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VJQ8 Pulse to Analog Converter
Brand: Yokogawa Electric CorporationThis plug-in type pulse to Analog converter receives contact pulse, voltage pulse, or current pulse from the field and converts the signal into isolated DC current or voltage signals.
Features- Output-2 can be selected from DC voltage signal, DC current signal communication function (RS-485), or alarm output (2 relay contacts)
- Various parameters such as input range can be set and modified using a PC (VJ77) or Handy Terminal (JHT200 and the like)
- A pulse integration function that converts integrated flow value (average pulse frequency) through specified sampling time into Analog signals is provided
Specifications
Accuracy
- ± 0.1 % of Span
Alarm
- 0 to 100 % of Input Range - Alarm Setting Range
Approvals & Certifications
- CAN/CSA C22.2 No. 61010-1
- CE EN 61326-1
- EMC
- KC
- UL 61010-1
Communication
- 2-Wire Half-Duplex
- Baud Rate: 1,200, 2,400, 4,800, 9,600 bit/sec
- Data Length: 7-bits, 8-bits
- LADDER Communication
- Modbus ASCII/RTU
- Non-Procedural
- PC-Link Communication Protocol
- PC-Link with Sum
- RS-485
- Start-Stop Synchronization
- Stop Bit: 1-bit, 2-bits
Current
- 12-50 mA - Permissible Input Current
Display
- 2 LEDs
- Front LED Lights at Alarm
Dissipation
- 3.3 W at 24 Vdc & 110 Vdc - Power Dissipation
- 4.1 W at 24 Vdc & 110 Vdc - Power Dissipation
- 6.2 VA at 100 Vac - Power Dissipation
- 7 VA at 100 Vac - Power Dissipation
- 8.1 VA at 200 Vac - Power Dissipation
- 9 VA at 200 Vac - Power Dissipation
Distance
- 3,937 feet (1,200 metres) - Max.
Electrical Connectors
- M3 Screw Terminal
- Plug-In Connector
Electrical Contacts
- Normally Open Contact Output (Contact ON at Excitation) 2-Points, COM Common
Electrical Rating
- 30 Vdc at 1 A - Contact Capacity
Enclosure, Body Material
- Polyphenylene Oxide
Filter
- 10 ms Approximately of Time Constant - Input Filter
Frequency
- 0 to 10 Hz - Input Frequency
- 0.1 to 100,000 Hz - Input Frequency
- Lowcut Point: 0.01 Hz to 100 % of Input Frequency
- On Setting: 100 Hz Less - Input Frequency
Humidity
- 5 to 90 % RH, Non-Condensing
Hysteresis
- 0 to 100 % of Input Range
- 3 % (Alarm-1/2)
Input
- -1 to 8 Vdc - Low Level (On Input)
- 2-50 Vdc - High Level (off Input) & Pulse Width
- 58 Vdc or Less - Max.
Input Signal
- 15 Vdc / 15 mA or more
- 2-Wire Typical ON/OFF Contact
- 3-Wire Typical Voltage Pulse (Transmitter Power Supply Available)
- Current Pulse (Transmitter Power Supply Available)
- Voltage Pulse
Insulation Resistance
- 100 MΩ / 500 Vdc between Input, Output-1, Output-2, Power Supply & Ground Mutually
Measurement Accuracy
- Within ± 20 % of the Range During Testing
Mounting
- DIN Rail
- VJ Mounting
- Wall Mounted
Output
- 0-100 mVdc
- 0-20 mA DC
- -10 to 10 Vdc
Output Format
- Relay Contact
Power Supply
- 100-240 Vac/dc (-15 %, 10 %) 50/60 Hz - Power Supply Rated & Input Voltage
- 12 Vdc ± 10 % (4-30 mA Output) - Transmitter Power Supply
- 15-30 Vdc (± 20 %) - Power Supply Rated & Input Voltage
- 24 Vdc ± 10 % (4-30 mA Output) - Transmitter Power Supply
Power Supply Effect
- ± 0.1 % or Less of Span for Power Supply Voltage Fluctuation of 85-264 Vac (47-63 Hz) / DC & 12-36 Vdc
Pulse Range
- 30 µs for less than 10 kHz of Input Frequency
Resistance
- 1 ohm or Less - Output Resistance
- 100 ohms or Less - Output Resistance
- 100 to 2,200 ohms - External Shunt Resistance
- 15 kΩ or more Current Pulse - Input Resistance
- 350 to 250,000 ohms - Permissible Load Resistance
- 500 kΩ or more - Output Resistance
Resolution
- 0.1 %, 4 Significant Digits
- 1 second
Response Time
- 100 ms + 2 Intervals of Input Pulse 63 % Response (10 to 90 %) when in F/V Conversion Mode
Span & Zero Adjustments
- ± 10 % of Span - Output Span Adjustment
- ± 5 % - Output Zero Adjustment
- ± 5 % of Span (Output-1 Signal, -10-10 Vdc) - Output Span Adjustment
Supply Voltage
- 1,000 Vac/minute between Input, Output-1 & Output-2 when Alarm Output - Withstand Voltage
- 12-36 Vdc
- 2,000 Vac/minute between Input, (Output-1, Output-2), Power Supply, & Ground Mutually - Withstand Voltage
- 85-264 Vac (47 to 63 Hz)/DC
Temperature Effect
- ± 0.2 % or Less of Span for a Temperature Change of 10° C (18° F)
Temperature Range
- 0° to 50° C (32° to 122° F)
Update Time
- 0.1 to 100 seconds - Sampling Time