Auber Instruments WS-1510DPM Guía del administrador

Operation Instruction Manual

WS-1510DPM

Precision PID Temperature Controller

Version 1.5 (Oct, 2019)

Auber Instruments

5755 North Point Parkway, Suite 99

Alpharetta, GA 30022

770-569-8420

www.auberins.com

Introduction

Thank you for shopping the Auber WS series temperature controller. We sincerely appreciate

your decision and trust that our controller will meet your expectations in both the quality of the

result and the value of the product. While we are delighted that you may be anxious to operate

the controller, please still spend a few minutes reading through this manual because this will

serve to enhance your experience in the months and years ahead. In particular, we urge you to

read through the safety warnings below. Although this plug-and-play controller is very easy to

use, the process involves high temperature and high wattage appliances and your safety is

paramount.

SAFETY WARNINGS

•This controller is designed only to be used with limited-power device and paring thermal

cutoff protection such as a thermostat or thermal.

•Do not place any objects on the top of controller surface because that may prevent

venting excess heat during its operation.

•The controller can handle a maximum current up to 15 Ampere. For 120 VAC in US or

Canada, this limits the heater power to 1800 watts. Due to its compact size and the

splash proof design for kitchen applications, the controller has a limited ability to dissipate

the heat generated by the internal solid state relay during the initial heat up. The initial full

power heat up process cannot be more than 90 minutes. If you system need take longer

time to warm up, please read Appendix 1 “Managing the heat generated by the

controller”

•Always place the sensor in the controlled subject when the controller is on. Before

turning on the controller, please make sure the sensor is placed inside the container to be

controlled. Leaving the sensor outside will form an open loop operation. If the sensor is

left outside, the controller will assume the temperature is low even if the controlled

subject is already very hot. The controller will provide full power to the heater. It will not

only overheat the controller, but also damage your appliance or even cause a fire. If the

sensor is not permanently mounted on the system and left outside of the system, there is

a potential problem. You should enable the open loop alarm function (see page 11 for

details).

•This controller is designed to control the devices recommended by Auber Instruments

only. Using it to control a not recommended device can be dangerous and even cause fire.

Auber Instruments is not liable for damages caused by misuse of the controller. If you are

not sure the controller can be used, please contact Auber Instruments before usage.

•If an abnormal display or noise is observed, turn the controller off, unplug the power cord

and contact the manufacturer before using it again.

•Clean the controller only when it is cool and unplugged.

•Do not allow children to operate the controller.

Specifications

Input voltage: 100 to 240 VAC 50 /60 Hz.

Output voltage: The same as input voltage.

Maximum Current: 15A at 120V, 12A at 240V

Fuse Size: 15A fast blow fuse.

Control Action: Heating (reversed action) or cooling (direct action)

Control Mode:PID, PI, PD, P or on/off.

Output switching device: Built-in optically isolated solid state relay (SSR) with zero

voltage crossing switching.

Sensor type: K type thermocouple

Alarm: High limit alarm and open loop alarm with LED and buzzer.

Timer Range: 1 to 9999 minutes for each step. 6 steps total.

Temperature resolution: 1 °C or 1 °F.

Temperature display range: 500 °C (900 °F) (limited by K type thermocouple temperature

sensor)

Temperature resolution: ±1°C (±1°F).

Dimension (W x H x D): 6 x 3 x 8.3 inch (155 x 80 x 210 mm).

Weight: 3.2 lb (1.5 kg).

Warranty: 1 year for controller. 90 days for sensor.

Operating Instructions

1. Controller

Figure 1. Front Panel.

The front panel of the controller is shown in Figure 1. The function of each item is described

below:

(1) Parameter Window (LED) - For displaying temperature values and controller's system

parameters.

(2) Output status indicator - In normal mode, this LED indicates the heater status. When it is on

(lit), the heater is powered. When it is off, the heater power is off. When it is flashing, it means the

heater is on and off intermittently to reduce the power output. It should be synchronized with the

power light on the cooking device.

(3) SET Key - For showing current temperature settings, entering parameters setting mode and

confirming various actions taken.

(4) “+” Key - To increase the value at parameter setting mode; toggle LED display between the

current temperature and the current step number at normal operating mode.

(5) “-” Key - To decrease the value at parameter setting mode.

(6) Time Key - To toggle the LED display between the current temperature and the total running

time at the normal operating mode.

(7) Alarm indicator - Lit when the alarm is on.

(8) Timer status indicator – Lit when Time key is pressed.

(9) Editing indicator – A dot at the lower right corner. When the dot flashing, the value is

editable; pressing the “+” or “-“ key to change the value.

The layout of the controller back panel is shown in Figure 2.

