West Control Solutions Pro-16 - Manual (Page 75)

Special
functions
9499-040-93811 / 59537-1 Page 75 of 88 Pro-16
9.5 Timer
9.5.1 Setting up the timer

Operating modes
6 different timer modes are available to the user. The relevant timer mode can be set via
parameter SP.Fn in the Conf menu (
r page 27).
Mode 1 (–)
After timer start, control is to the adjusted set-point .
The timer (
t.SP ) runs as soon as the process value
enters or leaves the band around the set-point
(x =
SP _ b.ti ). After timer elapse, the controller
returns to Y2 . End and the set-point are displayed
alternately in the lower display line.
Mode 2 (····)
Mode 2 corresponds to mode 1, except that control is continued with the relevant set-point
after timer (
t.SP ) elapse.
Mode 3 (–)
After timer start, control is to the adjusted set-point. The
timer (
t.SP ) starts immediately after switch-over. After
timer elapsing the controller switches off. End and the
set-point are displayed alternately in the bottom display
line.
Mode 4 (····)
Mode 4 corresponds to mode 3, except that control is continued with the relevant set-point
after timer (
t.SP ) elapse.
Mode 5 (delay)
The timer starts immediately. The controller output
remains on Y2. After timer (
t.SP ) elapse, control starts
with the adjusted set-point.
Mode 6
After set-point switch-over (
SP r SP.2 ), control is to
SP.2 . The timer ( t.SP ) starts when the process value
enters the adjusted band around the set-point
(x =
SP.2 _ b.ti ).
After time elapse the controller returns to SP . End and
the set-point are displayed alternately in the lower
display line.