EFR4001IP
12720-0713-00
Page
23 / 53
www.ziehl.de
Switch-off MIN monitoring (relay K1 & K2):
•
If the measured power P L123 falls below the limit
“power Kx off”, the set time “delay off Kx” starts to
count. If the power stays below the power limit for the entire delay time, the relay Kx switches off.
•
Reconnection: If the measured power P L123 rises above the limit
“power Kx on”, the set time “delay
on
Kx” starts to count. If the power limit remains exceeded for the entire delay time, the relay Kx
switches on (and after reset only if
“auto Reset Kx” = off).
Switch-off Pav,e monitoring (relay K3):
•
Power limit values at switching points S1, S2 and S3 are calculated automatically when Pav,e is
entered. The automatically calculated limit values can be changed manually afterwards.
•
If the measured power P L123 falls below one of these power limits
-
“P(t<10s) S1 off” (=1,02*Pav,e)
-
“P(t<3s) S2 off” (=1,067*Pav,e)
-
“P(t=0s) S3 off” (=1,69*Pav,e)
the corresponding set delay time starts to count
-
“delay off K3: S1” (=10,00 s) for the 1st switching point S1
→
“P(t<10s) S1 off” (=1,02*Pav,e)
-
“delay off K3: S2” (=3,00 s) for the 2nd switching point S2
→
“P(t<3s) S2 off” (=1,067*Pav,e)
-
“delay off K3: S3” (=0,10 s) for the 3rd switching point S3
→
“P(t=0s) S3 off” (=1,69*Pav,e).
If the measured power P L123 stays below the power limit for the entire delay time, the relay K3
switches off.
•
Reconnection: If the measured power P L123
rises above the limit “power K3 on”, the set time “delay
on K3
” starts to count. If the power limit remains exceeded for the entire delay time, the relay K3
switches on
, if the function “auto Reset K3” = on (and after a manual reset only if “auto Reset K3” =
off).
Examples:
•
Pav,e - monitoring:
See
application description Pav,e
•
Limitation of grid-infeed:
Own-generating unit produces more power than permissible at the grid-connection point:
EFR4001IP switches on 1 or 2 consumers. If this is not sufficient, the generation is reduced or
switched off.
•
Zero-grid-infeed: It is not allowed to feed into the grid.
EFR4001IP switches on 1 or 2 consumers. If this is not sufficient, the generation is reduced or
switched off.
•
Storage without import:
EFR4001IP shuts down the unit, in case of power flow in inadmissible direction (to battery).
•
Storage without delivery to grid (zero export):
EFR4001IP shuts down the unit, in case of power flow in inadmissible direction (to grid).
•
Connection of adjustable consumer at the analogue output:
The EFR4001IP regulates energy flow to a programmable value. Shut down only when power of
consumer reaches maximum and energy flow cannot be limited sufficiently.
