DIN Rail Input Loop-Powered Isolators

Description

The DRSL-LPI Series DIN rail input loop powered isolators provide a competitive choice in terms of both price and technology for galvanic isolation of current signals to SCADA systems or PLC equipment. These units provide isolation and 1:1 conversion of standard current signals and are powered by the analog input current signal loop.

The DRSL-LPI series offers isolation between input and output, provides surge suppression and protects control systems from transients and noise. These units also eliminate ground loops and can be used for measuring floating signals. Low power consumption facilitates DIN rail mounting without the need for any air gap. Measurement ranges are factory calibrated. These isolators operates over a wide temperature range from -25 to 70°C (-13 to 158°F).

SPECIFICATIONS
NUMBER OF CHANNELS
    DRSL-LPI-1: 1
    DRSL-LPI-2: 2
CURRENT INPUT
Signal Range (Input to Output): 0 to 20.5 mA
Signal Conversion: 1 to 1
Functional Range: 0 to 23 mA (NAMUR NE43 compliant)
Start up Current: 10 µA typical
Input Overload: 50 mA max
Input to Output Voltage Drop: 1.25V + (0.015 x Vout) where Vout = Iout x Routput, typical
Input Voltage Drop: (Unit voltage drop) + Vout
CURRENT OUTPUT
    Output Load: 600Ω max
    Output Load Stability: <0.01% of span/100 Ω (span = 0 to 20 mA)
    Voltage Limit: 17.5V

GENERAL
Internal Consumption: 30 mW per channel
Isolation Voltage (Test): 2.5 kVac
Isolation Voltage (Working): 300 Vac
Signal/Noise Ratio: >60 dB
Cut-Off Frequency (3 dB): 100 Hz
Response Time (0 to 90%, 100 to 10%): <5 ms
Absolute Accuracy (at 25°C): ≤±10 µA + 0.05% of max value of selected span
Temperature Coefficient: ≤±2 µA/°C
EMC Immunity Influence: <±0.5% of span
Extended EMC Immunity NAMUR NE 21, A Criterion, Burst: <±1% of span

ENVIRONMENTAL
Operating Temperature: -25 to 70°C (-13 to 158°F)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Calibration Temperature: 20 to 28°C (68 to 82°F)
Relative Humidity: 0 to 95% RH non-condensing
Protection Degree: IP20
Installation Area: Pollution degree 2 and measurement/overvoltage category II

MECHANICAL
Dimensions: 113 H x 6.1 W x 115 mm D (4.4 x 0.24 x 4.5")
Weight: 70 g (0.15 lb) approx
DIN Rail Type: DIN EN 60715 - 35 mm
Wire Size: 0.13 x 2.5 mm²/AWG 26 to 12 stranded wire
Screw Terminal Torque: 0.5 Nm

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