40
6 - Special functions
There are two possibilities:
A Start-up Setpoint #sp.sU
lower than the local Setpoint.
The “Hold” phase starts when
the process variable PV
achieves the
#sp.sU (with a
tolerance of 1 digit).
B Start-up Setpoint #sp.sU
greater than or equal to the
local Setpoint.
When the process variable PV
achieves the local Setpoint (with a tol-
erance of 1 digit), the Start-up function
passes directly to the “Off” phase.
If, at the controller power-on, the
process variable PV is greater than
the lowest between the
#sp.sU and
the working Setpoint , the next phase
(“Hold” or “Off”) will be executed
instead of the “Limy” phase.
During the
“Limy” and
“Hold” phas-
es the
Ö led
is on.
To Next Page
Loading...
Need help?
General
