ES-1945 Rev.2
LECA
Power Transducer Series L-UNIT
CT TRANSDUCER
(super-miniature size; self-powered, average sensing, RMS calibrated)
Functions & Features
• Converting an alternating current from a current transformer into a standard process signal
• Minimum ripple
• No auxiliary power source required
• Isolation up to 2000 V AC
• High-density mounting
Typical Applications
• Centralized monitoring and control of motors, pumps or heaters by DCS
• Monitoring power line and power supply current
MODEL: LECA–[1][2][3][4]
ORDERING INFORMATION
• Code number: LECA -[1][2][3][4]
Specify a code from below for each of [1] through [4].
(e.g. LECA-51G/Q)
• Load resistance (e.g. 160 Ω)
• Specify the specification for option code /Q
(e.g. /C01/S01)
[1] INPUT
Current
1
: 0 – 1 A AC
5
: 0 – 5 A AC
[2] FREQUENCY
1
: 50 Hz
2
: 60 Hz
[3] OUTPUT
Current
G
: 0 – 1 mA DC
Voltage
4
: 0 – 10 V DC
5
: 0 – 5 V DC
[4] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
TERMINAL SCREW MATERIAL
/S01
: Stainless steel
GENERAL SPECIFICATIONS
Construction
: Stand-alone; terminal access at the front
Connection
: M4 screw terminals (torque 1.2 N·m)
Screw terminal
: Nickel-plated brass (standard) or stainless steel
Housing material
: Flame-resistant resin (black)
Isolation
: Input to output
Input waveform
: Sine wave
Overrange output
: 0 to 120 %
Span adjustment
: 95 to 105 % (front)
INPUT SPECIFICATIONS
Frequency:
50 or 60 Hz
Input burden:
1 VA
Overload capacity:
1000 % of rating for 3 sec., 200 % of rating for 10sec., 120 % continuous
Operational range:
0 – 120 % of rating
OUTPUT SPECIFICATIONS
■
DC
Current
Load resistance
(Output Range) 0 - 1 mA DC: ≤ 5000 Ω
■
DC
Voltage
Load resistance
(Output Range) 0 - 10 V DC: ≥ 100 kΩ
0 - 5 V DC: ≥ 50 kΩ
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
: 170 g (0.37 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.5 % (at 23°C ±10°C or 73.4°F ±18°F, at rated frequency ±5 %)
Response time
: ≤ 2 sec. (0 – 100 % ±1 %)
Ripple
: 1 %p-p max.
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 2000 V AC @1 minute
(input to output to ground)
Impulse withstand voltage
: 1.2 / 50 μsec., ±5 kV
(input to output or ground)
CONNECTION DIAGRAM
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]