Festo MPA-S, Руководство пользователя

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4 Commissioning
Festo – P.BE-MPA-EN – 1309f – English 95
4.5.2 MPA-S valve terminal with multi-pin plug connection or AS-interface
The LEDs on the valves show the switching status of the valve solenoid coils.
LED Position of the valve Correct status Error status
Dark – Normal position Logic 0 (signal not present) —
– Activated — Logic 0 but MO actuated
Lights up
yellow
– Activated Logic 1 (signal is present) —
– Normal position — Logic 1 but:
– Operating voltage of the
valves lies below the per-
mitted tolerance range
(18 V DC … 30 V DC)
– The compressed air supply
is not OK or
– The pilot exhaust is
blocked or
– Servicing required
Tab. 4.7 Significance of the LED display (MPA-S valve terminal with multi-pin plug connection or
AS-interface)
4.6 Commissioning instructions for the proportional pressure regulator
Note
• Make sure there is sufficient space for the tube couplings. In this way you will pre-
vent the tubes from being bent.
• Make sure that high-frequency radiation (e.g. from radios, mobile telephones or
other interference-emitting devices) is kept away from the proportional pressure
regulator. In this way you will avoid increased tolerances in the output pressure
(refer to specifications on EMC in Appendix A).
• When switching off the proportional pressure regulator, make sure that first the
supply pressure, then the supply voltage is switched off.
• Pressurize the proportional pressure regulator with an input pressure at least 1 bar
higher than the maximum desired output pressure. An output pressure P2 propor-
tionate to the setpoint value is then set. Tab. 4.8 shows the output pressure which is
assigned to the end ranges (1 % FS or 100 % FS) of the setpoint value.