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Data Sheet • Mann Series
L o o p Powe r e d , I s o l a t o r s
TWI-1 Single Channel
TWI-2 Dual Channel
The TWI-1 and TWI-2 are single and dual
channel, loop powered isolators.
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Current or Voltage inputs
Powered from 4-20mA output loop
Highly accurate (±0.1% of span)
Front panel zero and span adjustment
Complete Isolation
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
Loop Powered, Isolators
TWI-1 Connections
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Terminal
Signal
1
Signal +
2
Not used
3
Signal −
4
Signal +
5
Not used
6
Signal −
Case
Earthing is via a stud on lower side of case
Input
Output
TWI-2 Connections
Terminal
Signal
1
Signal +
2
Signal −
3
Signal +
4
Signal −
Outputs
5
Signal +
Type
4-20mA loop powered
6
Signal −
Ripple
less than 10mV peak to peak
7
Signal +
[(Vs - 12) ∕0.02]Ω (Typically 600Ω at 24Vdc)
8
Signal −
Case
Earthing is via a stud on lower side of case
Technical Specifications
Inputs
Input Channel one
Type
DC milliamp or voltage
Ranges
4-20mA or 0-10V
Input impedance
Input Channel two
27Ω (4-20mA inputs) or ≥1MΩ (0-10V inputs)
Output Channel one
Max loop load
Output Channel two
Power Supply
Type
12-45Vdc loop powered
Line voltage effect
less than 0.05% of span change for 10V change in supply
over 12-45Vdc range
Dimension drawing
Adjustments
Type
22-turn potentiometers
Span
±25% of nominal span
Zero
±25% of nominal span
3*()5)"/%4*%&7*&8
General
Linearity
±0.1% of span
Repeatability
±0.02% of span
Storage temperature
-25 to +70 °C
Operating temperature
-10 to 60 °C
Relative humidity
0-95% (non-condensing)
NN
5017*&8
Temperature drift
±0.05% span per °C
Long term drift
< 0.1% per 10,000 hours
Input response
200mS (from 10% to 90% of span)
RFI Immunity
Less than 0.5% span error for 10V/m from 24mHz to
1000MHz
8JEUI
58*NN
58*NN
Insulation Co-ordination
Ports
Input / Output / Case (for each channel)
Rated Insulation Voltage
300Veff
Overvoltage Category
III
Impulse Withstand
4kV (1.2 / 50)
Isolation
2 kV (between ports)
Ordering Information
Environmental Conditions
Operating temperature
0 to 60 °C
Storage temperature
–25 to +70 °C
Pollution Degree
Relative humidity
0-10V Input
TWI-1 0-10V
TWI-2 0-10V
Cat. No.
7940010159
10–90% (non–condensing)
TWI-2 4-20mA
7940010171
TWI-1 0-10V
7940011660
TWI-2 0-10V
7940012011
Dimensions
See diagram
Weight
TWI-1 0.20 kg
TWI-2 0.25 kg
Page 2
TWI-2 4-20mA
TWI-1 4-20mA
Dual DIN Rail Mount Aluminium Enclosure
TWI-1
TWI-2
Dual Channel
TWI-1 4-20mA
2
Type
Approvals
Single Channel
4-20mA Input
Type (Model Input)
Housing
Connection type
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5PTVSGBDFJODMVEJOHSBJMNPVOUJOHQMBUF
Plug in terminal blocks with screw connections
Mark
Standard
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E256486
CAN/CSA C22.2 No. 1010.1:92
UL61010-1: 2004
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LV Directive
EMC
EN50178:1998
BS EN 61326:1998 + A2
Subject to technical alterations without notice • Printed in Australia • 7940015652 • 09/2007
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