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Home | Products | Signal Transmitters & Conditioners | 3 & 4 Wire Transmitters | DC to Frequency | TWI-FO / TWN-FO

TWI-FO / TWN-FO – DC to Frequency Transmitters

TWI-FO: Isolating DC to Frequency Interface
TWN-FO: Non-isolating DC to Frequency Interface

Intech TWI-FO / TWN-FO DC To Frequency Transmitter

TWI-FO / TWN-FO Features

  • PLC interface
  • Converts 4~20mA signal into a frequency for direct conversion into a digital input
  • Isolated input to output 1.6kV for TWI-FO
  • High accuracy
  • LED indication of frequency output
  • Easy to install
  • Compact DIN rail mount enclosure
  • Reverse polarity protection
  • Externally accessible span and zero adjustments
Brand: INTECH
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Description

The TWI-FO and TWN-FO are designed as a low cost alternative to expensive A/D cards on PLC’s, computers and data acquisition systems.
The TWI-FO and TWN-FO convert and analogue signal into a linear, frequency output signal, with a 50:50 mark space ratio. Ideally designed to be used with a PLC to convert a 4~20mA signal into a 10~1010Hz frequency, (Other calibrations available) allowing direct connection into a digital input on a PLC (Use with interrupts) and powered by the PLC’s 24Vdc power supply.

Note: The conversion from TWN-FO to TWI-FO is easily achieved by the removal of two internal links.

TYPETWI-FO
InputCurrentStandard: 4~20mA
Input Resistance = 25Ω
Options: 0~5mA, 1~5mA, 0~10mA, 2~10mA, 0~20mA, 0~50mA, 10~50mA
VoltageOptions: 0~5V, 1~5V, 0~10V, 2~10V
Min Input Resistance = 200kΩ
Other inputs available on request
Output RangesStandard10~1010Hz
Options, J1=00~3.9Hz, 0~7.8Hz, 0~15.6Hz, 0~31.3Hz, 0~62.5Hz, 0~125Hz, 0~250Hz, 0~500Hz, 0~1kHz, 0~2kHz, 0~4kHz, 0~8kHz
Options, J1=C0~3.13Hz, 0~6.25Hz, 0~12.5Hz, 0~25Hz, 0~50Hz, 0~100Hz, 0~200Hz, 0~400Hz, 0~800Hz, 0~1.6kHz, 0~3.2kHz, 0~6.4kHz
Other outputs available on request, with or without offsets
FunctionSquarewave Output; 50:50 Mark / Space Ratio
Amplitude(Power Supply 2) - 2V (No Load)
LoadLimited to Sink / Source 100mA @ 24Vdc (50mA @ 12Vdc)
Maximum load = 100mA @ 24Vdc
Suitable for most optocoupler inputs
Other variations available on request
Power Supply (1 & 2)11~28Vdc
Current UsageTWI-FOP/S1 = 20mA, P/S2 = 20mA
TWN-FO40mA
Supply Voltage Sensitivity<±0.001%/V FSO
Accurate to<±0.1% FSO Typical
Linearity & Repeatability<±0.1% FSO Typical
Ambient Drift<±0.02%/C FSO Typical
Noise Immunity125dB CMRR Average (1600Vdc Limit) - TWI-FO Only
EMC CompliancesEmissions EN 55022-A, Immunity EN 50082-1, <1% Effect FSO Typical
Isolation Test Voltage - TWI-FO OnlyInput to Output 1600Vdc for 1min
Response Time200msec Typical (10 to 90% 50msec Typical)
Operating Temperature0°C~70°C
Storage Temperature-20°C~80°C
Operating Humidity5~85%RH Max, Non-Condensing
Dimensions and ConstructionL=79, W=22.5, H=85mm, Polyamide Thermoplastic Rail Mount Enclosure

Product Range

Product Range:
CodeSpecificationsPriceQuantity
TWN-FO

Input 4~20mA; Output 10~1010Hz, Non Isolating Transmitter

 $355.00
TWI-FO

Input 4~20mA; Output 10~1010Hz, Isolating Transmitter

 $330.00
All prices are in NZ$, and GST exclusive and are subject to change without notice.

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Intech Christchurch

59 Mandeville Street
Riccarton, Christchurch 8011

Phone: (03) 343 0646

Email: sales@intech.co.nz

Intech Auckland

70 Central Park Drive
Henderson, Auckland 0610

Phone: (09) 827 1930

Email: aucksales@intech.co.nz

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