Operation Counter - ABB RED615 Technical Manual

1YHT530004D05 D
7.1.4.4
615 series
Technical Manual
A071107 V1 EN
Figure 334: Travel time calculation
There is a time difference t
opening of the POSCLOSE auxiliary contact. Similarly, there is a time gap t
between the time when the POSOPEN auxiliary contact opens and the main contact
is completely open. Therefore, to incorporate the time t
needs to be added with t
with the Opening time Cor (=t
adding the value set with the Closing time Cor (t
closing time.
The last measured opening travel time T_TRV_OP and the closing travel time
T_TRV_CL are available in the monitored data view on the LHMI or through tools
via communications.
Alarm limit check
When the measured opening travel time is longer than the value set with the Open
alarm time setting, the TRV_T_OP_ALM output is activated. Respectively, when
the measured closing travel time is longer than the value set with the Close alarm
time setting, the TRV_T_CL_ALM output is activated.
It is also possible to block the TRV_T_CL_ALM and TRV_T_OP_ALM alarm
signals by activating the BLOCK input.

Operation counter

The operation counter subfunction calculates the number of breaker operation
cycles. The opening and closing operations are both included in one operation
cycle. The operation counter value is updated after each opening operation.
The operation of the subfunction can be described with a module diagram. All the
modules in the diagram are explained in the next sections.
Condition monitoring functions
between the start of the main contact opening and the
1
to get the actual opening time. This factor is added
open
+t ) setting. The closing time is calculated by
1 2
Section 7
+t , a correction factor
1 2
+t ) setting to the measured
3 4
2
611