M-system LTCNE Instruction Manual

Power Transducer Series LT-UNIT
AC CURRENT TRANSDUCER
(Self-powered, RMS sensing)
Functions & Features
• Converts alternating current from a current transformer
into a standard process signal
• Minimum ripple
• True RMS sensing
• No auxiliary power source required
• Isolation up to 2000 V AC
• High-density mounting
• Conforms to IEC 60688

Typical Applications

• Centralized monitoring and control of motors, pumps or
heaters by DCS
• Monitoring power line and power supply current
39
(1.54)
111
(4.3 7)
143 (5.63)
mm (inch)
MODEL: LTCNE–[1][2][3]

ORDERING INFORMATION

• Code number: LTCNE–[1][2][3]
Specify a code from below for each [1] through [3].
(e.g. LTCNE-1G/T)
[1] INPUT
Current
1: 0 – 1 A AC (used within 0.1 – 1 A)
2: 0 – 2A AC (used within 0.2 – 2 A)
5: 0 – 5 A AC (used within 0.5 – 5 A)
[2] OUTPUT
Current
G: 0 – 1 mA DC (Load resistance 5000 Ω max.)
Voltage
3: 0 – 1 V DC (Load resistance 2000 Ω min.)
4: 0 – 10 V DC (Load Resistance 20 kΩ min.)
SEN TRONIC
AG
Produkte, Support und Service
5: 0 – 5 V DC (Load resistance 10 kΩ min.)
[3] OPTIONS
Terminal cover
blank: Without
/T: With

GENERAL SPECIFICATIONS

Connection: M4 screw terminals (torque 1.2 N·m)
Screw terminal: Chrome-plated steel
Housing material: Flame-resistant resin (black)
Isolation: Input to output
Input waveform: Up to 15 % of 3rd harmonic content
Overrange output: 10 – 120 % at 0 – 5 V
Span adjustment: 95 to 105 % (front)

INPUT SPECIFICATIONS

Frequency: 50 or 60 Hz
Operational range: 10 – 120 % of rating
Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4
sec., 120 % continuous
Input burden: 2 VA
• Overload Capacity

OUTPUT SPECIFICATIONS

OPERATION DIAGRAM
Note: The described accuracy is not assured within 0 –10%
of the rating, though output signal exists.

INSTALLATION

Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 300 g (0.66 lbs)
Rugghölzli 2 Tel. +41 (0)56 222 38 18
CH - 5453 Busslingen Fax +41 (0)56 222 10 12
MODEL: LTCNE
10
5
0
2000 4000
CURRENT [%]
OUT %
100
50
0
0 10 50 100
IN %
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www.sentronic.com