Making The Electrical Connection; Connection Diagrams; Zero Point Adjustment - Festo SPAW Manual De Instrucciones

6. Commissioning, operation

6.2 Making the electrical connection

The instrument must be earthed via the process connection.
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The power supply for the pressure sensor must be made via an energy-limited electrical circuit in accordance with
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UL/EN/IEC 61010-1 or an LPS to UL/EN/IEC 60950-1 or class 2 in accordance with UL1310/UL1585 (NEC or
EN
CEC). The power supply must be suitable for operation above 2,000 m should the pressure sensor be used at this
altitude.
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Only ever use a power source that ensures a safe electrical isolation of the operating voltage in accordance
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with IEC/DIN EN 60204-1. In addition, observe the general requirements for PELV circuits in accordance
with IEC/DIN EN 60204-1. Switching power supply units are permissible, if they ensure a safe isolation as defined
by IEC/EN 60950-1.
Long signal cables reduce the immunity to interference. Make sure that the length of the signal cable is always
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shorter than 30 m. In this way you can avoid non−operate currents caused by electromagnetic interference.
For cable outlets, make sure that no moisture enters at the cable end.
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Connection diagrams

Electrical connection
Description
Circular connector M12 x 1; 4-pin
Circular connector M12 x 1; 5-pin

6.3 Zero point adjustment

Check the indicated zero point on the display during commissioning. Should an offset be displayed as a result of instal-
lation, this can be reset in programming mode with the 0SET parameter.
Carry out zero point adjustment in a depressurised state.
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Assignment
U = 1
B
0V = 3
SP1 = 4
SP2 = 2
U = 1
B
0V = 3
A = 5
Out
SP1 = 4
SP2 = 2
Pressure sensor SPAW