德國科尼克VariTrans A20000隔離器(KNICK)
A20000標準信號隔離放大器
輸入和輸出可選擇0...20mA,4...20mA,0...10V,測量精度為0.2%或0.3%，供電24/DC,
工作電壓為300V,測試電壓2.5kV
Input data
Inputs ：0 ... 20 mA，4 ... 20 mA，0 ... 10 V，Switchable (factory setting 0 ... 20 mA)
Input resistance：Current input:Voltage drop <0.1 V at 20 mA
Voltage input:Approx. 100 kohms
Overload：Current input:<100 mA
Voltage input:Voltage limited to 30 V with suppressor diode,max. permitted continuous current 3 mA
output data
Outputs:0 ... 20 mA，4 ... 20 mA，0 ... 10 V，Switchable (factory setting 0 ... 20 mA)
Load:With output current:≤10 V (≤500 ohms at 20 mA)
With output voltage:≤1 mA (≥10 kohms at 10 V)
Offset:<20 µA or <10 mV
Residual ripple:<10 mVrms
Transmission behavior
Gain error:<0.2 % meas. val. with direct 1:1 current transmission
<0.3 % meas. val. with voltage input and/or voltage output
Additional error in live-zero operation 20 µA or 10 mV
Temperature coefficient2):<0.01 %/K full scale
Average TC in specified operating temperature range 0 ... +55 °C, reference temperature 23 °C
Cut-off frequency:>100 Hz, –3 dB
Power supply
Power supply:24 V DC (±25 %), approx. 0.65 W
Power supply can be routed from one device to another via DIN rail bus connectors.
A green LED on the device front signals that power supply is connected
Isolation
Galvanic isolation:3-port isolation between input, output and power supply
Test voltage:2.5 kV AC, 50 Hz, across input and output/power supply
0.51 kV AC, 50 Hz: across output and power supply
Working voltage(basic insulation):Up to 300 V AC/DC across input and output/power supply with overvoltage category II and pollution degree 2, up to 100 V AC/DC across output and power supply with category II and degree 2 according to EN 61010 Part 1.
Protection against electric shock:Safe Isolation up to 300 V across input and output/power supply according to EN 61140 by reinforced insulation according to EN 61010 Part 1 with overvoltage category II and pollution degree 2. For applications with high working voltages, you should ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
Standards and approvals
EMC3) : Product standard: EN 61326.
Emitted interference: Class B
Immunity to interference: Industry
Slight deviations are possible while there is interference
Approvals:cURus, File No. E 220033
Standards: UL 508 and CAN/CSA 22.2 No. 14-95
Other data:
MTBF4):Approx. 280 years
Ambient temperature:Operation:0 ... +55 ºC when mounted in row
Storage:–40 ... +85 ºC
Design:Modular housing with screw terminals, power supply also possible via DIN rail bus connectors 6.2 mm wide, see dimension drawing for further dimensions
Protection class:IP 20
Mounting:For 35 mm top hat rail to EN 60715
Weight:Approx. 60 g
