Frequently Asked Questions (FAQ)

Q: What voltage does the MDL231 require?
A: It accepts 24 VDC ±20 % on each of its 16 inputs.

Q: How quickly does the module report input changes?
A: All channels update in under 5 ms to the backplane.

Q: Is each channel isolated?
A: Yes, each input is optically isolated to 1500 VDC from the backplane.

Q: What diagnostic information is available?
A: Per-channel wiring fault and voltage presence status bits are reported to the PLC.

Q: Which PLC series support this module?
A: It is compatible with PACSystems RX3i backplanes only.

Q: What environment can it withstand?
A: Operating range is –25 °C to +70 °C and up to 95 % non-condensing humidity.

Q: How many channels per module?
A: Sixteen discrete input channels.

Q: Can it count high-speed pulses?
A: Yes, high-speed counting up to several kilohertz is supported.

Q: What mounting style does it use?
A: Slides into one RX3i backplane slot and latches automatically.

Q: What certifications does it have?
A: CE, UL, and cUL approvals for industrial control applications.