Shinko ACS-13A-*A Series Instruction Manual

Page 1

INSTRUCTION MANUAL (EXCERPT) Digital Indicating Controller ACS-13A- /A

(For Use with the Infrared Temperature Sensor)

No.ACS11AE2 2017.04

Thank you for purchasing our digital indicating controller ACS-13A- /A. This manual contains instructions for the mounting, functions, operations and notes when operating the ACS-13A- /A. To prevent accidents arising from the misuse of this controller, please ensure the operator receives this manual.

Safety Precautions (Be sure to read these precautions before using our products.)

The safety precautions are classified into categories: “Warning” and “Caution”.

Warning: Procedures which may lead to dangerous conditions and cause death or serious injury, if not

carried out properly.

Caution: Procedures which may lead to dangerous conditions and cause superficial to medium injury or

physical damage or may degrade or damage the product, if not carried out properly.

Warning

• To prevent an electric shock or fire, only Shinko or other qualified service personnel may handle the inner assembly.

• To prevent an electric shock, fire or damage to the instrument, parts replacement may only be undertaken

by Shinko or other qualified service personnel.

Safety Precautions

• To ensure safe and correct use, thoroughly read and understand this manual before using this instrument.

• This instrument is intended to be used for industrial machinery, machine tools and measuring equipment. Verify correct usage after purpose-of-use consultation with our agency or main office. (Never use this instrument for medical purposes with which human lives are involved.)

• External protection devices such as protection equipment against excessive temperature rise, etc. must be installed, as malfunction of this product could result in serious damage to the system or injury to personnel. Also proper periodic maintenance is required.

• This instrument must be used under the conditions and environment described in this manual. Shinko Technos Co., Ltd. does not accept liability for any injury, loss of life or damage occurring due to the instrument being used under conditions not otherwise stated in this manual.

Caution with Respect to Export Trade Control Ordinance

To avoid this instrument from being used as a component in, or as being utilized in the manufacture of weapons of mass destruction (i.e. military applications, military equipment, etc.), please investigate the end users and the final use of this instrument. In the case of resale, ensure that this instrument is not illegally exported.

1. Model

ACS – 1 3 A / A , Series name: ACS-13A- /A (W48 x H48 x D62 mm) Control action 3 PID A1 A Alarm type can be selected by keypad. *1

R Relay contact: 1a S

Non-contact voltage (for SSR drive): 12 V DC 15%

Control output (OUT1)

A Direct current: 4 to 20 mA DC

Input A Direct current: 4 to 20 mA DC *2

100 to 240 V AC (standard)

Supply voltage

1 24 V AC/DC *3

A2 Alarm 2 output (A2) *1 W(20A) CT rated current: 20 A (Single-phase) W(50A) CT rated current: 50 A (Single-phase) W3(20A) CT rated current: 20 A (3-phase) W3(50A)

Heater burnout alarm

CT rated current: 50 A (3-phase)

Relay contact: 1a

Heating/Cooling control, Control output (OUT2)

Non-contact voltage:12V DC 15%

C5 Serial communication (RS-485)

Option (Multiple options are selectable.)

SM Set value memory external selection *1: Alarm types (9 types and No alarm action) and Energized/De-energized can be selected by keypad. *2: Infrared temperature sensor RD-500 series or RD-715-HA is used for an input. Temperature range for

the sensor (0.0 to 250.0 , 0.0 to 500.0 *, 32.0 to 482.0 , 32.0 to 932.0 *) is selectable by keypad. * For the RD-715-HA, ranges 0.0 to 500.0 and 32.0 to 932.0 are available.

*3: Supply voltage 100 to 240 V AC is standard. When ordering 24 V AC/DC, enter “1” after the input code.

The digital indicating controller ACS-13A- /A is an exclusive instrument for use with the infrared temperature sensor RD-500 series or RD-715-HA. For detailed usage and options, refer to the full Instruction manual for the ACS-13A (standard product). Please download the full Instruction manual for ACS-13A at http://www.shinko-technos.co.jp/e/

Support & Downloads Downloads Manuals

he ACS

13A

(standard product) has no infrared emissivity setting function,

d its input types are differen

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2. Name and Functions

(1) PV indicator: Lights up when PV is indicated in PV/SV display mode. (2) PV display: Indicates the PV (process variable) or setting

characters during setting mode. (3) SV indicator: Lights up when SV is indicated in PV/SV display mode. (4) MEMO indicator: Lights up when the Set value memory external

selection (SM option) is ordered. (5) MEMO display: Indicates the set value memory number. (6) SV display: Indicates the SV (desired value), MV (manipulated

variable) or each set value during setting mode. (7) Action indicators

O1 (OUT1): Lights up when control output (OUT1) is ON.

