See Table 16 for the specification of AI Channel:
Table 16 – AI Channel
Parameter
Specification
Input type
Current (2, 3, or 4 wire devices)
Input Channels
16 Maximum per module
(with or without open wire detect)
A/D Converter Resolution
16 Bit
Input Range
4-20 mA
Crosstalk, dc to 60 Hz (channel-to-
channel)
58 dB
Input Impedance
250 Ω nominal
Maximum Input Voltage (any input
referenced to common, no damage)
0 – 30 V
Input Scan Rate
10 ms
Hardware accuracy
0.1 % of full-scale (23.5 ± 2 °C)
0.17 % of full-scale (0 to +60 °C)
Transmitter Field Power Conditioning
Current limited to 24 mA
Input Filter
First-order low-pass 1 kHz
The following items are not directly supported by UIO AIs:
 Voltage inputs (1-5 or mv)
 Thermocouples
 RTDs
 NAMUR devices
• Devices that supply current, which is not first supplied by the external 24 V to the device. For example,
a device that creates current (even if referenced to Honeywell ground).