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en
29
Adjustments
Tr
oubleshooting
Data comm
unication
Example:
Funktion
Thermostat a
Thermostat b
Differential function
∆
T
Timer
Flow rate dependent de-/activation
Reference relay
Relais
Tha-S3
Thb-S4
∆
T-S3>S5
Timer
dVon/dVoff
Reference relay
R3
As soon as at least one of the reference relays is ac-
tive, the switch-on condition for the reference relay
function is considered unfulfilled.
In the AND mode, the switch-on condition for the
reference relay function is considered fulfilled when
none of the reference relays is inactive.
As soon as at least one of the reference relays is inac-
tive, the switch-on condition for the reference relay
function is considered unfulfilled.
In the NAND mode, the switch-on condition for the
reference relay function is considered fulfilled when
at least one of the reference relays is inactive.
If none of the reference relays is inactive, the switch-
on condition for the reference relay function is con-
sidered unfulfilled.
Note:
If more than one function block has been
activated, relays of numerically higher func-
tion blocks may not be used as reference
relays.
Note:
For more information about timer adjust-
ment, see page 10.