Frequently Asked Questions (FAQ)

Q: What makes the ALG442 “multi-function”?
A: It integrates four configurable inputs and four configurable outputs—current or voltage—into a single module, reducing spare parts and wiring.

Q: How accurate are the measurements?
A: Both inputs and outputs offer ±0.05 % full-scale accuracy with 16-bit resolution for precise process control.

Q: Can the inputs and outputs be mixed?
A: Yes—any input channel can be configured for voltage or current, and any output channel likewise, via software settings.

Q: How does the module report wiring faults?
A: Built-in diagnostics detect open-wire conditions on each channel and report status back to the PLC.

Q: Is electrical isolation provided?
A: Yes, 1500 V AC galvanic isolation between every channel and the backplane prevents ground-loop errors.

Q: What is the typical update time?
A: The module scans all eight channels in under 15 ms, delivering timely data for fast control loops.

Q: Which PLC series support this module?
A: It is compatible exclusively with the PACSystems RX3i backplane.

Q: What environmental conditions can it withstand?
A: Rated for –25 °C to +70 °C and 5 %–95 % RH (non-condensing), with conformal coating for harsh environments.

Q: How much rack space does it occupy?
A: It uses one RX3i I/O slot (34 mm wide) yet replaces two separate analog input and output modules.

Q: Does it support HART communication?
A: No, the ALG442 does not include HART; for HART-enabled outputs see IC695AOI622.