Autonics TZ4ST-24R - Functions and Auto-tuning; Auto-tuning Process; Ramp Function Operation

J-151
Dual PID Control
SENSORS
CONTROLLERS
MOTION DEVICES
SOFTWARE
(J)
Temperature
Controllers
(K)
SSRs
(L)
Power
Controllers
(M)
Counters
(N)
Timers
(O)
Digital
Panel Meters
(P)
Indicators
(Q)
Converters
(R)
Digital
Display Units
(S)
Sensor
Controllers
(T)
Switching
Mode Power
Supplies
(U)
Recorders
(V)
HMIs
(W)
Panel PC
(X)
Field Network
Devices
Parameter group 2
Parameter Default Parameter Default Parameter Default
SU-2 0 P #0 IN-B 0
AL1 10 I 0 REST )0
AL2 10 D 0 RAPU 10
LBA 600 T 20 RAPD 10
AHYS 2 HYS 2 LOC OFF
Parameter Default Parameter Default Parameter Default
IN-T KCaH O-FT HEAT FS-L `00
EU-1 AL-1 UNIT ?C RAMP OFF
EU-2 AL-2 H-SC 1300 BPS 2400
AL-T AL-A L-SC `00 ADRS 01
AtT TVN1 DOT 0 LOC OFF
PIDT PIdS FS-H 1300
Parameter group 1
Factory Defaults
SV 2 temperature
You can control an additional temperature value at a desired
range by using SV2. Connect a contact signal (under 5VDC,
250
㎂
) at the external terminal, to operate in the range
where the signal turns ON. Set the SV2 temperature in SV2
temperature [
SU-2
] in parameter group 1.
SV
SV 2 [
SU-2
]
Temperature
Time
E.g.) The internal temperature of an electric oven may
drop rapidly if the door is opened while the oven
is maintaining a specic temperature. Set SV2
temperature [
SU-2
] to a higher value than SV, and
input a signal to the external terminal (SV2 IN), to
quickly raise the temperature.
Auto-tuning
Auto-tuning allows the temperature controller to detect the
thermal characteristics and response rates of the control
target. It then calculates the PID time constant and sets the
value to allow fast response rates and high accuracy. Hold
the key for 3 sec during RUN mode to start auto-tuning.
The auto-tuning indicator will blink. When auto-tuning is
completed, the auto-tuning indicator will durn o󰀨 and the
PID time constant will be saved to each parameter of
parameter group 1. The saved parameters can be adjusted
as desired.
Functions
Ramp
The ramp function can delay the rate of temperature rise/
fall. If the SV value is changed during stabilized control, the
temperature of the controlled target will rise/fall during ramp
up/down time [
RAPU
,
RAPD
] of parameter group 1. The
ramp function activates when the power is reset or when
the SV value is changed during stable control.
※
The ramp up/down time [
RAPU
,
RAPD
] appear only when
the ramp function [
RAMP
] of parameter group 2 is set to
ON
.
●RAMP up time[
RAPU
]
When delaying the rise of initial control temperature or
changing the SV during stable control, you can delay
temperature rise. Set the ramp up time [
RAPU
] longer than
the temperature rise time (tu) when not using the ramp
function.
: Not using ramp function
: Using ramp function
Changed SV
Initial SV
Time
tu tu
Ramp up time
[
RAPU
]
Ramp up time
[
RAPU
]
Temperature
●Ramp down time [
RAPD
]
Delays declining temperature. Set the ramp down time
[
RAPD
] longer than the temperature decline time (td) when
not using the ramp function.
: Not using ramp function
: Using ramp function
Changed SV
Initial SV
td
Time
Ramp down time
[
RAPD
]
Temperature
To manually stop auto-tuning, hold the key for 5 sec.
When auto-tuning is stopped, the controller maintains the
PID value before auto-tuning. TZ Series supports 2 auto-
tuning modes.
Select TUN1 mode or TUN2 mode [
TUN1
,
TUN2
] from
auto-tuning mode [
AtT
] of parameter group 2.
※
Run auto-tuning during initial setup of the temperature
controller.
※
If the thermal characteristics of the control target device
has changed after extended usage, re-run auto-tuning.
TUN1
mode
[
TUN1
]
Auto-tuning based on SV
Temperature
Time
SV
Auto-tuning
TUN2
mode
[
TUN2
]
Auto-tuning based on 70% of SV
Temperature
Time
70%
SV
Auto-tuning
External terminal
(SV2 IN)
ON