Figure 2. Back Panel.

2. Connecting the controller

Figure 3. Typical connection between the controller and the device (in this example it is a

cooker).

A schematic wiring diagram of the controller and the device to be controlled is shown in Figure 3.

The connection of the controller with the device and the sensor should be done with the following

steps:

•Plug the sensor into the sensor port on the back of the controller.

•Plug the power cord from controller into the power outlet.

•Flip the power switch to turn on the controller. The LED display will show “8.8.8.8.” for 2

seconds and then display the current temperature. Then turn off the controller.

•Plug the power cord from the device (heater/cooker/smoker) to the output socket on the

back of the controller. If the load has a power switch, please make sure the switch is in

“off” position.

•Place the sensor inside the camber or container to be controlled.

•Turn on the controller.

•Turn on the device.

Remark: The connector of sensor contains a slot for pin-connect alignment. It also has a spring

lock to prevent disconnections from accidental pulling on the cable. The following pictures show

how to install and remove it.

Figure 3. How to install the sensor.

Figure 4. How to remove the sensor.

3. Programming the temperature profile.

A total of 6 steps can be programmed for this controller. Each step contains the temperature (C-X)

and time duration (t-X) setting. They are represented by the symbol C-X and t-X, where “X” is the

step number (e.g. temperature value of Step 4 is represented by C-4 and time value of step 4 is

represented by t-4). The character, “t”, is displayed as the symbol, “T”. Time is defined as the

duration between the last step and the next step. Please make sure the time is long enough for

the heater to heat up the oven. If the time is set too short, the temperature may not be able to

reach set temperature, before it jumps to the next step. The time unit is in minutes with 1 minute

resolution. If the recipe only needs one step, you can program the time of the rest of the steps to

zero.

To program the temperature profile, press SET key once. The display will show C-1 for one

second and then display the temperature setting for step 1. Use “+” and “-” keys to change the

setting. When finished, press the SET again to confirm the change. The display will show t-1 for a

second and then change to the time setting for step 1. Use “+” and “-” keys to change the setting.

When finished, press the SET again to confirm the change. The display will go to the step 2

setting. The following is the flow chart (Figure 6) for the setting procedure.

The temperature setting will not be changed if SET key is not pressed (confirmed). After

programming the necessary cooking steps, you can finish programming by pressing the SET

repeatedly until the display passes t-6 and displays the current temperature. You can also leave

the controller alone. The display will return to the normal display mode if no key is pressed within

15 seconds.

080 C-1 120

T-1 20

C-2 190

T-2 20

T-6 0

SET

T-3 300

SET SET

C-3 130

SET SET

Figure 5. Temperature profile programming flow chart.

Here is the one step heating program. The temperature profile is programmed to start at 150 °F

for 600 minutes of heating.

Table 1. Initial program setting.

Step #

Temp

(F)

Step #

Time

(min)

C-1

150

t-1

600

C-2

t-2

C-3

t-3

C-4

t-4

C-5

t-5

C-6

t-6

4. Checking the current step and the time

The user can check step number, total running time, and the time in the current step using the

“Time” or “+” key. Please see the flow chart in Figure 7.

080 10

P 2

Time Total operating time

since power up

Press

once

Press

once Operating time

on current step

P-1

Press

once

Current step

Time

Press

once

Current temp.

reading

Figure 7. How to check current step and the time.

At normal operating mode, press the “+” key (item 4 in Figure 1) to toggle the display window

between the current temperature and the current step number at which the program is running

(P-X). At time displaying mode, press the “Time” key to toggle the display between the total time

(in minutes) since the controller was powered up and the time past in the current step. For

example, the controller has being running for 100 minutes in total, but currently it is at step 2 for

40 minutes. So when you first press “+” key, controller will show “P-2” in the window. If then you

press “Time” key, the controller will show “P 40” with the Time Indicator lit.

At normal operating mode, press the “Time” key (item 6 in Figure 1) once to toggle the LED

window between the current temperature and the total time (in minutes) since the controller was

powered up. The Time Indicator (item 8 in Figure 1) will lit at same time. When the time is being

displayed, press the “+” key will toggle the display between the total running time and the running

time of the current step. For example, the controller has being running for 100 minutes in total,

but currently it is at step 2 for 40 minutes. So when you first press “Time” key, controller will show

“100” in the window with the Time Indicator lit. If then you press “+” key, the controller will show

“P 40” while the Time Indicator still lit.

5. System configuration parameters

This section discusses how to configure the controller for a specific application. For most sous

vide cooking users, there is no need to read this section. The controller’s default setting is for

most common configurations of sous vide cooking.

5.1 The first group of parameter is related to the control performance. They need to be

adjusted based on your application. Table 2 shows the list of these parameters, their range and

initial set value.

