Temperature monitor system for cast resin, dry and oil transformers with 4 inputs for 3 wires PT100 probes.

• Control and showing temperature
• Control of fan systems
• Four independent PT100 inputs with three wires
• Four 250 Volt 10A AC (resistive load) relays of outputs for the
  following functions: pre alarm state, alarm state, fault probe state,
  fan control with hysteresis
• Manual test relays to simulate or check the reliability of the contact
• Advanced programming menu: is allowed able, enable and set
  separately each single channel
• Permanent storing of programmed set of pre-alarm and alarm
  state, on, off fan and history values achieved
• Assembly on panel by simple fixing jaws
• Universal power supply (24 ÷ 240) Volt AC/DC 50/60Hz
• Protocol MODBUS – RTU, RS 485 communication (MT 200 S)
• Protocol MODBUS – RTU, RS 485 communication and galvanically
  insulated analogical output 4-20 mA (MT 200 C)
• Protocol MODBUS – TCP, ETHERNET communication (MT 200 E)
• Tropicalization (optional)

Models

Technical features

Dimensions

• Box 90x90x115 mm included terminal blocks
• Front panel 96×96 mm
• Weight 0,4 Kg

Power Supply

• Power supply (24 ÷ 240) Volt AC/DC ± 10% 50/60 Hz without polarity respect, absorption 4 VA

Inputs

• Four analogical inputs, temperature control and mapping with PT100 sensor at three wires inside range from -10°C to +200°C

Outputs

• Four relays 250V AC, 10 A max (resistive load), free switch contact
• RS485 Half Duplex protocol MODBUS-RTU (MT 200 S)
• RS485 Half Duplex protocol MODBUS-RTU, 4-20 mA or 0-20 mA galvanically isolated (MT 200 C)
• ETHERNET communication port, protocol MODBUS – TCP (MT 200 E)

Characteristics

• Self-extinguishable NORYL Box
• Protection degree front panel in polycarbonate: IP65
  (IP66 on request)
• Protection degree of rear panel on terminal board side:
  IP20
• Display with light segments
• Visualisation of max temperature and the relevant
  channel in the automatic mode
• Alerts of pre-alarm, alarm, probes fault, fanning, manual
  function, historic highs
• System programming directly by frontal panel
• Possibility to select independently each channel
• Limit of alarm and pre-alarm settable in the range
  (-9°C ÷ 199°C)
• Precision ± 1% on full-scale ± 1 digit
• Cooling fan control on three or four channels
• Comparison of temperature for cooling fan between two
  different levels (L and H)
• Four selectable operating modes
• Detection of fault probes, maximum flexibility of
  managing and simplicity of programming, checking of
  validity of the insert data during programming phase
• Continuos storage of planned and reached values by
  each channel (limits and historic highs)
• Dielectric isolation: 2,5 KV AC for 60”
• Software configuration to control the environment
  temperature
• Resolution 1°C
• Working temperature of device from -20°C to 60°C
• Max allowed dampness in the room 90% not condensing
• Electrical connections with fast-polarised connectors
• Possibility of manual relays switch through menu test
  relays to simulate and check the reliability of contact
• Galvanically insulated output 4-20 mA or 0-20 mA
  (MT200 C)
• Maximum impedance allowed for current output
  500 Ohm
  Range 4-20 mA (-10°C 4 mA / +200°C 20 mA)
  Transformation formula (current in mA, temperature in
  °C): lout = (T+10)/210*16 + 4
  Range 0-20 mA (-10°C 0 mA / +200°C 20 mA)
  Transformation formula (current in mA, temper ature in
  °C): lout = (T+10)/210*20 (MT200 C)
• Certification for railway environment use according to
  EN-50121-5:2006 regulations (MT 200 EN50121-5)
• Configuration of IP address, port, subnet, gateway via
  browser web (MT200 E)
• Technical manual in five languages
  (and more on request)
• Construction in accordance with rule EN61000-6-2:2005 2014/30/EU
• Input filter for power supply in accordance with rules
• Tropicalization (optional)