The Yokogawa UT150-RN/RS is a robust alarm trip module designed for 100V AC powered systems and featuring a critical remote reset capability. It combines the reliable process monitoring and latching alarm functions of the UT150 series with the flexibility of being reset from a distant location, making it ideal for distributed control systems and unmanned facilities. The key differences from the UT150-VN/AL/RES are its power supply requirement and the enhanced remote reset functionality.<br />
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Technical Parameters / Specifications
Category Parameter Specification
General Model UT150-RN/RS
Type Single-channel Alarm Trip Module with Remote Reset
Mounting DIN rail mount inside a Yokogawa UTSX Series housing
Input Signal 4 to 20 mA DC
Input Resistance Approx. 51 Ω
Burn-out Detection Up-scale (HI) or Down-scale (LO) selection via DIP switch
Output Type 2 independent SPDT Electro-mechanical Relays
Contact Rating 2 A @ 250 V AC / 30 V DC (Resistive load)
Default State Energized (Normal) / De-energized (Alarm) - configurable
Alarm Function Setpoints 2 (AL1 and AL2). Each can be set individually.
Setpoint Range Approximately 0 to 105% of span (4-20 mA)
Setting Accuracy ±0.5% of span (at 25°C)
Reset Function Local (front button) and Remote (dry contact signal)
Power Supply Voltage 100 V AC (50/60 Hz)
Consumption Approx. 4.5 VA (at 100 V AC)
Remote Reset Signal Dry contact input (momentary short circuit across remote reset terminals)
Contact Rating 24 V DC, 10 mA
Performance Response Time < 200 ms
Isolation 1500 V AC between Input-Output 1-Output 2-Power
Environment Operating Temperature -20°C to +60°C
Storage Temperature -40°C to +80°C
Humidity 10 to 90% RH (non-condensing)