Friday, 10 June 2011 18:21 Last Updated on Monday, 22 August 2011 01:30 Written by Administrator

FDT5600 SERIES FIELD MOUNT TRANSMITTERS AC INPUT

FDT5600: AC Input, Average Responding 
FDT5610: AC Input with True RMS Response

  • NEMA 4X Splashproof Enclosure 
  • 3-1/2 Digit Display 
  • Inputs from 50mV to 250Vrms, 1mA to 5 Amps 
  • True-RMS Response Option Available 
  • Expanded Input Ranges Available 
  • Urethane-Coated Circuit Boards 
  • AC or DC Power Options

FDT5600/FDT5610
PDF
DATA SHEET

Model FDT5600 and FDT5610 AC Input Transmitters provide an isolated DC output proportional to an AC voltage or current input. Input/output isolation is standard to guard against shock hazards in power measurements and against ground loop errors. Inputs ranges may be zero based or may be expanded (for example, 50-150Vac).

A rugged NEMA 4X splashproof, corrosion-resistant housing protects the transmitter in outdoor and industrial environments. The circuit boards are urethane coated for protection against condensation and contaminants. FDT5600 Series transmitters include a 3-1/2 digit user-rangeable display to provide local process indication in engineering units.

Model FDT5600 is average responding, calibrated to provide accurate RMS readings with sine wave inputs. Accuracy is better than 0.5% of span, but will be degraded with nonsinusoidal waveforms such as from SCR/Triac speed and power controllers or pulse-modulated motor drives. For accurate readings with nonsinusoidal waveforms use true-RMS responding Model FT5610.

Available options include AC and DC power choices and reverse-acting transmitter (decreasing output with increasing input).

For field mount transmitters without a display, select any plug-in transmitter module plus our ENCL-1 NEMA-4X enclosure. (see Accessories page)

ORDERING INFORMATION

Model Number: 

Specify Model FDT5600 for standard (average responding) or FDT5610 for true-RMS response.

Display: 

Specify display reading at low end and at full scale, including decimal point if required. See "Display Capabilities" specification, below. Note that reverse-acting display is possible - full scale reading downscale from low end. Display may be re-ranged by user.

Power: 

Add suffix A (for example, FDT5600A) for AC power, D for DC power. Specify 115Vac, 230Vac, 12Vdc or 24Vdc.

Input Range: 

Specify any AC voltage or current range allowed by the "Input Capabilities" spec, below.

Output Range: 

Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.

Reverse-Acting Transmitter (decreasing output with increasing input): 

Change last digit of the model number to 1 (for example, FDT5601A).

Loop-Powered Output: 

4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Change last digit of the model number to 2 (for example, FDT5602A).

Urethane Coating: 

Specify Option U.

Conduit Connection: 

Standard: None. The enclosure has knockouts. Option NPT: Single 1/2 inch NPT fitting (glass-fiber reinforced nylon) at the bottom of the housing.

ELECTRICAL CONNECTIONS

Connections are made to 8 terminals within the enclosure:

1: AC signal input. 
2: AC signal input. 
3: No connection. 
4: No connection. 
5: Output plus. 
6: Output minus. 
7: Power (AC or, if DC power option, DC plus). 
8: Power (AC or, if DC power option, DC minus).

TRUE-RMS OPTION

Model FDT5600 uses average-responding AC/DC converter circuitry calibrated for RMS sine wave response. Pure AC power and other sine wave inputs will be highly accurate. Nonsinusoidal waveforms, however, such as from SCR/Triac power controllers or variable speed drives (pulsed), will produce appreciable errors.

True-rms response, Model FDT5610, gives correct readings regardless of the waveform's shape.

DETAILED SPECIFICATIONS

Voltage Input Capabilities: 

 50mV rms minimum span, 250V maximum input (to 600V rms on special order). Offset ranges are allowed. (Input Impedance: 200kohms or greater.)

Current Input Capabilities: 

1mA rms minimum span, 5 Amps maximum input. Offset ranges are allowed. (Input voltage drop typically 0.1V at full scale. For exact specification for your range, contact factory.)

Input Frequency: 

40 Hz to 1kHz for specified accuracy.

Voltage Output Capabilities: 

1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1Kohm at 10V output).

Current Output Capabilities: 

1mA minimum output span, 0 to +25mA absolute limit. Positive offsets are allowed, negative outputs are not. Output drive capability, 24V (1,200 ohms max. at 20mA output).

Display Capabilities: 

Low end and full scale readings may be anywhere between -1999 and +1999 counts. A fixed decimal point may be added in any position. Minimum span (full scale minus low end) is 10 counts. Reverse-acting display is possible (full scale reading downscale from low end). Display may be re-ranged by user.

Accuracy (factory calibration): 

+/-0.5% of span or better.

Adjustability: 

Zero and span each are adjustable approx. +/-15% of span.

Response Time: 

Under 200 milliseconds.

Isolation: 

3-way (Power/Input/Output) 1,500Vac rms (2,100V peak).

Guaranteed Operating Temperature: 

-10 to +60˚C (14 to 140˚F).

Temperature Stability: 

+/-0.02% per ˚C, or better.

Power Requirements: 

AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.