m
Mode Key
+
Control Set Point
J
NOTE:
The
Upper display
will always show the
process value after 1
minute without key
strokes.
=
Prompt appears or not according to control configuration.
1 g.f$fygj [!I
.
Operation Parameters
Set Point 2: Sets the operating set point for Output 2 when control mode is
Ht/
Ht or CL/CL. SP2 only appears when Ot1 and 0t2 are the same, and functions
as an ON/OFF control.
Proportional Band: Set the proportional bandwidth for each Output, adjustable
from 0
°
to
999°F
or 0 to
555°C
for ranges displayed in whole degrees,
and 0
to
99.9°F
or 0 to
55.5°C
for ranges displayed in 0.1°. If set at Pb
=
0, the Series
9801985 functions as a simple ON/OFF control with a 3
°F
or
1.7°C
switching
differential for ranges displayed in whole degrees, and
0.3°F
or
0.17°C
for
ranges displayed in 0.1°
.
The default is
25°F/13°C.
If the input type is
0-5VDC
or
4-20mA,
the range of Pb1 is 0-999, 0-99.9 or
O-
9.99 (determined by the value of DEC). The switching differential is 0.03, 0.3 or
3 units. Pb2 default is
0.
Pb2 only appears with
Ht/CL
or
CL/Ht
operation.
Reset: Enter Reset for Output 1 or 2, adjustable from 0.00 to 9.99
rpts/min.
A
value of 2.00
rpts/min.
corresponds to an integral time constant of 30 seconds.
Selecting 0.00
=
no integral action.
rE2
only appears with
Ht/CL
or
CL/Ht
operation.
rA
X
will not appear if Pb
X
=
0 respectively.
Rate: Adjust Rate function for Output 1 or 2, from 0.00 to 9.99 minutes maxi-
mum. Selecting 0.00
=
no derivative action.
rA2
will only appear with
Ht/CL
or
CL/Ht
operation.
rA
X will not appear if Pb X
=
0 respectively.
Cycle Time: Enter the Cycle Time for each Output, adjustable from 1 to 60
seconds. The default
will
be 5 seconds. Ct1 will not appear if Output 1 is
4-20.
CT2 only appears with
Ht/CL
or
CL/Ht
operation..
Figure 29
-
The Operation Menu.
Setup, Chapter
4
WATLOW Series 980/985 User’s Manual
27