For Direct current output type, flashes corresponding to the MV in 250 ms cycles.

O2 (OUT2): Lights up when control output (OUT2) (D option) is ON. EV1: Lights up when Alarm 1 output is ON. EV2: Lights up when Alarm 2 output (A2 option) is ON or when Heater

burnout alarm (W, W3 option) is ON.

AT: Flashes while AT (auto-tuning) or auto-reset is performing. T/R: Lights up during Serial communication (C5 option) (TX output). LOCK: Lights up when Lock 1, Lock 2 or Lock 3 is selected.

(8) UP key: Increases the numeric value. (9) DOWN key: Decreases the numeric value. (10) Mode key: Switches setting mode, or registers the set value.

To register the set value (or selection), press this key.

(11) OUT/OFF key: Switches control output ON/OFF or Auto/Manual control.

(12) Console connector: By connecting to the USB communication cable (CMA, sold separately), the following

operations can be conducted from an external computer using the Console software SWS-ACS01M.

Reading and setting of SV, PID, various set values,2Reading of PV and action status,3Function change

3. Mounting to the Control Panel

3.1 Site Selection

Caution

Use within the following temperature and humidity ranges. Temperature: 0 to 50 (32 to 122 ), Humidity: 35 to 85 %RH (No icing and non-condensing)

If this unit is installed through the face of a control panel, the ambient temperature of the unit - not the ambient temperature of the control panel - must be kept to under 50 . Otherwise the life of electronic parts (especially electrolytic capacitors) of this unit will be shortened.

This instrument is intended to be used under the following environmental conditions (IEC61010-1): Overvoltage category , Pollution degree 2

Ensure the mounting location corresponds to the following conditions:

• A minimum of dust, and an absence of corrosive gases

• No flammable, explosive gases

• Few mechanical vibrations or shocks

• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 ) that does not change

rapidly, and no icing

• An ambient non-condensing humidity of 35 to 85 %RH

• No large capacity electromagnetic switches or cables through which large current is flowing

• No water, oil or chemicals or where the vapors of these substances can come into direct contact with the controller

3.2 External Dimensions (Scale: mm)

Gasket

Mounting frame

Terminal cover (sold separately)

(*) When Terminal cover (sold

separately) is used

(1)

(3) (4)

(7)

(6)

(8) (9)

(5)

(10)

(11)

(2)

(12)

(Fig. 2-2)

(Fig. 3.2-1)

(Fig. 2-1)

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3.3 Panel Cutout (Scale: mm)

Caution

If horizontal close mounting is used for the controller, IP66 specifications (Drip-proof/Dust-proof) may be compromised, and all warranties will be invalidated.

Lateral close mounting n: Number of units mounted

(Fig. 3.3-1)

3.4 Mounting to and Removal from the Control Panel

3.4.1 How to Mount the ACS-13A- /A

Mount the controller vertically to the flat, rigid panel to ensure it adheres to the Drip-proof/Dust-proof specifications (IP66).

Mountable panel thickness: 1 to 5 mm

(1) Insert the controller from the front side of the panel. (Fig.3.4.1-1)

(2) Insert the mounting frame until it comes into contact with the panel, and fasten with screws.

Tighten screws with one rotation upon the screw tips touching the panel. (Fig.3.4.1-2)

The torque is 0.05 to 0.06 N•m.

3.4.2 How to Remove the Mounting Frame and Unit (Fig. 3.4.2-1) (1) Turn the power to the unit OFF, and disconnect all wires before removing the mounting frame. (2) Insert a flat blade screwdriver between the mounting (screw) frame and unit1. (3) Slowly push the frame upward using the screwdriver2, while pushing the unit toward the panel3. (4) Repeat step (2) and slowly push the frame downward using the screwdriver for the other side.

The frame can be removed little by little by repeating these steps.

(Fig.3.4.1-1) Mounting (Fig.3.4.1-2) Mounting (Fig.3.4.2-1) Removal

4. Wiring

Warning

Turn the power supply to the instrument off before wiring or checking. Working on or touching the terminal with the power switched on may result in severe injury or death due to electrical shock.

Caution

• The terminal block of this instrument is designed to be wired from the left side. The lead wire must be inserted from the left side of the terminal, and fastened with the terminal screw. The torque should be 0.63 N•m.

• This instrument does not have a built-in power switch, circuit breaker or fuse. It is necessary to install a power switch, circuit breaker or fuse near the controller externally. (Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)

• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).

• For the input, use the infrared temperature sensor RD-500 series or RD-715-HA.

