West Control Solutions KS 45 - Manual (Page 49)

. 9 Timer
9.1 Setting up the timer
9.1.1 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 53).
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 output value are dis-
played alternately in the display line2.
g If Y2 = 0 is set, a switch off function of the outputs can be
realised
Mode 2 (····)
Mode 2 corresponds to mode1, except that control is continued
with the relevant setpoint 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 to Y2 and display 2 shows End alter-
nately with the output value.
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 (
SPr 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 dis-
played alternately in the lower display line.
Timer
KS 45 49 Setting up the timer
start t.SP
3
4
End
SP
start
1
2
t.SP
End
SP b.ti _
start t.SP
SP
start
t.SP
SP SP
SP.2
End
SP.2 b.ti _