TSDI-1624C Safe Current-Limited Digital Input FTA (24 V DC, 16 Channels)

The TSDI-1624C module is a field termination assembly (FTA) that provides a secure interface between the system interconnection cable (SICC-0001/Lx) and external field wiring via screw terminals. It is designed for digital input signal interfacing from Class I, Division 2 hazardous locations.

Key Features:

• Channel Configuration: 16 channels divided into two groups of 8, each protected by a 250 mA fuse in the common + line.
• Redundancy: Connects with a redundant pair of SDI-1624 modules for enhanced reliability.
• Mounting: Universal snap-in provision for standard DIN EN rails.
• Screw Terminals: Ensures secure and reliable connection of field wiring.

Technical Data:

General:

• Type Numbers: FS-TSDI-1624C, FC-TSDI-1624C
• Approvals: CE, TUV, UL, CSA, FM

Input:

• Number of Input Channels: 16 (2 groups of 8)
• Input Voltage: 24 V DC, -15% to +30%
• Input Current: ≤ 15 mA at 24 V DC (with a redundant pair of SDI-1624 modules as load)
• Igniting Current per Channel: < 100 mA at 24 V DC +30%

Physical:

• Module Dimensions: 170 × 70 × 60 mm (6.69 × 2.76 × 2.36 in)
• DIN EN Rails: TS32 / TS35 × 7.5
• Used Rail Length: 171 mm

Fuse:

• Fuse Rating: 250 mA
• Fuse Dimensions: 5x20 mm
• Voltage Rating AC: 400 V
• Voltage Rating DC: 400 V
• Manufacturer: SOC
• Manufacturer PN: SHV12 250 mA
• Maximum Output Current per Fuse: 175 mA

Termination:

• Screw Terminals:
  • Max. Wire Diameter: 2.5 mm² (AWG 14)
  • Strip Length: 7 mm (0.28 in)
  • Tightening Torque: 0.5 Nm (0.37 ft.-lb)

Field Signal Specifications for Non-Incendiary Field Circuits to Class I Division 2:

• Max. Closed Loop Resistance: 250 Ω
• Min. Open Loop Resistance: 15 kΩ

HYDROGEN (Group A & B):

• Max. Loop Inductance: 8 mH
• Max. Loop Capacitance: 0.3 µF

NON-HYDROGEN (Group C & D):

• Max. Loop Inductance: 22 mH
• Max. Loop Capacitance: 7 µF