Cold Weather Catalog - Chromalox Precision Heat and Control

Controls®HTLSC1D2Series C1D2Heat Trace Line SensingControl Panel• Approved for Class 1, Division 2Groups B, C and D• Solid State Relay Output Rated30 Amps 40˚C• Universal Inputs• NEMA 4 Enclosure• Ground Fault Alarm• Programmable High/LowTemperature Alarms• Programmable CurrentAlarmApplications• Freeze Protection• Fuel Gas Preheating and Superheating• Fuel Oil Preheating• Hydrocarbon and Chemical Product Piping• Power Generation Plants152DescriptionThe Chromalox HTLSC1D2 series panels aremicroprocessor based temperature controland monitoring units for heat tracing used infreeze protection and process temperaturecontrol applications.This series of panels can be confi guredfor ambient or line sensing control. TheHTLSC1D2 series implement a scaleabledesign such that they can be confi gured withor without communications, ground faultmonitoring or enclosure heater.This unique format offers a design that canbe tailored both by price and features to meetthe most challenging demands in heat traceapplications. For example: The HTLSC1D2series can be networked together via RS-485MODBUS and the Chromalox Windows basedChromasoft SpecView software package. Theoptional ground fault monitoring addressesthe national electric code requirements andreduces the cost of installing costly groundfaultcircuit breakers. In the event of sub-zerotemperatures the optional enclosure heater isavailable. The Chromalox HTLSC1D2 seriesoffers single and dual loop designs and areapproved for Class 1 Division 2 Areas.The HTLSC1D2 series have programmableinputs (thermocouple, RTD, mA, VDC), On/Offor PID control, Auto-tune function, High/Lowtemperature alarms, current alarm, and sensorfailure indication. The heat tracing circuit isswitched by a 30 amp solid state relay rated at40˚C ambient.The Chromalox HTLSC1D2 series panel comesready to install and includes control and powerwiring terminal blocks for fi eld connections.Technical SpecificationsArea of Use: Class 1 Division 2Approvals: UL, cUL, CESupply Voltage: 120, 208, 240, 277, and480 Vac.Ambient Operating Temperature: 32 - 104˚F(0 - 40˚C), -32 - 104˚F (-35.5 - 40˚C) withOptional Enclosure Heater.Protection: NEMA 4X Fiberglas ®Communications: RS-485 MODBUSTemperature Sensor Input: J, K, T, E, B, R, S,N, L, PT100, mV, mA, VOutput: Solid State Relay rated 30 amps@ 40˚C.Current Alarm (Low): 0 - 50 Amps in .1 ampresolution.Temperature Alarms: Field selectable Dev.High/Low, Dev. Band High/Low, ProcessLow /High, Latching, Non-Latching.Control Modes: Field Selectable On/Off, PID,Auto-tune.Ground Fault Alarm: Adjustable Trip Level30 - 300mA; Adjustable Trip Delay 0 - 1 Sec.