Description of Functions
EN-US · 30.30.01.01961 · 00 · 06/19
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8.5.1 Externally controlled blow-off
The “blow-off” valve is controlled directly by the “blow off” command. The ejector switches to blow-off
mode for as long as the "Blow-off" signal is present. The "Blow-off" signal is given priority over the "Suc-
tion" signal.
In this mode, the blow-off function is set to [
-E-
].
8.5.2 Internally time-controlled blow-off
In this mode, the blow-off function is set to [
1-t
].
The “blow-off” valve is automatically activated for the configured time period as soon as the ejector
leaves “suction” mode. The blow-off time can be set with the parameter [
tbL
] in the main menu.
The “blow-off” signal overrides the “suction” signal, even if the specified blow-off time is very long.
8.5.3 Externally Time-Controlled Blow-Off
In this mode, the blow-off function is set to [
E-t
].
The blow-off pulse is triggered externally by the "Blow-off" signal/command. The "Blow-off" valve is acti-
vated for the specified time [
tbL
]. A longer input signal does not increase the blow-off duration.
The "Blow-off" signal overrides the "Suction" signal, even if the specified blow-off time is very long.
The blow-off time can be set with the parameter [
tbL
] in the main menu.
8.5.4 Setting the Blow-Off Time [P-0: 0x006A]
If the blow-off function of the ejector is set to internally time-controlled [
blo
] = [
1-t
] or externally
time-controlled [
blo
] = [
E-T
] "Blow-off", then the blow-off time [
tbL
] may be specified.
The blow-off time can be set using the [
tbL
] parameter in the main menu.
The value displayed indicates the blow off time in seconds. The time can range from 0.10 to 9.99 seconds.
8.6 Output function [0x0047]
The signal output can be switched between [
no
] (normally open) and [
nc
] (normally closed) contact.
To switch this setting, use the [
0u2
] menu item in the extended functions menu, or IO-Link.
The function of the switching threshold SP2/rp2 (component check) is assigned to the Ou2 signal output.
8.7 Output type [0x0049]
The output type can be used to switch between PNP and NPN. To switch this setting, use the [
P-n
] menu
item in the EF menu, or IO-Link.
8.8 Selecting a Display Unit [0x004A]
The unit of the displayed vacuum level can be set using this function.
The function can be configured with the parameter [
uni
] in the EF menu or via IO-Link.
The following units are available:
Unit
Explanation
bar
The vacuum level is displayed in mbar.
The setting for this unit is [
bAr
].
Pascal
The vacuum level is displayed in kPa.
The setting for this unit is [k
PA
].
Inch of Hg
The vacuum level is displayed in inHg.