UMG 96-PA
/ UMG 96-PA
MID
www.janitza.com
58
13.14.2 External synchronization
An external synchronization for calculating the
three highest values is performed
·Via digital input 3 (e.g. via a pulse generator), or
·Via a Modbus command
External synchronization scenarios:
“No pulse despite setting”
If no pulse is emitted via digital input 3 or
a Modbus command, the measured values
are stored as they would be for an internal
synchronization, however not just to the full
minute!
“A pulse”
If the device receives a pulse once or a Modbus
command outside of the capture time, the
number of measured values summed up until
then is reset to calculate the average value and
the time. The time is newly defined as a relative
zero point and a new calculation is performed!
Example:
The power increases while time progresses. With
the pulse (09:06:47 AM) outside of the capture
time, the values are reset to 0. From this time on,
a new summation of intermediate values starts.
Because no more pulse arrives, the average
value is calculated based on the set time (time
base).
Fig.
SynchronFzatFon prFncFple wFth
“No pulse despFte settFni”
Capture time Capture time Capture time Capture time
Time base
Time base
Time base
Pulse progression digital input 3
Synchronization principle
Example
Maximum
value
Value
Time
stamp
Effective current L1 Trailer pointer 1 3.51 A 9:13:07 AM
Effective current L1 Trailer pointer 2 2.52 A 9:08:07 AM
Effective current L1 Trailer pointer 3 1.52 A 9:03:07 AM
Fig.
Example traFler poFnter storaie wFth
tFme stamp (wFth tFme base set for 5 mFn)
Fig.
SynchronFzatFon prFncFple wFth
“A pulse outsFde of the capture tFme”
Capture time Capture time Capture time Capture time
Time base
Time base
Time base
Pulse progression digital input 3
Synchronization principle
Re-synchronization
Relative
zero point
Time base
Time base
Time base
Example
Maximum
value
Value
Time
stamp
Active power L1 Trailer pointer
reference 1
396.73 W 9:18:47 AM
Active power L1 Trailer pointer
Reference 2
207.34 W 9:13:47 AM
Active power L1 Trailer pointer
Reference 3
80.59 W
9:08:47 AM
Fig.
Example traFler poFnter storaie wFth
tFme stamp (wFth tFme base set for 5 mFn)
