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643xA1: Terminal
643xA2: Terminal In1: 44 43,42,41
643xA3 : Terminal Ch1: 44 43,42,41
Ex nA & Ex ec
Vmax = 7.2VDC
643xA1: Terminal: 11,12
643xA2: Terminal: 11,12
643xA3: Terminal: Ch1: 11,12
Supply / output circuit
Ex nA &
Ex ic
Ex ec
Li = 0 uH
Ci = 1.0 nF
Vmax=
Ui= 37
37 VDC
VDC
Vmax=
Ui= 30
30 VDC
VDC
General installation instructions
If the enclosure is made of non-metallic materials, or if it is made of metal having a
paint layer thicker than 0.2 mm (group IIC), or 2 mm (group IIB, IIA, I), or any thickness
(group III), electrostatic charges shall be avoided.
For an ambient temperature ≥ 60ºC, heat resistant cables shall be used with a rating of
at least 20 K above the ambient temperature.
The enclosure shall be suitable for the application and correctly installed
The distance between terminals, inclusive the wires bare part, shall be at least 3 mm
separated from any earthed metal
'TEST' connection, may only be applied when the area is safe, or if supply / output
circuit and the applied current meter are intrinsically safe.
Warning: Do not connect or disconnect Terminal Blocks when energized.
44 43,42,41
In2: 54 53,52,51
Ch2: 54 53,52,51
Ex ic
Uo: 7.2 VDC; Io: 7.3 mA
Po: 13.2 mW; Lo: 667 mH; Co: 13.5μF
Ch2: 21,22
Ex ic
Tempe
Ui= 48 VDC,
rature
Li = 0 uH,
class
Ci = 1.0 nF
Pi= 851 mW
T4
per channel
T5
T6
Pi= 700 mW
T4
per channel
T5
T6
6437V102-FR
Maximum ambient
temperature
Single and
Two
dual input
channel
+85 °C
+85 °C
+70 °C
+65 °C
+55 °C
+50 °C
+85 °C
+85 °C
+75 °C
+70 °C
+60 °C
+55 °C
37
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