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MVTK Digital Limit Alarm
Brand: Yokogawa Electric CorporationThis plug-in type Digital Limit Alarm for thermocouple input receives thermocouple signal.
It is equipped with Active color PV display (PV display color changing function).
Features- Either 2 Points of Alarms (Relay Transfer Contact [1a1b], 2 Points) or 4 Points of Alarms (Relay NO Contact, 4 Points) can be selected
- An alarm status in the event of an alarm can be recognized
- Equipped with easy-to-see large LED Display as standard
- Using the economical mode enables the low power consumption operation (Normal Operation: approximately 0.5 W, 1 VA)
- Input range and each parameter setting can be changed by the operation keys on the front panel
- Can be Equipped with Monitor Output (1-5 Vdc, 4-20 mA DC or RS-485 Communication)
Specifications
Accuracy
- ± 0.1 % ± 1-Digit of Instrument Input Range Span - Input Display & Alarm Action Point Setting Accuracy
- ± 0.1 % of Output Span
- ± 1° C (± 1.8° F) at 25° C (77° F) ± 15° C (27° F) - Reference Junction Compensation (Thermocouple Typical K, E, J, T, B, N, W3, W5)
- ± 2° C (± 3.6° F) at 25° C (77° F) ± 15° C (27° F) - Reference Junction Compensation (Thermocouple Typical R, S)
Adjustment Type
- Factory Set (Pre-Set)
Burn-Out
- Burn-Out Time: 60 seconds or Less
- Downscale
- Off
- Upscale
Communication
- Baud Rate: 1,200, 2,400, 4,800 or 9,600 bit/sec
- Data Length: 7-bits, 8-bits
- LADDER Communication
- Modbus ASCII/RTU
- PC-Link Communication Protocol
- PC-Link with Sum
- RS-485 Modbus Communication Protocol
- Stop Bit: 1-bit, 2-bits
Consumption
- 0.5 W, 1 VA Approximately - Normal Operation Using the Economical Mode
- 2.5 W at 110 Vdc - Power Consumption
- 2.7 W at 24 Vdc - Power Consumption
- 4.2 VA at 100 Vac - Power Consumption
- 5.4 VA at 200 Vac - Power Consumption
Display
- 0.35” (9 mm) Character Height - Data Display
- 0.53” (13.5 mm) Character Height - PV (Measured Value) Display
- 4-Digit
- 7-Segment
- LED Display: Green (Data Display) & Red/Green (PV)
Distance
- 1,200 metres - Max.
Electrical Connectors
- M3.5 Screw Terminal for Input/Output & Power Supply
Electrical Rating
- 0.1 A at 120 Vdc - Resistive Load
- 0.5 A at 220 Vac - Resistive Load
- 1 A at 120 Vac
- 1 A at 30 Vdc
Enclosure, Body Material
- ABS Resin (Black) UL 94 V-0
Humidity
- 5 to 90 % Relative Humidity, Non-Condensing - Operating Humidity Range
Indication
- Alarm Status LEDs (2 or 4 Orange LEDs)
Input
- ± 4 Vdc - Max.
Insulation Resistance
- 100 megaohms at 500 Vdc between Inputs, Alarm Outputs, Power Supply & Monitor Output Mutually
Materials of Construction
- Glass Fiber (Black), UL 94 V-1 - Socket
- Modified Polyphenylene Oxide Resin - Socket
Mounting
- DIN Rail Mounting
- Plug-In Typical - Construction
- Wall Mounted
Operating Temperature
- 0° to 50° C (32° to 122° F)
Output
- 1-5 Vdc
- 4-20 mA DC - Analog Output
Output Format
- Relay Output
Power Supply Effect
- ± 0.1 % of Span or Less for the Fluctuations within the Allowable Range - Effect of Power Supply Fluctuation
Relay Operation
- Energized or De-Energized Under Normal Condition - High-Low Limit Alarm (PV, Deviation)
Resistance
- ± 15 µV or Less for a Change of 100 ohms - Effect of Leadwire Resistance Change
- 1 Megaohm (During Power On) - Input Resistance
- 2 kiloohms or more - Allowable Load Resistance (For 1-5 Vdc)
- 350 ohms or Less - Allowable Load Resistance (For 4-20 mA DC)
- 4 kiloohms (During Power Off) - Input Resistance
- 500 ohms or Less - Allowable Leadwire Resistance
Resolution
- 1 second - Setting Resolution
- 1-Digit - Setting Resolution
Response Time
- 500 milliseconds
Sensor, Probe Type
- B Thermocouple (RH, ITS-90)
- E Thermocouple (CRC, ITS-90)
- J Thermocouple (IC, ITS-90)
- K Thermocouple (CA, ITS-90)
- N Thermocouple (ITS-90)
- R Thermocouple (ITS-90)
- S Thermocouple (ITS-90)
- T Thermocouple (CC, ITS-90)
- W3 Thermocouple (ASTM E988)
- W5 Thermocouple (ASTM E988)
Supply Voltage
- 1,000 Vac/minute between (Alarm Outputs 1 & 4) & (Alarm Outputs 2 & 3) & between Inputs & Monitor Output - Withstand Voltage
- 100-240 Vac/dc (-15 %, +10 %), 50/60 Hz
- 2,000 Vac/minute between Inputs (Alarm Outputs 1, 2, 3, 4), Monitor Output & Power Supply Mutually - Withstand Voltage
- 24 Vdc ± 10 %
Temperature Effect
- ± 0.2 % of Span or Less for a Temperature Change of 10° C (18° F) - Effect of Ambient Temperature Change
Temperature Range
- -200° to 2,270° C (-328° to 4,118° F)
