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Yokogawa TM21001045-2SN
Product Overview:
The TM21001045-2SN is a 45-point wiring terminal block module designed for the CENTUM VP and CS3000 DCS I/O stations. It provides organized, secure connection points for field instrument wiring to I/O cards. The “2SN” suffix indicates the terminal block type with screw-clamp connection for reliable wire termination.
Detailed content
Technical Specifications:
- Model Code: TM21001045-2SN
- Number of Terminal Points: 45 points
- Terminal Type: Screw-clamp (captive screw, spring-loaded)
- Wire Gauge Compatibility: 0.5 mm² to 2.5 mm² (AWG 20 to AWG 14)
- Rated Voltage: 250 VAC / 30 VDC
- Rated Current: 10 A per terminal
- Contact Material: Phosphor bronze with tin plating
- Insulation Resistance: ≥ 100 MΩ (at 500 VDC)
- Dielectric Strength: 1500 VAC (1 minute, terminal to terminal)
- Operating Temperature Range: 0°C to +55°C
- Storage Temperature Range: -20°C to +70°C
- Relative Humidity: 5% to 95% RH (non-condensing)
- Material Composition:
- Housing: Polycarbonate (PC) + Glass Fiber (GF30%) — UL94 V-0 rated
- Terminal: Phosphor bronze, tin-plated
- Screw: Stainless steel (SUS304)
- Dimensions (W × H × D): 100 mm × 90 mm × 80 mm (approx.)
- Weight: Approximately 350 g
- Mounting Method: DIN rail (35 mm) mounting or panel mounting
Functional Features:
- Provides 45 individual connection points for field wiring
- Color-coded terminal rows for organized wiring (power, input, output)
- Marking strips for wire labeling (supplied with module)
- Pre-wired jumper connections available for common signal routing
- Compatible with all F3-series I/O cards (AI, AO, DI, DO, TC, RTD)
Structural Features:
- Modular design with snap-on cover for wire protection
- Hinged front cover for easy wire access during maintenance
- Grounding bus bar integrated for chassis earth connection
- Cable entry points on top and bottom
Applicable Industries:
All industries utilizing CENTUM VP / CS3000 DCS: Oil & Gas, Petrochemical, Power, Water Treatment, Chemical, Pharmaceutical, Paper
Installation Requirements:
- Mount on 35 mm DIN rail inside I/O cabinet
- Use ferrule-terminated wire ends for AWG 22 and smaller
- Tighten screws to torque of 0.5 N·m (do not over-tighten)
- Maintain wire bend radius ≥ 30 mm at terminal exit
Precautions:
- Do not use wire gauge > 2.5 mm² (AWG 14) — will damage terminal
- Do not use wire gauge < 0.5 mm² (AWG 20) — poor contact reliability
- Ensure stripped wire length is 8 mm to 10 mm for optimal contact
- Do not connect different voltage levels on adjacent terminals without isolation
