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VJU7 Universal Temperature Converter
Brand: Yokogawa Electric CorporationThis plug-in type universal temperature converter converts input signal (thermocouple, RTD or mV signal) into isolated DC voltage signal or DC current signal.
Features- Universal Input Enables Selection of Input Type (Thermocouple, RTD, mV Signal) and of Measuring Ranges within Specifications
- DC Voltage Signal, DC Current Signal, Communication Output (RS-485), or Alarm Output (2 Relay Contacts) is Selectable as Output-2
- Change of Input Types / Input Ranges/Burnout Action, and I/O Monitoring etc. Can be Done Through Handy Terminal (JHT200 etc)
- For the Fahrenheit Display, Specify the Option “/DF”
Specifications
Accuracy
- ± 0.1 % of Span
- ± 1° C (± 1.8° F) (Except for Typical R, S) for Terminal Temperature 25° ± 15° C (77° ± 27° F) - Reference Junction Compensation Accuracy
- ± 2° C (± 3.6° F) (Typical R, S) for Terminal Temperature 25° ± 15° C (77° ± 27° F) - Reference Junction Compensation Accuracy
Alarm
- 0 to 100 % of Input Range - Alarm Setting Ranges
- High/Low Limit Alarm - Alarm Operating Direction
Approvals & Certifications
- CAN/CSA C22.2 No. 61010-1
- CE EN 61326-1
- EMC
- KC
- UL 61010-1
Burn-Out
- Within 60 seconds - Burn-Out Time
Communication
- 2-Wire Half-Duplex (Start-Stop Synchronization, Non-procedural)
- Baud Rate: 1,200, 2,400, 4,800, 9,600 bit/sec
- Data Length: 7-bits, 8-bits
- EIA RS-485
- LADDER Communication
- Modbus ASCII/RTU
- PC-Link Communication Protocol
- PC-Link with Sum
- Stop Bit: 1-bit, 2-bits
Current
- About 0.5 mA - RTD Detective Current
Display
- Front LED Lights at Excitation, 2 LEDs - Alarm Operation Display
Dissipation
- 2.6 W at 24 Vdc & 110 Vdc - Power Dissipation
- 5 VA at 100 Vac - Power Dissipation
- 6.7 VA at 200 Vac - Power Dissipation
Distance
- 3,937 feet (1,200 metres) - Max.
Electrical Connectors
- M3 Screw Terminal
Electrical Contacts
- Normally Closed - Output 2
- Normally Open Contact Output (Contact ON at Excitation) 2-Points, COM Common - Output Signal
Electrical Rating
- 1 A at 30 Vdc - Contact Capacity
Enclosure, Body Material
- Modified Polyphenylene Oxide
Humidity
- 5 to 90 % Relative Humidity, Non-Condensing
Hysteresis
- 3 % (Alarm-1/2)
Input
- -10 to 100 mV (M Range) Span is Under 27.5 mV - Thermocouple Input
- -2.5 to 25 mV (L Range), Span is Under 10 mV - Thermocouple Input
Input Signal
- mV Signal
- RTD
- Thermocouples
Insulation Resistance
- 100 megaohms / 500 Vdc between Input, Output-1, Output-2, Power Supply & Ground Mutually
Measurement Accuracy
- Within ± 20 % of the Range During Testing
Measuring Span
- 10° C (50° F) or more (RTD)
- 3 mV or more (Thermocouple, mV Signal)
Mounting
- Base Mounting (VJCE) - VJ Mounting
- Compact Plug-In Typical - Construction
- DIN Rail Mounting
- Wall Mounted
Output
- 0 to 100 mVdc
- 0-20 mA DC
- -10-10 Vdc
- 1-5 Vdc
- 4-20 mA DC
Output Format
- Alarm Output (2 Relay Contacts)
- Relay Contact - Signal Typical for Alarm Output
Power Supply
- 100-240 Vac/dc (-15 %, 10 %) 50/60 Hz - Power Supply Input & Rated Voltage
- 15-30 Vdc (± 20 %) - Power Supply Input & Rated Voltage
Power Supply Effect
- ± 0.1 % or Less of Span for 15-30 Vdc (± 20 %), 100-240 Vac/dc - Effect of Power Supply Voltage Fluctuation
Relay Output
- 2 Relay Contacts
Resistance
- ± 0.2° C (± 0.36° F) or Less of Span for Change of 10 ohms / Wire (RTD) - Effect of Wiring Resistance Change
- ± 15 μV or Less of Span for Change of 100 ohms (Thermocouple) - Effect of Wiring Resistance Change
- 0 to 176 ohms (M Range), Span is Under 38.6 ohms - RTD Input
- 0 to 520 ohms (H Range), Span is Under 130 ohms - RTD Input
- 1 Megaohm (When Power On) - Input Resistance for Thermocouple, mV Input
- 1 ohm or Less - Output Resistance for 1-5 Vdc
- 2 kiloohms or more - Permissible Load Resistance for Output
- 350 ohms or Less for 4-20 mA DC - Permissible Load Resistance for Output 2
- 4 kiloohms (When Power Off) - Input Resistance for Thermocouple, mV Input
- 500 kiloohms or more - Output Resistance for 4-20 mA DC
- 500 ohms or Less for Thermocouple, mV Signal - Input External Resistance
- 750 ohms or Less for 4-20 mA DC - Permissible Load Resistance for Output 1
Resolution
- 0.1 %, 4 Significant Digits - Setting Resolution
- 0.1° C - Setting Resolution
- 1 second - Setting Resolution
Response Time
- 200 milliseconds, 63 % Response (10 to 90 %)
- 350 milliseconds (Input Change 10 to 90 %, Alarm Setting Point 50 %) - Alarm Output
RTD Type
- JPt100 (JIS’89)
- Pt100 (ITS-90) & (IPTS-68)
- Pt50 (JIS’81)
Sensor, Probe Type
- B Thermocouple
- E Thermocouple
- J Thermocouple
- K Thermocouple
- N Thermocouple
- RTD
- R Thermocouple
- S Thermocouple
- T Thermocouple
- W3 Thermocouple
- W5 Thermocouple
Supply Voltage
- ± 4 Vdc or Less - Permissible Applicable Voltage
- 1,000 Vac/minute between Input, Output-1 & Output-1, Output-2 at Alarm Output - Withstand Voltage
- 2,000 Vac/minute between Input, Output-1, Output-2, Power Supply & Ground Mutually - Withstand Voltage
Temperature Effect
- ± 0.2 % or Less of Span for a Temperature Change of 10° C (18° F) - Effect of Ambient Temperature Change
Temperature Range
- 0° to 50° C (32° to 122° F)
- -200° to 2,000° C (-328° to 3,632° F) - for RTD & Thermocouple Sensor Typicals