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VJP8 Pulse Rate Converter
Brand: Yokogawa Electric CorporationThe VJP8 is a plug-in pulse rate converter that receives contact, voltage or current pulse from a field, and converts it into isolated transistor-contact pulse or contactless AC switch pulse at a preset pulse rate.
The VJP8 can also be used as a pulse signal repeater by setting the pulse rate and pulse width type.
Features- Either Pulse Output or Communication Function (RS-485) is Selectable as Output-2
- Various Parameters Such As Pulse Rate Can be Set and Modified Through a PC (VJ77) or Handy Terminal (JHT200 and the Like)
Specifications
Accuracy
- ± 0.1 % of Span
- ± 10 % - Pulse Width Time Accuracy
- ± 20 % - for 15-30 Vdc
Approvals & Certifications
- CE Marking EN 61326-1
- EMC
- KC Marking
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
- PC-Link Communication Protocol
- PC-Link with Sum Communication Protocol
- Stop Bit: 1-bit, 2-bits
Current
- 50 mA - Max.
Dissipation
- 100 Vac 6.5 VA
- 110 Vdc 3.7 W
- 200 Vac 8.6 VA
- 24 Vdc 3.7 W
Distance
- 3,937 feet (1,200 metres) - Max.
Electrical Connectors
- M3 Screw Terminal
Enclosure, Body Material
- Modified Polyphenylene Oxide
Frequency
- 0 to 1 kHz - Contactless AC Switch Output Frequency
- 0 to 100 kHz - Open Collector Output Frequency
- 10 kHz - Input Frequency
Humidity
- 5 to 90 % Relative Humidity Non-Condensing
Input
- -1 to 8 Vdc - Low Level (On Input)
- 10-50 mA DC - High Level (off Input) & Pulse Width
- 15-30 Vdc (± 20 %) - Power Supply Input Voltage
- 2-50 Vdc - High Level (off Input) & Pulse Width
- 2-Wire Typical
- 3-Wire Typical
- -5 to 40 mA DC - Low Level (On Input)
- 58 Vdc or Less - Max.
Insulation Resistance
- 100 megaohms at 500 Vdc between Input, Output-1, Output-2, Power Supply & Ground Mutually
Load
- Maximum
Measuring Time
- 12.5 / 30 / 50 / 100 milliseconds - Pulse Width Time
- 12.5 / 50 / 100 µs - Pulse Width Time
Mounting
- Dedicated VJ Mounting Base - Only when Output-2 is Analog Output
- DIN Rail
- Wall Mounted
Output Format
- Contactless AC Switch
- Open Collector
Power Supply
- 100-240 Vac/dc, 50/60 Hz - Power Supply Rated Voltage
- 12 Vdc ± 10 % - Transmitter Power Supply (For 4-30 mA Output)
- 15 Vdc / 15 mA - Power Supply for Contact Input Signal
- 15-30 Vdc - Power Supply Rated Voltage
- 24 Vdc ± 10 % - Transmitter Power Supply (For 4-30 mA Output)
Pulse Range
- 0.0001 to 2.0000 (Settable to Four Decimal Places) - Pulse Rate Setting Range
Resistance
- 100 kiloohms - Contact Resistance (OFF Input)
- 15 kiloohms or more - Contact Pulse or Voltage Pulse (Input Resistance)
- 200 ohms - Current Pulse (Input Resistance) with External Shunt Resistor Option
- 200 ohms or Less - Contact Resistance (ON Input)
Supply Voltage
- 1,000 Vac Per Minute - Withstand Voltage between Output-1 & Output-2
- 2,000 Vac Per Minute - Withstand Voltage between Input, (Output-1, Output-2), Power Supply, & Ground Mutually
Temperature Effect
- No Wrong Operation for a Temperature Change of 10° C (18° F) - Effect of Ambient Temperature Change
Temperature Range
- 0° to 50° C (32° to 120° F)
Update Time
- Approximately 10 milliseconds - Input Filter Time Contact
