ABB REL650 series - Technical Data

CR_GUARD
0-tSecurity
0
150 ms
CR
CRL
LCG
AND
OR
AND
en05000746_ansi.vsd
0
0
200 ms
NOT
OR
ANSI05000746 V1 EN
Figure 247: Guard signal logic with unblocking scheme
The unblocking function can be set in three operation modes (setting Unblock):
Disabled: The unblocking function is out of operation
No restart: Communication failure shorter than tSecurity will be ignored
If CR_GUARD disappears, a CRL signal will be transferred to the trip logic
There will not be any information in case of communication failure (LCG)
Restart Communication failure shorter than tSecurity will be ignored
It sends a defined (150 ms) CRL after the disappearance of the CR_GUARD signal
The function will activate LCG output in case of communication failure
If the communication failure comes and goes (<200 ms) there will not be recurrent
signaling
12.5.7 Technical data
Table 356: ECPSCH (85) technical data
Function
Range or value Accuracy
Scheme type Disabled
Intertrip
Permissive UR
Permissive OR
Blocking
-
Communication scheme
coordination time
(0.000-60.000) s ± 0.5% ± 25 ms
Minimum duration of a send
signal
(0.000-60.000) s ± 0.5% ± 25 ms
Security timer for loss of carrier
guard detection
(0.000-60.000) s ± 0.5% ± 25 ms
Section 12 1MRK 506 335-UUS A
Scheme communication
522
Technical manual