Festo VTSA-F-CB Manual page 74

Malfunctions
LED Meaning
LEDs of the solenoid coils 12 and 14
– Signal not pending
off
– logic 0
– Signal is pending
yellow
1) – logic 1
light
1) The LED for double solenoid valves only lights briefly during the switching pulse
Tab. 49: LED displays of the valves
10.1.1.3 LED displays of the soft start valves
LED Meaning
Solenoid coil LED 14
– Signal not pending
off
– logic 0
– Signal is pending
yellow
– logic 1
light
LED of the pressure switch
– Pressure in duct (1) is exhausted.
green
– Bit on the CPX terminal is set (bit: 1).
light
Group error LED of the soft start valve P (on the manifold sub-base)
red light Error in the valve (group error)
Tab. 50: LED displays of the soft start valves
74
Possible error
–
Valve has not switched although a
signal is pending.
The following malfunctions may be
present:
– Operating voltage of the valves is
outside the permissible tolerance
range (21.6 ... 26.4 V DC)
– Compressed air supply defective
– Pilot exhaust air blocked
– Service required
Possible errors
–
Valve has not switched although a
signal is pending.
The following malfunctions may be
present:
– Operating voltage of the valves is
outside the permissible tolerance
range (21.6 ... 26.4 V DC)
– Compressed air supply defective
– Pilot exhaust air blocked
– Service required
–
–
Festo — VTSA-F-CB — 2021-06a