Burkert Type 8635 - Manual (Page 8)

8
Particular safety instructions
PTB 04 ATEX 2027
in ignition protection class intrinsic safety ex ia iic only for connection to a certified intrinsically safe circuit.
Maximum values:
signal terminal ui ii Pi ci li
Current input 11, 12 30 V 100 mA 1 W negligibly small negligibly small
Process control input 13, 14 30 V 100 mA 1 W 14.3 nF negligibly small
Interface RS 232 1) X4 1 ... 3 8.8 V 100 mA 880 mW negligibly small negligibly small
Actual value output 31, 32 30 V 100 mA 1 W negligibly small negligibly small
Initiators 41, 42 and 51, 52 15.5 V 52 mA 150 mW 200 nF 0.2 mH
Binary outputs 83, 84, 85, 86 30 V 100 mA 1 W negligibly small negligibly small
1) or for connection to a programming device outside the potentially explosive area: Um = 250 V
in ignition protection class intrinsic safety ex ia iic only for connection to a mechanical switch.
Maximum values:
signal terminal uo io co lo
Binary input 81, 82 8.8 V 0.2 mA 5.5 µF 1000 mH
The connections for piezo valves, position measuring system, HART, display and pressure sensor board are intrinsically safe circuits.
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