Entrance areas:

Setting the input signal in the software, keypad or app.
Thermocouple type K,S,R,J,T; reference junction: internal (from -25 °C to 85 °C)
Temperature sensors: Pt100, Pt500, Pt1000, Ni100, PTC1K, NTC 10K (β 3435K and β3694K), NTC 2252 (β3976K)
Linear inputs: 0 V to 10 V, 0/4 mA to 20 mA, 0 mV to 60 mV
Potentiometer: 1 to 150 kOhm

Impedance:

0 to 10 V:_Ri > 110 KOhm
0 to 20 mA:_Ri < 5 Ohm
0 to 60 mV:_{Ri >} 1 MOhm

Accuracy:

at 25 °C 0.2%± 1 digit for thermocouples and resistance thermometers V and mA.

Reference junction accuracy 0.1 °C/°C

Display:

3-digit white LED display with 14.2 mm digit height

Keyboard:

4 buttons for programming and setting the setpoint.

Indicators:

Three orange indicators for control outputs, alarm statuses, serial communication and tuning.
C: ON when control output is active.
A1: ON when an alarm is present.
R: ON when the controller is communicating via the serial interface. (UR3274S6 and UR3274S7 only)

Measurement cycle:

programmable up to 2.1 msec (470 Hz),

Cycle time:

Internal cycle time is 100 ms (cannot be changed).

Relay output:

UR3274S4 and UR3274S5: 1 x changeover relay with 5 A at 250 VAC,
1 x NO contact with 5 A at 250 VAC
UR3274S6 and UR32374S7: 1 x changeover relay with 5 A at 250 VAC,
Programmable as control output for heating/cooling or alarm.

SSR output:

Digital NPN output/ SSR output: 12 VDC at max. 25 mA
Attention: Ground/minus output is switched.
Programmable as control output for heating/cooling or alarm.

Power supply:

UR3274S4 and UR3274S6: 12 to 24 VAC/VDC, ±10 %, 50/60 Hz, 4.5 Watt/VA
UR3274S5 and UR3274S7: 24 to 230 VAC/VDC, ±15 %, 50/60 Hz, 5 Watt/VA

Ambient conditions:

Operating temperature: 0 °C to +45 °C;
Relative humidity 35 % to 95 % rH, non-condensing
Max. Altitude: 2000m

Programming:

Programming and operation is menu-guided via the front buttons. Programming for Android smartphones is also possible via the Wachendorff EMG APP (via NFC/RFiD). For programming via APP, the UR3274SX controller can also be in a de-energized state. The Wachendorff EMG app is currently only suitable for Android operating systems. A Wachendorff EMG app that supports iOs operating systems will follow soon.
Another programming option is to use the “Wachendorff EMG DESKTOP” PC software via USB (2.0A to Micro-USB cable).
You can save configurations to the optional USB memory card (SFUR0USB) and then transfer them to other devices.

NFC/RFiD:

When scanned by a reader that supports the NFC-V protocol, the device is to be regarded as a VICC (Vicinity Inductively Coupled Card) in accordance with the ISO/IEC 15693 standard. The controller operates at a frequency of 13.56 MHz. The device itself does not emit any radio waves.

Notes on programming via app:

The position of the controller's NFC sensor is located at the top left above the up arrow button.
Protective covers for smartphones can interfere with the connection and should therefore be removed from the smartphone for the programming period.

Functionality:

The controller has a control output for two-point control (with hysteresis) or three-point control with P, PI, PD and PID behavior. The output is time-proportional. Cycle control for a control valve can also be programmed.

Alarm operating modes:

They switch when the temperature exceeds or falls below the limit or in the event of a deviation; band alarm; limit value or continuous signal switching. Standby and hysteresis are programmable. In the event of sensor breakage: various options can be set.

Interface:

UR3274S4 and UR3274S5:
1x Micro-USB

UR3274S6 and UR3274S7:
1x Mirco-USB
1x RS485 interface (Modbus RTU slave)

Data protection:

Password-protected access to setpoint, alarm values and parameters.
NFC/RFiD sensor can be switched off.

Housing:

Black, impact-resistant plastic housing
Housing: PC UL94V2 self-extinguishing
Front panel: PC UL94V2

Protection class:

IP65 front panel (with seal)
IP20 housing and terminal strips

Weight:

approx. 120g

Certificates & approvals:

CE

Dimensions (WxHxD):

77 mm x 35 mm (front panel) x 53 mm
Panel cut-out: 28.5 x 70.5 mm
Thickness of the front panel: 9 mm
Mounting via mounting frame with plastic clamping bracket.

Scope of delivery:

Device, mounting material, seal, installation instructions

Certificates:

CE, RoHS

Customs tariff number:

8542 31 90

Manufacturer:

Wachendorff Prozesstechnik GmbH & Co. KG