8. FAQ – 10 Common Questions (Q&A)

Q1: What type of signal is accepted by the FC‑TSDI‑1624?
A1: It accepts digital / discrete input signals, such as contact closures, limit switches, discrete sensors (e.g. 24 V DC switches).

Q2: How many input channels does it support?
A2: 16 independent channels.

Q3: What is the nominal input voltage for those channels?
A3: 24 V DC (with tolerance of –15% to +30%).

Q4: Is there protection if a field input has a short or overvoltage?
A4: Yes — the module includes PTC resistance and overvoltage protection to isolate faults and prevent a single input failure from disabling all.

Q5: Can this module be used in redundant safety architectures?
A5: Yes — it supports parallel redundant mode (“+R”) for enhanced reliability.

Q6: What is the operating temperature range?
A6: Typically –40 °C to +70 °C.

Q7: What are its dimensions and weight?
A7: Approx. 90 mm × 70 mm × 58 mm, weight around 0.2 kg (200 g).

Q8: What wire gauge and terminal torque should be used?
A8: Max wire diameter: 2.5 mm² (AWG 14); recommended screw terminal torque: 0.5 N·m.

Q9: What safety / compliance features does it have?
A9: It incorporates fault isolation, overvoltage protection, redundant design options, and is built for safety system use (SIL architecture).

Q10: How should it be mounted with regard to cooling?
A10: Vertical mounting is preferred to facilitate natural convection cooling. If mounted horizontally, ambient temperature must be controlled and free air space allowed.