System Uniplex I

• Expansion up to 150 heating circuits
• Local control panels with Uniplex cards and central operation, indication, and logging at the PC
• Temperature limiter independent from the controller according to EN 50019 + A4 and VDE 0631
• Suppression of the controller's output signal in case of limiter trip
• Constant temperature controlling (analogue output) or on-off control (relay output)
• Current adjustment according to full wave switching principle
• Current regulator in connection with external electronic Solid State Relay
• Supervision of temperature sensors: alarming in case of short circuit or break
• Indication of maximum and minimum temperature
• Low temperature alarm, blocked during start-up
• Supervision of load current on minimum and maximum (adjustable)
• Supervision of heating circuit during non-operation
• Storage of the alarm status in case of voltage loss
• Processing of additional external limiter alarm
• Limiter relay with 2 normally open contacts
• Alarming for each heating circuit
• Separate Tmin/Tmax relay
• Operating condition "Standby" selectable externally
• Input of all parameters by means of control keys
• Input of parameters locked by password
• Indication of all measured values, parameters, and alarms by double-line display, value and parameter names, and fault indicators in clear text
• Standard distance between control panel and operating terminal up to 800 m
• Indication of operating conditions and general alarms by LED
• Analogue output (4-20 mA) for actual temperature of the controller
• One heating circuit requires:
  • 2 Pt 100-sensors
  • 1 Uniplex I
  • Power start with electronic Solid State Relay, current transformer, and contactor
• In case of PC failure, the controller and limiter operate independently