Your Source for Process Measurement & Control
DRF-FR Freqency Input Signal Conditioner
- NPN, PNP, NAMUR, Voltage Pulse, Voltage AC (up to 200 Vac)
- Frequency Signals from 10 Hz up to 50 KHz
- Accuracy 0.2%
- Excitation Voltage 15 Vdc (20 mA) or 9V2 for NAMUR
- Galvanic Isolation between Input, Output and Power
- Part of a Comprehensive Family of Signal Conditioners
Description The DRF series DIN rail signal conditioners aredesigned to accept a broad range of input signals,such as ac and dc voltage and current, frequency,temperature (thermocouple and RTD), and processtransducers, and provide standard process outputsof either 4 to 20 mA, or 0 to 10 Vdc. The DRF seriesfeature a modern housing design, that is easilymounted on standard 35 mm DIN rails. Connectionsare safely and securely made through pluggablescrew terminal connectors, with input and outputconnections on the opposite sides of the module.
The DRF-FR signal conditioneraccepts a frequency input andprovides an isolated 0 to 10 Vdcor 4 to 20 mA output. Models areavailable with three differentpower options, 24 Vdc, 120 Vacand 240 Vac.
The DRF-FR are ideally suited forindustrial applications. All modelsmount on a standard 35mm DINrail and provide galvanic isolationbetween input, output and powerup to 3500 Veff .Module response time is 250 msor less.
Adjustable Input Ranges
The front door of the housing provides easy accessspan and offset potentiometers which may be usedfield adjust the input and output signal range. The ranges shown in the Range Tablebelow are supported.
|20HZ||0 to 20 Hz|
|40HZ||0 to 40 Hz|
|60HZ||0 to 60 Hz|
|100HZ||0 to 100 Hz|
|200HZ||0 to 200 Hz|
|300HZ||0 to 300 Hz|
|500HZ||0 to 500 Hz|
|1KHZ||0 to 1 KHz|| || |
|2KHZ||0 to 2 KHz|
|3KHZ||0 to 3 KHz|
|5KHZ||0 to 5 KHz|
|10KHZ||0 to 10 KHz|
|20KHZ||0 to 20 KHz|
|30KHZ||0 to 30 KHz|
|50KHZ||0 to 50 KHz|
The input, output and power circuits are isolated by3500 volts of galvanic isolation. The isolation protectsagainst potentially damaging voltages from passingthrough the signal conditioners into connected systems.The isolation also provides improved measurementaccuracy by minimizing the effects of ground loops andelectrical noise.
Each DRF series signal conditioner is available withcurrent and voltage output (only one may be used at atime). Available output types include 4 to 20 mA or0 to 10 Vdc. Although pre-configured before shippingfrom the factory, the output may be changed throughan internal jumper change.Standard outputs are linear and proportional to thesignal input.
Signal Type: NPN, PNP, NAMUR,Voltage Pulse, AC up to 200 Vac(2 ranges < 24 Vac and < 200 Vac)
Accuracy: <0.2% full scale
Linearity: <0.1% full scale
Thermal Drift: 250 ppm/°Ctypical (max <200ppm/°C)
0 to 100 Hz: <300 mS (90% of signal)
0 to 500 Hz: <250 mS (90% of signal)
0 to 5 KHz: <200 mS (90% of signal)
0 to 50 KHz: <150 mS (90% of signal)
(<24 Vac Range): 100 KΩ
Voltage Input:(<200 Vac Range): 1 M
PNP and NPN Input: 10 KΩ
NAMUR Input: 1 KΩ
Over Range Protection
Voltage Input(<24 Vac Range): 75 V
Voltage Input(<200V ac Range): 300 V
PNP and NPN Input: 35 V
NAMUR Input: Always poweredby 9V2
Power: 24 Vdc ±10%, 230 Vac ±10% 50/60 Hz,115 Vac ±10% 50/60 Hz
Power Consumption: <3.8 VA
Output: 4 to 20 mA and 0 to 10 Vdc
Maximum Voltage Output: 11 Vdc approx.
Minimum Voltage Output: -1 Vdc approx.
Minimum Load Resistance (Voltage): >1 KΩMaximum Current Output: 22 mA approx.
Maximum Current Output: -1.5 mA approx.
Maximum Load Resistance (current): >400 Ω
Electrical Connections: Plug-in screw terminals
(DC Powered Models): 120 g (4.2 oz)
(AC Powered Models): 200 g (7 oz)
(DC Powered models):
110 H x 22.5 W x 93 mm D (4.3 x 0.9 x 3.7")
(AC Powered models):
110 H x 37 W x 93 mm D (4.3 x 1.46 x 3.7")
Operating Temperature: 0 to 60°C (32 to 140°F)
Storage Temperature: -20 to 70°C (-4 to 158°F)
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