Spirax Sarco SP500 - Retransmission and Travel Switches Option Board

IM-P343-35 CTLS Issue 5
11
SP500 Electropneumatic Smart Positioner
Fig. 4
Fig. 5
4.2 Retransmission and travel switches option board
An option b o a r d can be  tted in t h e positioner to add valve po sition retrans m i s s i o n functionality and s o f t ware
travel switches functionality.
The board generates a 4-20 mA current signal which represents the actual valve position.
Moreover 2 output terminals are available to be congured as software travel switches.
The threshold can be adjusted via software.
Refer to Section 6, 'Electrical connections' for wirings.
Refer to Section 9.6.7 for travel switching conguration.
An option board is optionally available and can be mounted in situ. In this case please refer to the mounting
instruction below:
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Open the positioner (Figure 4).
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Switch o󰀨 the power supply.
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Switch o󰀨 the air supply.
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Unscrew the board as shown in Figure 5.