Honeywell DCP551 Mark ΙΙ User Manual page 112

Chapter 7. PARAMETER SETUP
●
PA05
(program autoload)
●
PA14
(manipulated variable deviation rate limit)
●
PA16
(ON-OFF control differential)
7-10
• When program settings are protected, it is not possible to copy programs or load pro-
grams from a memory card.
• When PID parameters are protected, Constant value control data is also protected.
• When settings are protected by setup data, variable parameters, event configurations
and PID parameters, they cannot be loaded from a memory card.
0 : OFF
1 : ON
• This function is available on tne DCP551E***** model only.
PA05
is set to 1 and a memory card is inserted and press LOAD key, display
• When
AUtO
panel 1 shows "
read to program No. 1 in the DCP551. This operation is called " program autoload".
• A load operation other than a program autoload that is started using the LOAD key
can only be performed when
• A program autoload using the external switches can be performed when
to 0 or 1.
When output deviation (%) after a PID computation is larger than the set limit value, the
controller limits the output deviation both of the increase or decrease to the set value.
The following example shows the actual deviation change when the deviation limit is set
to 0.5% and the manipulated variable changes from 20% to 22%. When the set value is
0.5% per 0.1 sec, the output becomes 22% after 0.4 sec.
%
22
21
20
t t + 0.1 t + 0.2 t + 0.3 t + 0.4
When the PID group number is set to ON-OFF or
and a value for the differential between the two operations is set.
Reverse operation
Differential
SP
", display panel 2 shows "
PA05
is set to 0.
P
ON
OFF
PV
LOAd
" and program file No. 1 is
PA05
Sec.
is set to 0.0, ON-OFF control is on
Normal operation
ON
OFF
Differential
PV
SP
is set