Festo VTOP, Руководство по эксплуатации

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Festo — VTOP — 2021-07
Modification
23
11 Fault clearance
Malfunction Possible cause Remedy
Low compressed air flow Restriction in the compressed
air line Check compressed air line
Filter cartridge dirty Change filter at filter regulator
PCRI
Pressure increases above the
set working pressure Valve disc defective at sealing
seat Replace filter regulator PCRI
Audible, continuous blowing
noise at rotary knob Valve seat damaged Replace filter regulator PCRI
Pneumatic drive does not move
in the desired direction Cable of the displacement
encoder incorrectly connected
to the positioner or the pneu-
matic drive Correct the connection on the
positioner or on the pneumatic
drive
Active direction reversed Reverse the reversing plate in
the end plate VABA
Pneumatic drive does not move
to the desired end position in
the event of a compressed air
failure Supply air port (1) on fail-safe
module VOGI not connected or
operating pressure too low Check supply air port (1) on fail-
safe module VOGI
Active direction reversed Reverse the reversing plate in
the end plate VABA
Pneumatic drive cannot hold
intermediate position Compressed air flow rate at the
VOGM volume booster too low Increase compressed air flow
rate
Mechanical defects in the com-
pressed air lines and functional
elements, z. B. corrosion or
leakage Condensate formation too high Install condensate drain or
water separator, e.g. PWEA or
MS-LWS
Tab. 8: Fault clearance
12 Modification
12.1 Converting valve terminal VTOP
The valve terminal VTOP in converted in reverse order to the mounting è 6 Assembly.
The installation rules must be observed è 6.1.1 Rules for set-up.