ABB RELION REF615R, Technical Manual

Page: 356 / 664

measured between the opening of the
POSOPEN
auxiliary contact and the closing of the
POSCLOSE
auxiliary contact.
A071107 V1 EN
Figure 181: Travel time calculation
There is a time difference t
1
between the start of the main contact opening and the opening
of the
POSCLOSE
auxiliary contact. Similarly, there is a time gap t
2
between the time
when the
POSOPEN
auxiliary contact opens and the main contact is completely open. To
incorporate the time t
1
+ t
2
, a correction factor needs to be added with t
open
to get the actual
opening time. This factor is added with the Opening time Cor (= t
1
+ t
2
) setting. The
closing time is calculated by adding the value set with the Closing time Cor (t
3
+ t
4
) setting
to the measured 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.
Section 6
1MRS240050-IB C
Supervision functions
350 REF615R
Technical Manual