The PACSystems* RX3i/Series 90* 16-Channel Analog Current Input
module provides 16 single-ended input channels. Each input can be
configured using the configuration software for any of three input ranges:
4 to 20 mA
0 to 20 mA
4 to 20 mA Enhanced
High and Low alarm limits are available on all ranges. In the 4 to 20 mA
Enhanced range, a low alarm limit can be set up to detect input current from
4 mA to 0 mA, providing open-wire fault detection in 4 to 20 mA
The module also reports module status and external power supply status to
the CPU using its assigned program reference addresses.
This module can be installed in any I/O slot that has a serial connector in an
RX3i or Series 90-30 system.
This module consumes 120 mA from the 5 VDC bus on the Controller
backplane. It also requires 65 mA plus current loop current(s) from a
user-supplied +24 VDC supply.
The MODULE OK LED provides module status information on power–up as
ON: status is OK, module configured;
OFF: no backplane power or software not running (watchdog timer
Continuous rapid blinking: configuration data not received from CPU;
Slow blinking, then OFF: failed power–up diagnostics or encountered
code execution error.
The USER SUPPLY LED indicates that the external 24 VDC supply is within
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