ST500Ex-10-0, Intrinsically Safe Universal Isolating Signal Converter, 230VAC
Properties:The ST500Ex isolating signal converters can be used to isolate and convert field signals 0/4...20mA or 0/2...10VDC out of the intrinsically area.
Isolating signal converter for application in zone 0 or zone 20 (constant explosion risk) with integrated transmitter supply. It allows the direct connection of active 2-wire sensors (4 ... 20mA) and 3-wire sensors in the Ex-area.
The ST500Ex provides a fully floating isolated transmitter supply.
- Input intrinsically safe ATEX II (1) G [Ex ia] IIC, II (1) D [Ex iaD]
- 2 power-supply-designs with wide range of allowed supply voltage:
- 10 ... 30VDC / AC oder 85 ... 253VAC
- Electrically isolated: between input / output / supply voltage
- 22.5 mm standard case for rail mounting TS35
- Universal inputs/outputs for (0)4 ... 20mA and 0(2) ... 10V
Measuring ranges: selectable
Current input:
0 ... 20mA or 4 ... 20mA
(Ri = 25 Ohm, max. 100mA overload)
Voltage input:
0 ... 10V or 2 ... 10V
(Ri = ... 40 kOhm, max. 100V overload)
Span: approx. ±20%, adjustable
Transmitter supply: approx. 20VDC, Ri = approx. 300 Ohm
Output signal:
0 - 20mA, 4 - 20mA, 0 - 10V or 2 - 10V (selectable via DIP switch)
max. load: burden < =1kOhm (at mA), load: max. 15mA (at V)
Basic accuracy: < =0.3% of measuring range
Temperature coefficient: < =0.01%/K
Repeat accuracy: < =0.1% of measuring range
Rise time: T90 = < 100ms
Power supply:
... - 0 - 00 85 ... 253V AC
... - 5 - 00 10 ... 30VDC / AC
Power consumption: max. 3.5VA
Isolation voltage:
500VAC, according to VDE 0110 Gr. 2
between input/output/supply voltage
Test voltage: 4kVDC between input/output/supply voltage
Working temperature: -10 .. 55°C
Electrical connection: screw-terminals with pressure plates, max. 2.5mm²
Dimensions: 22.5 x 75 x 110mm (W x D x H)
Protection: IP30 (case), IP20 (terminals)
Ex-certifi cation: TÜV 97 ATEX 1150, II (1) G [Ex ia] IIC, II (1) D [Ex iaD]
Connection data: U0 = 25.2V, I0 = 95mA, P0 = 600mW,
C0 / L0 (ia/IIC) = 47nF / 2mH or 107nF / 0.2mH,
C0 / L0 (ia/IIB) = 370nF / 15mH or 430nF / 1mH,
Ci, Li = negligible
The intrinsically safe circuit is electrically isolated from the non-intrinsically safe circuits up to a sum of the peak values of the nominal voltage of 375V.
