Description
Emerson VE4002S1T1 12P0557X152
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 support secure connection of field safety instrument cables and simplify maintenance work. Built-in surge suppression components absorb transient voltage spikes on field signal cables. Internal PCB traces transmit field safety digital signals upward to SIS digital input module. Precise positioning structure ensures stable electrical contact between terminal base and SIS module. Modular structure supports independent replacement under permitted maintenance conditions. Channel isolation design eliminates signal cross-talk between safety loops.
Application Scenarios Safety instrumented system cabinets of chemical plants, oil refineries and natural gas processing facilities. It collects feedback signals of emergency stop buttons, safety limit switches and fire interlock sensors for DeltaV SIS emergency shutdown control loops.
Performance Parameters Internal signal traces maintain low attenuation for digital safety signal transmission. Surge protection components suppress lightning-induced transient overvoltage on field cables. Screw terminals maintain reliable connection under long-term cabinet vibration. Contact pins keep stable electrical performance after repeated plugging of SIS modules. Isolation circuit eliminates crosstalk between adjacent signal channels.
Material Composition Flame-retardant PA plastic main housing. Nickel-plated copper alloy screw terminals with anti-corrosion coating. Multi-layer glass fiber epoxy printed circuit board. Solid-state surge suppression semiconductor elements. Gold-plated anti-oxidation metal contact pins.
Structural Features DIN rail fixed base structure for cabinet mounting. Front panel arranged 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 SIS plug-in modules. Built-in cable guiding groove for neat cable arrangement inside safety cabinet.
Working Principle Field safety equipment connects to screw terminals of terminal base through shielded cables. Safety digital signals pass through surge suppression circuit and internal PCB traces. Signals transmit upward through top contact pins to SIS digital input module. Surge suppression components absorb transient overvoltage to protect SIS module circuit. SIS module reads field safety status and transmits data to DeltaV safety controller via backplane bus.
Installation Requirements Mount terminal base on standard DIN rail inside safety cabinet and lock mounting buckle. Adopt shielded twisted-pair cables for field wiring and tighten terminal screws to specified torque. Carry out single-point grounding for cable shielding layer inside control cabinet. Check full contact between top pins and SIS digital input module after module installation. Separate safety signal cables from high-voltage power cables to prevent electromagnetic interference.
Precautions for Use Cut off field loop power before wiring adjustment. Inspect terminal tightness and cable insulation during regular maintenance. Do not apply overvoltage to signal terminals. Keep contact pins clean without dust and metal scraps. Do not disassemble or modify internal circuit of terminal base.
