Lenze E94ARNE Regenerative power supply - Manual (Page 177)

EDS94ARNExxxx EN 2.3 - 06/2014
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9400 regenerative power supply module | Parameter setting
Oscilloscope
Operation
7.4.3 Selecting the trigger condition
The trigger condition determines the moment at which the recording is started in the
regenerative power supply module. The oscilloscope allows different trigger conditions to
be set for controlling the recording of the measured values.

If the cursor display is activated, click the Trigger button to open the input fields for
configuring the trigger condition.
Setting Function
Source Selection of trigger source:
Variable The oscilloscope triggers on any variable of the PLC program.
• Unlike triggering on a channel, triggering on a variable requires no recording channel.
Channel The oscilloscope triggers on a channel configured in the Vertical table.
System event Triggering is started on occurrence of a selectable event in the regenerative power supply
module (e.g. fault, trouble, or warning).
• Select a negative trigger delay to record signals prior to occurrence of the event.
Force trigger No trigger condition, recording starts immediately after the start.
Trigger value Value from which on triggering is activated.
• The trigger level is not effective for triggering on Boolean variables.
Delay Delay between recording and trigger event.
Pre-trigger Select a negative delay time to detect signals prior to the trigger event.
• In the oscillograph, the trigger time is designated by a dashed line.
• When triggering on occurrence of an event, it is thus possible to detect the values that
have caused the event.
Post-trigger Select a positive delay time to detect signals occurring a certain time after the trigger event.
Edge If the trigger source is a channel or a variable, you can choose between the following trigger
modes:
Positive edge For triggering on a Boolean variable:
• Trigger activation requires a FALSE-TRUE transition.
For triggering on a different variable:
• For trigger activation, the selected trigger value must be exceeded.
Trigger event
Trigger
delay
(negative)
Trigger level
Trigger event
Trigger
delay
(positive)
Trigger level