Siemens 16416-1 Modular Marshalled Termination Unit

Technical SpecificationsModel:16416-1 Brand:Siemens Product Type:Modular Marshalled Termination Unit System:QUADLOG Safety Instrumented System / APACS+ DCS System Power Supply:24V DC Mounting:DIN rail mount Operating temperature:-20℃ ~ +70℃ Storage temperature:-40℃ ~ +85℃ Relative humidity:5%~95%, non-condensing Weight:1.95kg Dimension:450mm130mm65mm

System compatibility16416-1 belongs to Siemens Moore QUADLOG series. It matches QUADLOG safety I/O modules including analog, discrete input and output modules, used as marshalling wiring terminal assembly, compatible with APACS+ DCS platform.

FunctionThis modular marshalled termination unit serves as intermediate wiring interface between QUADLOG rack I/O modules and field instruments. It connects control rack via ribbon cable, field sensors and actuators are wired to screw terminals on the unit. It provides signal isolation, wiring transition and overcurrent protection for safety loops, simplifies field wiring maintenance and troubleshooting of SIS safety circuits.

InstallationPower off cabinet power and field loop circuit before installation. Snap the termination unit onto DIN rail. Connect ribbon cable between marshalling unit and QUADLOG I/O rack. Wire field transmitters, solenoids and sensors to screw terminals. Verify wiring continuity and insulation resistance, complete SIF loop function test before online operation.

InterfaceRibbon cable connector to I/O rack, multi-channel screw terminal block, circuit protection fuses, status LED indicators.

FeatureQUADLOG dedicated safety I/O marshalling termination assembly, integrated fuse protection, convenient field wiring, galvanic isolation, Class I Division 2 hazardous area certification. Obsolete legacy spare part, used for QUADLOG SIS safety signal wiring maintenance and replacement.

DiagnosticNo signal transmission: check ribbon cable connection, fuse burnout and terminal loose contact. Channel open circuit alarm: inspect field cable breakage and terminal wiring. Short circuit fault: check field wire short and load coil insulation.

Product BriefSiemens 16416-1 is QUADLOG modular marshalled termination unit, widely used in petrochemical, power and pulp & paper industries for safety instrumented system field signal wiring transition.

DisclaimerAll parameters are for reference only and shall not be used as the basis for quotation. Goods are scarce, overseas delivery lead time is 3-7 working days. It is only used for equipment maintenance and renovation.