Eaton MTL5501-SR Instruction Manual

Also see for MTL5501-SR: Instruction manual

Contents

INM 5500 Rev 10556 7 6 MTL5582/MTL5582B - Resistance IsolatorSingle channel, to repeat RTD signalsThe MTL5582 or MTL5582B connect to a 2-, 3-, or 4-wire resistance temperature device (RTD)or other resistance located in a hazardous area, isolates it and repeats the resistance to amonitoring system in the safe area. The module is intended typically (but not exclusively) foruse with Pt100 3-wire RTDs. Switches enable selection of 2-, 3-, or 4-wire RTD connection.The MTL5582/ MTL5582B should be considered as an alternative, non-configurable MTL5575,for use in RTD applications where a resistance input is preferred or needed instead of 4/20mA.The design is notable for its ease of use and repeatability. The number of wires which canbe connected on the safe-area side of the unit is independent of the number of wires whichcan be connected on the hazardous-area side. The module drives upscale in the case of opencircuit detection. The MTL5582B replaced the MTL5582 during 2016 to improve the responsecharacteristics of the safe area circuit.Hazardous area Safe areaTerminal Function1 RTD input –ve3 RTD input +ve4 3-wire RTD input –ve5 4-wire RTD input +ve9 RTD output –ve10 RTD output +ve11 RTD output –ve12 RTD output +ve13 Supply –ve14 Supply +vePWRMTL5582OFF positionON positionSw 1 Sw 2RTD type selection switchesSw 1 Sw 22-wire OFF ON3-wire ON ON4-wire ON OFFWarning: Check polarity of terminals used for safe-area connections. Safe-area terminals9, 10, 11 and 12 are unipolar so it is essential to select a positive terminal on the MTL5582/MTL5582B for connection to the positive of the RTD input card.Figure 6 32:Top labelfor MTL5582/MTL5582B