Differential Trip Indication (Tripr); Relative Current Value; Thermal Motor Image [Th] - Eaton EMS-...-SWD Serie Handbuch

3.5.2 Differential trip indication (TRIPR)

3.5.3 Relative current value

3.5.4 Thermal motor image [TH]

In the event of a malfunction or interruption of the main circuits due to a
fault, the trip reason of the interruption is indicated via the TRIPR bit field.
The following trip reasons are shown by the TRIPR bit array:
Table 12: Bit array TRIPR
Value of Meaning
TRIPR bit
array
0x0 Not defined
0x1 Overload
0x2 not assigned
0x3 Phase Imbalance
0x4 Phase failure
0x5 Block
0x6 not assigned
0x7 not assigned
EMS-DOS/ROS-SWD electronic motor starters indicate the current motor
current using input byte 2 and acyclical read object 4. This motor current will
be represented as a relative value within a range of 0 % (0x00) to 255 %
(0xFF). The relative value sent is calculated as the value of the measured
phase current relative to the overload release's set current value.
In order for the motor current value to be sent, the electronic motor starter's
minimum current value must be exceeded. This minimum current is either
0.15 A (in the case of EMS-...-2,4-SWD) or 1.2 A (in the case of EMS-...-9-
SWD).
The maximum measuring accuracy of the transferred relative current value is
5 %.
￫
The value in data field Motor Current [%] can also be read as an
acyclical object (￫ Section 3.7, "Acyclic data", Page 73).
EMS-DOS/ROS-SWD electronic motor starters calculate the motor's thermal
state based on the selected current range and the current current flow, after
which they provide the corresponding value in the form of a data byte. The
motor's thermal load is represented in input byte 3 as a relative value within
a range of 0 % (0x00) to 255 % (0xFF). The main circuits are interrupted as a
result of a motor overload if the thermal motor model is 115 %.
Electronic motor starter EMS-...-SWD 12/18 MN034002ZU-DE/EN www.eaton.com
3 Commissioning
3.5 Diagnostics
69