Description
Emerson VE4002S2T1 12P0558X152
Technical Specifications
- Supported Signal Type: Discrete digital safety input signal
- Built-in surge suppression protection components
- Operating Ambient Temperature: 0℃ ~ 60℃
- Storage Temperature: -40℃ ~ 85℃
- Relative Humidity: 5% ~ 95%, non-condensing
- Mounting Method: Standard DIN rail installation inside safety control cabinet
- Connection Type: Screw-type wiring terminals
- Mechanical Matching: Compatible with DeltaV SIS digital input plug-in modules
- Protection Grade: IP20
Functional Features Screw terminals realize stable termination of field safety signal cables. Built-in surge suppression elements absorb instantaneous high voltage pulses from field cables. Internal PCB traces transmit field safety digital signals upward to SIS digital input module. Precise mechanical positioning ensures reliable electrical contact between terminal base and SIS module. Modular structure supports independent replacement under permitted maintenance conditions. Channel isolation design prevents signal cross-talk between different safety loops.
Application Scenarios DeltaV SIS safety control cabinets for chemical plants, oil refineries and natural gas processing stations. It collects status signals from emergency stop buttons, safety limit switches and interlock sensors for emergency shutdown safety loops.
Performance Parameters Internal signal traces maintain low signal attenuation for digital safety signal transmission. Surge protection components suppress transient voltage spikes induced by lightning on field cables. Screw terminals keep stable electrical connection under continuous cabinet vibration. Metal contact pins maintain consistent transmission performance after repeated plugging. Isolation circuit eliminates signal interference between adjacent channels.
Material Composition Flame-retardant PA engineering plastic housing. Nickel-plated copper alloy screw terminals with anti-corrosion coating. Multi-layer flame-retardant glass fiber epoxy PCB substrate. Solid-state surge suppression semiconductor components. Anti-oxidation plated metal positioning contact pins.
Structural Features DIN rail fixed base structure. Front panel equipped with multiple screw terminals for field safety cables. Top metal contact pins mate with bottom connector of DeltaV SIS digital input module. Positioning buckles lock terminal base and align with plug-in SIS modules. Built-in cable routing channel keeps wiring neat inside safety cabinet.
Working Principle Field safety sensors and switches connect to screw terminals of terminal base via shielded cables. Safety digital signals pass through surge suppression circuit and internal PCB traces. Signals transmit upward through top metal pins to SIS digital input module. Surge suppression components absorb transient overvoltage to protect SIS module circuit. SIS module collects field safety status and uploads data to DeltaV safety controller through backplane bus.
Installation Requirements Mount terminal base on standard DIN rail inside safety cabinet and lock mounting buckle. Use shielded twisted-pair cables for field wiring and tighten terminal screws to specified torque. Complete single-point grounding of cable shielding layer inside control cabinet. Verify full contact between top pins and SIS module after module insertion. Separate safety signal wiring from high-voltage power wiring to avoid electromagnetic interference.
Precautions for Use Cut off field loop power before wiring modification. Inspect terminal tightness and cable insulation during regular maintenance cycles. Do not apply voltage exceeding rated range to signal terminals. Keep contact pins clean without dust and metal debris. Do not disassemble or modify internal circuit of terminal base.
