YOKOGAWA UT320 Instruction Manual

5-6
<Toc> <5. Parameters>
IM 05D01D02-41E 1st Edition : May 31,2000-00
● PID-related Parameters
The following parameters are displayed when “1Gr” is set to PID parameter display number
(PID).
In this case, the corresponding target setpoint is 1.SP (target setpoint-1).
To set PID corresponding to target setpoint 2 to 4, set “2Gr”, “3Gr”, or “4Gr” to PID. The
relevant parameters will then be displayed.
Proportional band/Heating-
side proportional band
(in heating/cooling control)
0.1 to 999.9%
In heating/cooling control: 0.0 to 999.9%
(heating-side ON/OFF control applies when 0.0)
5.0%
Integral time
Heating-side integral time
(in heating/cooling control)
OFF (0), 1 to 6000 sec.
OFF (0), 1 to 6000 sec.
240 sec.
60 sec.
Derivative time
Heating-side derivative time
(in heating/cooling control)
Manual reset -5.0 to 105.0%
(enabled when integral time “1.I” is OFF)
The manual reset value equals the output value
when PV = SP is true.
For example, if the manual reset value is 50%,
the output value is 50% when PV = SP
becomes true.
50.0%
(1.P)
(1.I)
(1.D)
(1.MR)
Parameter
Symbol
Name of Parameter Setting Range and Description Initial Value
User Setting
Target Item
in CD-ROM
Cooling-side integral
time
OFF (0), 1 to 6000 sec. 240 sec.
60 sec.OFF (0), 1 to 6000 sec.Cooling-side derivative
time
Deadband
-100.0 to 50.0%
In heating/cooling control, setting any positive
value prohibits both the heating and cooling
outputs from turning on; setting any negative
value allows both the heating and cooling
outputs to turn on; and setting a value of zero
either the heating or cooling output to turn on.
3.0%
(1.Ic)
(1.Dc)
(1.DB)
Zone PID reference
point-1
100% value of
PV input range
(1.RP)
0.0 to 100.0% of PV input range.
Note that 1.RP ⱕ 2.RP.
Cooling-side
proportional band
0.0 to 999.9%
(Cooling-side ON/OFF control applies when
0.0)
5.0%
(1.Pc)
Ref.4.1(1)
Refer to the table below for recording setpoints when two sets or more of PID parameters
are used.
Parameter n=2 n=3 n=4
n.P
n.I
n.D
n.MR
n.Pc
n.Ic
n.Dc
n.DB
None None
n.RP
Reference deviation OFF (0), 0.0 to100.0% of PV input range span
Used to select PID constants according to a deviation from
the setpoint. The 4th group of PID constants is used
when the controller fails to keep track of the deviation.
OFF (0)
(RDV)
Ref.4.1(1)

YOKOGAWA UT320 Specifications

General

Brand	YOKOGAWA
Model	UT320
Category	Controller
Language	English