Control Unit Connections | Emerson IP221 guide

MEP 3B

I.S.

To head amplifier

Screen to be connected

Relays

Protective

Earth

Neutral

Live

MEP 3L

I.S.

Supply

Figure 2.6 - Control Unit Connections

14

Image 14

Emerson IP221 appendix Control Unit Connections

Contents

Installation ContentsSafety Information Introduction Fault Finding Specification and description Protection of permanently installed equipment Explanation of symbols Hi-Sens cylindrical sensors SensorsGap sensors Interface detection Attenuation method Figure Reflection Method Figure Normal acting head amplifiers Solids Density DetectionHead Amplifier Units Sensor State Output Ii Inverse acting head amplifiersType Industrial Case Marine Control Units Installation 2.1 Calibration Head amplifier internals Iii Interface Sensors Attenuation Method Calibration procedure by sensor type Hi-Sens SensorsIi Gap Sensors Iv Interface Sensors Reflection Method Sludge Sensor Sensor and head amplifier installation Adjacent head amplifier mounting detailsPage Control unit installation Wiring Cable Relay Ratings Ii Head Amplifier UnitIii Control unit Control Unit Connections II 1 G EExia IIC EN 50014 & EN Intrinsically safe installationCertificates of Conformity Unit not switching Fault FindingFault indicated Relay contacts not changing Sensor specification Head Amplifiers Temperature Range Power consumptionIntrinsic safety Housing Rack Mounted Unit Recommended Spare Parts 5.1 Sensor and head amplifierStandard Control Unit Options Intrinsic Safety Mounting Sensor Type Test SwitchAppendix I Part Numbers Sensor Connection Intrinsic Safety Mounting Mains Voltage Output Relay Racks Appendix II List of illustrations Section Title Appendix III List of tables Section Title Maintenance / Inspection Abcdef International Americas