Transformer Temperature Control

TR42

Features

• 4 RTD PT100 Inputs (3 wires)
• Display of the actual temperature
• Display & storage of the highest temperature of each RTD
• 3 programmable output contacts from 0° to 220°C level 1, level 2 and FAN control
• Automatic and “Always ON” fan mode
• Alarm contact of TR42 failure or PT 100 disconnection 
• Automatic fan start every week (bearing protections)
• Insulated RS485 communication port
• 4-20mA output corresponding to the temperature readings
• 100% compatible with TR-42S1 & TR-42C1
• QR code to access product information and videos

Technical specifications

• Scale: -10 ÷ +240 °C
• Accuracy: ±1% F.S. ± 1 digit
• Settings: L1, L2, FAN: 0 ÷ 220 °C
• Supply voltage: 85÷264Vac (115÷300Vdc) or 24Vdc (select model)
• Maximum power consumption: 4VA or 4W
• Inputs: 4 platinum sensors PT100 with 3 wires. 500 Ohm max wire impedance.
• Outputs: FAN: normally open, Imax 16A 240Vac/24Vdc resistive load (7A continuous) /1HP 240 Vac. L1,L2: change-over 5A(n.o) res. load 250 Vac.
• FAULT: 5A (n.c)
• Operational Temperature: 0 ÷ 50 °C
• Storage Temperature: –20 ÷ 70 °C
• Relative Humidity: 90% (non-condensing)
• Burn in: 48 hours
• Dielectric Withstand Voltage: 2 kVac, 60s
• Construction: according to the VDE, UL, CEI standards.
• Terminal block: draw-out terminals for 4 mm² cables (12 AWG).
• Frame: In ABS self-extinguish with frontal protection (IP54).
• Assembly: to be fixed in the structure through stirrups and screws.
• Dimensions: 96x96x114 mm Cutout: 91-0,5x 91-0,5 mm (±0,5 mm)
• Weight: 500 grams
• Communication port: Insulated RS-485, insulation 1500 Vdc. Modbus RTU
• Communication protocol: MODBUS RTU, function: 03h, 04h, 05h, 06h, 10h.
• 100% compatible with TR-42S1 & TR-42C1

Communication

Communication capabilities are available in the TR42 connecting the RS485 port in a network controlled by a supervisor device (PC). The protocol used is Modbus RTU. The connections have to be made with shielded twisted wires.

Perfect for remote cloud supervision.

Functions & Signals

• 3 Digits Display for temperature reading
• 1 Digit Display for the channel identification.
• Fault Led for immediate status reading
• Output relays status leds
  
• Display test function
• Password protected menu
• Autoscan of each input channel

PT100 Inputs

• 4 Programmable PT100 inputs
• Select between 1 or 4 input channels
• 3 Wires cables PT100 sensor
• Range -10 to 240°C
• Short circuit or open circuit detection
  
• Dedicated led for input status

Fan Control

• 1 Programmable Output relay for fan control
• Select between 3 or 4 input channels
• Programmable weekly fan start-up for bearing protection
  

Retrofit

100% compatible with older models TR-42S1 & TR-42C1

• Same 4 inputs RTD & same cabling numbers
• Same output contacts & cabling
• Now with communication port in all models for future proof projects
• Improved menu and security