VJX7 Single & Dual Output Universal Computing Unit
Brand: Yokogawa Electric Corporation
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VJX7 Single & Dual Output Universal Computing Unit
Brand: Yokogawa Electric CorporationThis plug-in type universal computing unit receives DC current or DC voltage signals, applies various computing functions to them, and then converts them into isolated DC current or DC voltage signals.
Features- Output-2 can be selected from DC voltage signal, DC current signal, communication function (RS-485), or contact output (2 relay contacts)
- Various parameters such as input range and computation programs can be set and modified using a PC (VJ77) or Handy Terminal (JHT200 or the like)
Specifications
Accuracy
- (± 5.0 % of Set Value) ± 1 second - for VJX7-B, VJX7-C, VJX7-D, VJX7-E, VJX7-H
- (± 5.0 % of Set Value) ± 1 %/minute - for VJX7-F
- ± 0.1 % of Span
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
- EIA RS-485
- LADDER Communication Protocol
- Modbus ASCII/RTU Communication Protocol
- PC-Link Communication Protocol
- PC-Link with Sum Communication Protocol
- Stop Bit: 1-bit, 2-bits
Dead Time
- 10 seconds - for VJX7-C
Dissipation
- 2.5 W at 24 Vdc - Power Dissipation
- 2.6 W at 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 Rating
- 30 Vdc at 1 A - Contact Capacity
Enclosure, Body Material
- Modified Polyphenylene Oxide
Function
- Dead Time Computation
- First Order Lag Computation
- First Order Lead Computation
- Free Program
- Limiter
- Linearizer
- Moving Average Computation
- Ratio Setting
- Uniform-Speed Response (Velocity Limiter)
- Velocity Computation
Humidity
- 5 to 90 % RH, Non-Condensing
Input
- 0-50 mA DC, Span is 5 mA or more
- -1 to 1 V (L Range), Span is Under 0.5 V
- -10-10 V (H Range), Span is Under 5 V
- -10-10 Vdc, Span is 0.1 V or more
- -5 to 5 V (H Range), Span is Under 2.5 V
Insulation Resistance
- 100 MΩ at 500 Vdc between Input, Output-1, Output-2, Power Supply & Ground Mutually
Mounting
- Compact Plug-In Typical - Construction
- Dedicated VJ Mounting Base
- DIN Rail Mounting
- Wall Mounted
Output
- 0-100 mVdc
- 0-20 mA DC
- -10 to 10 Vdc
Output Format
- 2 Relay Contact
Power Supply
- 100-240 Vac/dc (-15 %, 10 %) 50/60 Hz - Power Supply Rated & Input Voltage
- 15-30 Vdc (± 20 %) - Power Supply Rated & Input Voltage
Power Supply Effect
- ± 0.1 % or Less of Span - Effect of Power Supply Voltage Fluctuation
Resistance
- 1 MΩ - DC Voltage Signal Input Resistance (100 kΩ when Power Off)
- 1 ohm or Less - Output Resistance for Voltage
- 100 ohms - DC Current Signal Input Resistance (with External Shunt Resistor)
- 2 kΩ or more - Output-1 & Output-2 Permissible Load Resistance
- 350 ohms or Less - Output-2 Permissible Load Resistance
- 500 kΩ or more - Output Resistance for Current
- 750 ohms or Less - Output-1 Permissible Load Resistance
Response Time
- 500 ms, 63 % Response (10 to 90 % Change of Range)
Supply Voltage
- 1,000 Vac/minute - Withstand Voltage between Input & Output-2 & between Output-1 & Output-2
- 2,000 Vac/minute - Withstand Voltage between Input, (Output-1, Output-2), Power Supply, & Ground Mutually
Temperature Effect
- ± 0.2 % of Span or Less for a Temperature Change of 10° C (18° F) - Effect of Ambient Temperature Change
Temperature Range
- 0° to 50° C (32° to 122° F)
Time Constant
- 0 to 799 seconds - Setting Range of Time Constant for VJX7-B, VJX7-C, VJX7-D, VJX7-E, VJX7-H
