DC and AC Voltage Input Signal Conditioners

DRF-VDC and DRF-VAC

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AC/DC Voltage Input Ranges
from 60 mV to 650 V
Accuracy 0.3%
Response Time for DC Signals, 70 mS
Response Time for AC Signals, 250 mS
Over Range Protection for Voltage Inputs
High Impedance Voltage Inputs
Galvanic Isolation Between Input, Output and Power

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Description

The DRF series DIN rail signal conditioners are designed to accept a broad range of input signals, such as ac and dc voltage and current, frequency, temperature (thermocouple and RTD), and process transducers, and provide standard process outputs of either 4 to 20 mA, or 0 to 10 Vdc. The DRF series feature a modern housing design, that is easily mounted on standard 35 mm DIN rails. Connections are safely and securely made through pluggable screw terminal connectors, with input and output connections on the opposite sides of the module.

The DRF-VDC and the DRF-VAC voltage signal conditioners accept dc and ac voltages respectively and provide an isolated 0 to 10 Vdc or 4 to 20 mA output. Models are available with three different power options, 24 Vdc, 120 Vac and 240 Vac.

The DRF-VDC and DRF-VAC are ideally suited for industrial applications. All models mount on a standard 35mm DIN rail and provide galvanic isolation between input, output and power up to 3500 Veff (model specific).

Range Code Table for DRF-VDC and DRF-VAC

Range Code	DRF-VDC Range	DRF-VAC Range
75MV	0 to 75 mVdc	0 to 75 mVac
150MV	0 to 150 mVdc	0 to 150 mVac
300MV	0 to 300 mVdc	0 to 300 mVac
650MV	0 to 650 mVdc	0 to 650 mVac
1V	0 to 1 Vdc	0 to 1 Vac
7.5V	0 to 7.5 Vdc	0 to 7.5 Vac
15V	0 to 15 Vdc	0 to 15 Vac
65V	0 to 65 Vdc	0 to 65 Vac
300V	0 to 300 Vdc	0 to 300 Vac
650V	0 to 650 Vdc	0 to 650 Vac

SPECIFICATIONS

Accuracy: <0.2% full scale
Linearity: <0.1% full scale
Thermal Drift: 250 ppm/°C typical
Thermocouple CJC Drift: 0.1°C/°C
Response Time
DC Signal Input Models:< 70 mS (90% of signal)
AC Signal Input Models: <250 mS (90% of signal)
Input Impedance: 1 MΩ for ranges < 1 V, 10 M Ω for ranges > 1 V
Over Range Protection: 1000 V for ranges greater than 100 V, 500 V for ranges less than or equal to 100 V
Max AC Frequency: 1 KHz

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 KΩ Maximum Current Output: 22 mA approx.
Maximum Current Output: -1.5 mA approx.
Maximum Load Resistance (current): >400 Ω

Electrical Connections: Plug-in screw terminals
Protection: IP-30

MECHANICAL DIMENSIONS
Weight:
(DC Powered Models): 120 g (4.2 oz)
(AC Powered Models): 200 g (7 oz)
Dimensions:
(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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Part Number/Desc.

Qty

Description

Examples of common model numbers are shown below. See the Part Number Builder to order specific models.

Models with dc Voltage Input

DRF-VDC-115VAC-150MV-4/20

USD229.00

Availability: 4 weeks

Signal conditioner for dc voltages, 0 to 150mVdc input range, 115Vac power and 4 to 20mA output

DRF-VDC-115VAC-1V-4/20

USD229.00

Availability: 7 weeks

Signal conditioner for dc voltages, 0 to 1Vdc input range, 115Vac power and 4 to 20mA output

DRF-VDC-115VAC-15V-4/20

USD229.00

Availability: 1 week

Signal conditioner for dc voltages, 0 to 15Vdc input range, 115Vac power and 4 to 20mA output

DRF-VDC-115VAC-300V-4/20

USD229.00

Availability: 1 week

Signal conditioner for dc voltages, 0 to 300Vdc input range, 115Vac power and 4 to 20mA output

Models with ac Voltage Input

DRF-VAC-115VAC-150MV-0/10

USD229.00

Availability: 7 weeks

Signal conditioner for ac voltages, 0 to 150mVac input range, 115Vac power and 4 to 20mA output

DRF-VAC-230VAC-300V-0/10

USD229.00

Availability: 1 week

Signal conditioner for ac voltages, 0 to 300Vac input range, 230Vac power and 0 to 10Vdc output

† All amounts shown in USD
Ordering Example: (1) DRF-VDC-115VAC-15V-4/20 Signal conditioner for dc voltages, 0 to 15Vdc input range, 115Vac power and 4 to 20mA output, USD229.00

Part Number Builder

Build Your Part Number Below

	(1)		(2)		(3)		(4)
DRF-		-		-		-

Option Descriptions:

(1) Vdc or Vac Input select from:
VDC for dc voltage input
VAC for ac voltage input

(2) Power select from:
24VDC for 24Vdc power
115VAC for 115Vac power
230VAC for 230Vac power

(3) Input Range select from:
75MV for 0 to 75mV
150MV for 0 to 150mV
300MV for 0 to 300mV
650MV for 0 to 650mV
1V for 0 to 1V
7.5V for 0 to 7.5V
15V for 0 to 15V
65V for 0 to 65V
300V for 0 to 300V
650V for 0 to 650V

(4) Output select from:
4/20 for 4 to 20mA
0/10 for 0 to 10Vdc

Note: All combinations may not be valid, check spec sheet for valid part numbers.