L1
L2
L3
N
PE
JP
5W
JP
5W
JP
5W
JP
5W
SMC 144 / PA 144
S
O
U
RC
E
LOAD
Electricity billing meter
JP
3W
JP
3W
JP
3W
L1
L2
L3
N
PE
S
M
C 14
4 /
P
A
1
44
100/5A
100/5A
100/5A
S
O
U
RC
E
LOAD
(a) Direct measurement principle for currents up to range
corresponding to device variant.
(b) Example of indirect measurement over primary current
transformers with ratio 100/5 A.
Figure 4: Current input connection possibilities.
·
Daylight Saving
- This parameter can be set to automatically switch of the local time according
to the season (e.g. summer or winter time).
*
Remote communication
- Device is always equipped with main RS-485 interface. It is optionally
available with secondary RS-485 interface, ethernet port or other communication interface. In
this part of
General Configuration
, all corresponding parameters of communication interfaces can
be set.
·
Device Address
- Address of the device with RS-485. Assign a unique address to all devices
connected to a same bus.
·
Serial Comm Speed
- RS-485 baud rate. Default is 9600 bps.
·
IP Address
- IP address of the device with ethernet.
·
Net Mask
- Net mask of a network.
·
Default Gateway
- Setting of default network gateway.
·
Ports
- Setting of ports, on whose the device is listening for communication. Default
KMB
Long
message port is 2101, default
Modbus
port is 502 and default
Web server
port is 80. Ev-
ery port can be changed to whichever is needed, but don’t forget to change them appropriately
in a remote software.
–
Archive (fig. 5c)
- This settings determines the set of quantities which are being recorded and how:
*
Record Name
– Naming the records helps to distinguish different records in the measured object
(e.g. using the ID marking of the measured transformer). This is again a text string of maximum
length of 32 characters. The records are stored in a database or in a file while using this identifier.
*
Record Interval
– This (aggregation) interval of the recording determines the frequency of entry
into the archives of readings in the range of 200 ms up to 24 hours.
*
Cycle Recording
– With this switch you can determine the behavior of the device when closing
the main archive. If this option is not activated, the memory capacity of the archive of the main
unit stops recording data in the archive until the instrument is reconfigured. Otherwise, the
record continues with the new measured values overwriting the oldest values first (FIFO). The
main archive than contains the “latest” data of a total length corresponding to the capacity of
the main archive.
9
