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Data Sheet • Mann Series
A u x i l i a r y Powe r e d , I s o l a t o r s
SFI Single Channel, Isolator
DFI Dual Channel, Isolator and Signal Splitter
The SFI is a single channel, auxiliary
powered, isolator for current/voltage signals.
The DFI combines two isolators, which can
be used separately or as a signal splitter.
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Single and dual channel versions
Power for active input devices
Highly accurate (±0.1% of span)
LED status indication
Bipolar inputs
Switch selectable input format
Front panel zero and span adjustment
Complete Isolation
AC or DC powered
Removable, screw-type, terminal blocks
Compact metal housing
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Australia
Weidmüller Pty Ltd.
43 Huntingwood Drive, Huntingwood
NSW 2148
Phone +61 (0) 2 9671 9999
Fax
+61 (0) 2 9671 9900
[email protected]
www.mannseries.com
United Kingdom
Other countries
Weidmüller Ltd.
1 Abbey Wood Road, Kings Hill
West Malling, Kent ME19 4YT
Phone +44 1732-877032
Fax
+44 1732-873873
[email protected]
www.weidmueller.com
Weidmüller Interface GmbH & Co.
Postfach 3030
32720 Detmold
Phone +495231-14-0
Fax
+495231-14-2083
[email protected]
www.weidmueller.com
Auxiliary Powered, Signal Isolators
General Information
The standard package has a single 24Vdc
output to drive a loop powered transmitter
as input. The second power supply output
(on DFI channel two) is standard.
Input channel one, Input channel two,
Output channel one, Output channel two
and the power supply are all fully isolated
from one another.
Technical Specifications
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Technical Specifications
Connections
Inputs
Terminal
Signal
Type
Switch selectable current/voltage format
1
24Vdc (out)
Ranges
4-20mA, 0-20mA, 0-10V, -10 to + 10V
Other ranges on request
2
Current +
3
Common −
4
Voltage +
5
24Vdc (out)
6
Current +
7
Common −
8
Voltage +
9
Neutral (−)
10
Live (+)
Input channel one
Input impedance
22Ω (current inputs) or 1MΩ (Voltage inputs)
Power supply (out)
One 24Vdc (to 25mA) per channel
Outputs
Type
Current/voltage format (as ordered)
Ranges
4-20mA or 0-20mA (into 0–1kΩ load)
0-10V (minimum load 430kΩ)
1-5V (minimum load 215kΩ)
Other ranges on request
Input channel two
(DFI only)
Power supply
Power Supply
Type
AC or DC powered
11
Not used
AC
Voltage 110V/240V, Frequency 50Hz/60Hz
12
Output +
DC
12-50Vdc
13
Output −
Nominal Power Usage (SFI)
AC 4.6VA @ 240Vac/110Vac
DC 4.5W @ 24Vdc
14
Not used
15
Output +
16
Output −
Case
Earthing is via a stud on lower side of case
Adjustments
Type
20-turn potentiometers
Span
±25% of span
Zero
±25% of span
Output channel one
Output channel two
(DFI only)
Dimension drawing
Environmental Conditions
Operating temperature
0 to 60 °C
Storage temperature
-25 to +70 °C
Pollution Degree
2
Relative humidity
10–90% (non–condensing)
RIGHT HAND SIDE VIEW
Insulation Co-ordination
Ports
97 mm
Input Channel One / Output Channel One
Input Channel Two / Output Channel Two / Case
Rated Insulation Voltage
300Veff
Overvoltage Category
III
Impulse Withstand
4kV (1.2 / 50)
Isolation
2 kV (between ports)
TOP VIEW
Performance
Linearity
Better than ±0.1%
Temperature drift
<0.05% span per °C
Long term drift
0.1% per 10,000 hours
Response time 10%-90%
280mS
46 mm
Effective depth :
120mm (Top Hat 35mm +/- 0.3, DIN 46277-3, EN 50022)
125mm (G - Rail 32mm +/- 0.3, DIN 46277-1, EN 50035)
To surface (including rail/mounting plate)
Housing
Type
Dual DIN rail mount
Dimensions
See diagram
Weight
0.35kg
Connection type
Plug in terminal blocks with screw connections
Wiring
Approvals
SFI and DFI
SFI and DFI - DC Powered
versions only
Mark
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E256486
LV Directive
EMC
Ordering Information
Type (Model Input/Ouput/Supply)
Cat. no.
Use 12-28AWG Cu Wire rated >60°C
SFI 0-10V/4-20mA/12-50Vdc
7940016083
Standard
SFI 4-20mA/4-20mA/12-50Vdc
7940010212
CAN/CSA C22.2 No. 1010.1:92
UL61010-1: 2004
DFI 0-10V/4-20mA/12-50Vdc
7940012275
DFI 4-20mA/4-20mA/12-50Vdc
7940010167
EN50178:1998
BS EN 61326:1998 + A2
Note: For other ranges please specify Model 1/2/3 where:
1 = Input, 2 = Output, 3 = Supply
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Subject to technical alterations without notice • Printed in Australia • 7940015647 • 09/2007
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