OVEM-…-LK
Festo – OVEM-…-LK – 1602NH English
51
3.3
Valve control
Depending on the input signal, the vacuum solenoid valve or the ejector pulse solenoid valve is con
trolled.
–
IO-Link mode: 2 BCS (binary control signals), bit 0: BDC1, bit 1: BDC2 (
è
–
SIO mode: 1 switching input DI1 (
Z
BCS1). Switching input positive switching (PNP).
–
Auto-drop function: The ejector pulse is generated after the signal change “Suction” (BCS1).
The pulse length can be set through the parameter Auto-Drop time (
è
Valve function OVEM-...-CE
1
2
3
4
5
Auto-Drop
Auto-Drop
t
ab
t
ab
Auto-drop active
Auto-drop inactive
Valve function OVEM-...-OE
1
2
3
4
5
Auto-Drop
Auto-Drop
t
ab
t
ab
Auto-drop active
Auto-drop inactive
1
Control signal BCS1 / switching input DI1
2
Control signal BCS2
3
Vacuum solenoid valve switching status
4
Ejector pulse solenoid valve switching status
5
Vacuum connection (2)
t
ab
Duration of ejector pulse
Fig. 2
Valve control switching behaviour
