Festo MPA-S, Руководство пользователя

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4 Commissioning
96 Festo – P.BE-MPA-EN – 1309f – English
– The proportional pressure regulator interprets nominal values which are smaller than
1 % full scale as zero point switch-off, i.e. the valve is force-ventilated and therefore
assumes a defined position.
– If the load voltage is switched off (for example, with EMERGENCY OFF), the last output
pressure set of the proportional pressure regulator remains intact. In the medium
term, the pressure at the output can increase or diminish. For the QX variant of the
proportional pressure regulator, this means that the last set pressure is applied at
output 2 of the sub-base. For the QZ variant of the proportional pressure regulator,
the last set pressure in channel 1 applies, i.e. all valves of this pressure zone are pres-
surized with the last pressure set.
VPPM-…TA-... Output pressure with
signal 1 % FS
1) 2)
Output pressure with
signal 100 % FS
1) 2)
2 bar type 0.02 bar 2 bar
6 bar type 0.06 bar 6 bar
10 bar type 0.1 bar 10 bar
1) FS = Full scale (1 % FS = 0.1 V / 100 % FS = 10 V)
2) 0 V = 0 bar
Tab. 4.8 Output signal of the proportional pressure regulator
Additional important specifications on commissioning the proportional pressure regulat-
or, such as parameterisation, significance of the LED display, can be found in the MPA-...
electronics description.