ABB RELION REX640 Technical Manual page 1567

1MRS759142 C
REX640
Technical Manual
Table 1415: Default blocking schema in OL5ATCC
Active Command Load
operation current
mode
Manual, Raise
Parallel
Lower
manual
Auto Raise
follower
Lower
Auto Raise
single,
Lower
Auto
master,
NRP,
MCC
1) Because the circulating current is calculated only in the NRP and MCC modes, it can have a blocking
effect only in these modes.
2) In these cases the automatic operation notices that the extreme position has already been reached and
there is no need to activate the signal for data set event sending. The automatic follower case can here
be compared to a manual case and an event can be sent, that is, the corresponding output is activated.
In addition to the default blocking, the Custom Man blocking setting has been added
due to different operation practices of the manual command blocking. The setting can
be used to adapt blockings considering the manual overcurrent, undervoltage or
external blocking. (The blockings are in
lower voltage and External block for the manual operating mode.) The default value
for the parameter is "OC". This means that the default blocking schema explained in
Table 1415 operates as such. However, there are other alternatives that cause different
operations.
Table 1416: Customized manual blocking schema
Manual Enumeration
blocking
1 Custom disabled
2 OC
3 UV
4 OC, UV
5 EXT
6 OC, EXT
7 UV, EXT
8 OC, UV, EXT
Block lower Runback
voltage raise
voltage
X X
X
X X
X X
X X
X X
Table 1415
Description
No load current, block lower (under) voltage, external blocking has
no effect in the manual operation modes
Load current blocking has an effect in the manual operation modes
Block lowering (under) voltage blocking has an effect in the manual
operation modes
Conditions 2 and 3 together: Load current and block lowering
(under) voltage blocking have effect in the manual operation
modes
External blocking has effect in the manual operation modes
Conditions 2 and 5 together: Load current and external blocking
have effect in the manual operation modes
Conditions 3 and 5 together: Block lowering (under) voltage and
external blocking have effect in the manual operation modes
All conditions 2, 3 and 5 together: Load current, block lowering
(under) voltage and external blocking have effect in the manual
operation modes
Section 9
Control functions
High External Extreme
circulating block positions
current
X
X
X
1)
X
X
1)
X
in columns Load current, Block
X
X
X
X
2)
X
2)
X
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