ABB RER620 Technical Manual

1MAC309294-MB F Section 6
Condition monitoring functions
RER620 363
Technical Manual
Opening time Cor (=t
1
+t
2
). 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_A(_B,_C) and the closing travel
time T_TRV_CL_A(_B,_C) are available through the Monitored data view on the
LHMI or through tools via communications.
Alarm limit check
When the measured open 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 close
travel time is longer than the value set with the Close alarm time setting, the, 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.
6.1.4.4 Operation counter
The operation counter subfunction calculates the number of breaker operation cycles. Both
open and close operations are included in one operation cycle. The operation counter value
is updated after each open operation.
The operation of the subfunction can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
Figure 197: Functional module diagram for counting circuit breaker operations
Operation counter
Operation
counter
(A)
POSCLOSE_A
RST_CB_WEAR
OPR_ALM
OPR_LO
BLOCK
Alarm limit
check
POSOPEN_A
Operation
counter
(B)
POSCLOSE_B
POSOPEN_B
Operation
counter
(C)
POSCLOSE_C
POSOPEN_C

ABB RER620 Specifications

General

Brand	ABB
Model	RER620
Category	Controller
Language	English