UD350 Manual Setting Controllers

Green Series Manual Setting Controllers (1/8 DIN)
(When human interaction / attention is necessary)


  • 4 digit LED display
  • 2 °C ±1 digit for TC — 1°C ±1 digit for RTD
  • Standard retransmission output of measured value (PV)
  • Universal input for Thermocouple, RTD and DC mV/V signals
  • PV display disappeared function, when PV display is not necessary
  • Standard two alarm outputs
  • IP65 splash-proof and dust-proof designed front panel


  • Manually controlling your application
  • Control output of PLCs or Process controllers
  • Control output to speed devices for pumps etc.
  • Control output to actuated devices such as valves, hydraulic or pneumatic actuator rams etc.


The UD350 (1/4 DIN size) manual setting controllers are ideal for those processes that require human interaction / attention to provide the necessary control for your application. The UD350 is the optimal choice. It provides fine control and accurate repeatability by digitally scaling the 4-20 mADC output, via the front panel keys.
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The UD350 can also be used as a remote setter for digital indicating controllers, the disappeared function is used to shut down the PV display when it is not necessary. The two alarm outputs and a PV retransmission output are provided as standard functions for controlling your process. The front panel has a splash-proof and dust-proof design (IP65), which enables the use in the dusty environment.
  • Literature
  • Specifications
Literature and Technical Information
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Panel Instrumentation

++ UD350 | General specification sheet (225 kB)
++ UD350 | Manual 001 (610 kB)
++ UD350 | Manual 002 (618 kB)
++ UD350 | Brochure (1.1 MB)
Model: Yokogawa UD350 Manually setting controllers
PV/SP Data display: 4-digit PV / 4-digit SP
PV inputs: 1 universal input (TCs, RTDs, mV, V)
Setpoints: 2
Alarms: 2
Control scan period: 500ms
Control Outputs Select from Relay, Voltage Pulse or 4 to 20mA
2 relay for motorized valve control
PV Retransmission Output: 1 point (4 to 20mA)
Input: 1 point
Input type: Universal; (Thermocouple, RTD, Voltage, Current)
Allowable input voltage: ±10V DC for thermocouple or DC mV input
±20V DC for DC V input
Maximum RTD Ω input: 10Ω/wire (The resistance values of three wires must be the same.)
Maximum Thermocouple Ω input: 250Ω for thermocouple or DC mV input
2kΩ for DC V input
Input resistance 1MΩ or greater for thermocouple or DC mV input. Approx. 1MΩ for DC V input
Manual Setting (SP) Output
Output: 1 point
Output type: Current
Output signal: 4 to 20 mA Maximum load resistance: 600 Ω
Output accuracy: ±0.3% of span
Alarm outputs: 2 (Alarm or Timer outputs)
Relay contact capacity:
1A at 240V AC or 1A at 30V DC (with resistance load)
Front Protection: IP65
Power Supply: 24VAC/DC or 90 to 264V AC (±10%), 50/60Hz
Power Consumption: 8VA
General Approvals UL, CE, CSA
Operating Temperature: 0 to 50°C ( 40°C or less in close mounting side-by-side)
Relative Humidity: 20 to 90% RH (no condensation)
Storage Temperature: -25 to 70°C
Dimensions: 96(W)×96(H)×100(D) (mm)
Mounting: Direct panel mounting; mounting bracket, one each for upper and lower mounting
Weight: 0.4 kg