Table 2. List of control parameters and its initial settings under code 166.

Symbol

Display

Description

Range

Initial

Proportional Band

0-9999

Integral Const. (Sec.)

0-9999

600

Derivative Const. (Sec.)

0-9999

150

Auto-tune

0=off, 1=on

Cycle Rate (Sec.)

2-9999

Details about each parameter

•P, Proportional band. It is in 1 degree units. This parameter controls the output of the

controller based on the difference between the measured and set temperatures. The

larger the P number means the weaker the action (lower gain). For example, if P=7, the

proportional band is 7 degrees. When the sensor temperature is 7 degrees below the

proportional band (7 degrees below the setting), the controller will have 100% output.

When the temperature is 5 degrees below the set point, the output is 71%. When the

temperature is equal to the setting, the controller will have 0% output (assuming integral

and derivative functions are turned off). This constant also affects both integral and

derivative action. Smaller P values will make both integral and derivative action stronger.

Please note the value of the P is temperature unit sensitive. If you found an optimized P

value when operating the controller in Fahrenheit, you need to divide the P by 1.8 when

changing the temperature unit to Celsius.

ON/OFF mode. If P = 1, I = 0, D = 0, the control mode will be changed from PID mode to

ON/OFF mode. ON/OFF mode should be used for controlling an external relay, a

solenoid valve, or a compressor of freezer. You also need to set the hysteresis band/dead

band for the on/off mode. Parameter P will be used as hysteresis band. In ON/OFF mode,

Integral and Derivative parameters are not valid.

•I, Integral time. The unit is in seconds. This parameter controls the output of controller

based on the difference between the measured and set temperature integrated with time.

Integral action is used to eliminate temperature offset. Larger number means slower

action. e. g. assuming the difference between the measured and set temperature is 2

degrees and remain unchanged, the output will increase continuously with time until it

reaches 100%. When temperature fluctuate regularly (system oscillating), increase the

integral time. Decrease it if the controller is taking too long to eliminate the temperature

offset. When I=0, the system becomes a PD controller. For very slow response system

such as slow cooker and large commercial rice cooker, set I = 0 will significantly reduce

the temperature overshoot.

•d, Derivative time. The unit is in seconds. Derivative action contributes the output power

based on the rate of temperature change. Derivative action can be used to minimize the

temperature overshoot by responding its rate of change. The larger the number is, the

faster the action will be, e.g. when the door of oven is opened, the temperature will drop

at very high rate. The derivative action change the controller output based on the rate of

change rather than the net amount of change. This will allow the controller to act sooner.

It will turn the heater to full power before the temperature drops too much.

•AT, Auto-tuning. Every type of cooker has its own unique set of tuning parameters. For

heating stability, it should have programmed with the tuning parameters for the cooker

currently being used.

You should always write down your old PID parameters, before auto-tuning the controller.

So if something goes wrong, you can always restore your previous PID parameters.

Basically, you must setup your cooking system close to your actual cooking environment.

E.g, the water you use for auto-tune should be the same as your normally use.

To activate auto-tuning, please set AT to 1; then exit the menu. The display will start to

flash alternately between AT and the current reading temperature, indicating the

auto-tuning is in progress. When the display stops flashing, the auto-tuning is finished.

The newly calculated PID parameters are set and ready to use. The new parameters will

store in the memory even when the controller is rebooted.

The duration of auto-tuning depends on how fast the system is responding to the heating

and cooling cycle. If the temperature of the cooker takes a long time to drop when the

heater is off, the auto-tuning could be a very long tuning process, such as a well-insulated

cooker. The auto-tuning should be able to tune most of your chosen

heaters/smokers/cookers with great results.

•t, cycle rate. The unit is in seconds. This unit determines how long for the controller to

calculate each action. For example, if T is set to 10 seconds, when the controller decides

the output should be 10%, it will turn on the heater 1 second for every 10 seconds. This

parameter should set at 2 second for heating with an electric heater. When controlling a

solenoid valve or a compressor of refrigerator, the T should be set to 10-20 to reduce the

frequency of on/off.

This group of parameters can be accessed by input code 166. Figure 6 is the flow chart that

shows how they can be changed. Press and hold SET key for 3 seconds until LED displays

“LoCK.” Then release the SET key. The display will show “0”. To get into parameters setting

mode, you need to key in the pass code. Use “+” and “-“keys to adjust the display to 166 and

press SET. The LED will show “P” for a second and then its P setting value, Use “+” and “-” keys

to change the setting. When finished, press the SET again to confirm the change. The display

will show the “I “ for a second and its I setting value next, use the same “P” setting procedure to

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