• When using a relay contact output type, externally use a relay according to the capacity of the load.

• When wiring, keep input wires away from AC sources or load wires.

+0.5

n x 48-3

+0.5

Gasket

Mounting frame

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Terminal cover

(sold separately)

CT1 input terminals

Power supply

Heater

(13) (14)

4.1 Terminal Arrangement

• EV1: Alarm 1 output

• EV2: Alarm 2 output (A2 option) or

Heater burnout alarm output (W, W3 option)

• O2: Control output (OUT2) (D option)

• O1: Control output (OUT1)

• DC: Direct current input (Infrared temperature

sensor RD-500 series, or RD-715-HA)

• CT1: Current transformer input 1 (W, W3 option)

• CT2: Current transformer input 2 (W3 option)

• DI: Contact input (SM option)

• RS-485: Serial communication (C5 option)

4.2 Lead Wire Solderless Terminal

Use a solderless terminal with an insulation sleeve in which an M3 screw fits as shown below. (Fig. 4.2-1) The torque should be 0.63 N•m.

4.3 When Using a Terminal Cover

When using a terminal cover (sold separately), pass terminal wires numbered 7 to 12 into the holes of the terminal cover. (Fig. 4.3-1)

Solderless

terminal

Manufacturer Model

Tightening

torque

Nichifu Terminal Industries CO., LTD. TMEV1.25Y-3

Y-type

Japan Solderless Terminal MFG CO., LTD. VD1.25-B3A Nichifu Terminal Industries CO., LTD. TMEV1.25-3

Ring-type

Japan Solderless Terminal MFG CO., LTD. V1.25-3

0.63 N•m

4.4 Heater Burnout Alarm (W, W3 option) Wiring This alarm is not usable for detecting heater current under phase control.

Use the CT (current transformer) provided, and pass one lead wire of the heater circuit into the hole of the CT. (Fig. 4.4-1). When wiring, keep the CT wire away from AC sources or load wires to avoid external interference. In the case of 3-phase (W3 option), pass any 2 lead wires of R, S, T into the CT, and connect them with CT1 (13, 14) and CT2 terminals (14, 15). (Fig. 4.4-2)

Pass any 2 wires of R, S and T into CT.

(Fig. 4.1-1)

(Fig. 4.4-1) (Fig. 4.4-2)

5.8

mm or less

(Fig. 4.2-1)

5.8

mm or less

3.2mm3.2

(Fig. 4.3-1)

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5. Operation Flowchart

Power ON

For 3 seconds after power-on, the PV display indicates the

temperature range of the infrared

temperature sensor, and the SV display indicatestemperature range high limit value.

PV/SV display mode(Automatic control)

Control output OFF: (Approx. 1 sec) Auto/Manual control: key

Control output OFF Manual control

+ + (Approx. 3 sec)

Main Setting Mode Sub Setting Mode Auxiliary Function Setting Mode

Temp. range low limit to Temp. range high limit

Set value lock

: Unlock : Lock 1 : Lock 2 : Lock 3

SV2

Temp. range low limit to Temp. range high limit

Auto-tuning/Auto-reset

AT/Auto-reset Cancel

/ :

AT/Auto-reset Perform

SV3

Temp. range low limit to Temp. range high limit

OUT1 proportional band

0.0 to 100.0%

SV4

Temp. range low limit to Temp. range high limit

OUT2 proportional band

0.0 to 10.0 times OUT1 proportional band

Unlock: All set values can be changed. Lock1: None of the set values can be changed. Lock2: Only main set mode can be changed. Lock3: All set values except input type can be

changed. However, changed values revert to their previous value after power-off because they are not saved in the non-volatile memory. Do not

change any setting item in Setup mode. If any item in Setup mode is changed, it will affect other setting items such as the SV and Alarm value.

Infrared emissivity

0.200 to 1.000

Integral time

0 to 1000 sec

Sensor correction

-100.0 to 100.0 ( )

Infrared emissivity 2

0.200 to 1.000

Derivative time

0 to 300 sec

Infrared emissivity 3

0.200 to 1.000

ARW

0 to 100%

Communication protocol

: Shinko protocol : Modbus ASCII

: Modbus RTU

Infrared emissivity 4

0.200 to 1.000

OUT1 proportional cycle

1 to 120 sec

30 sec (R/M), 3 sec (S/M)

Instrument number

0 to 95

OUT2 proportional cycle

1 to 120 sec

30 sec (DR), 3 sec (DS)

(Approx. 3 sec)

Alarm 1 value

Setting range: See Table 5-1.

Communication speed

: 2400 bps : 4800 bps : 9600 bps : 19200 bps

Output MV indication

Alarm 2 value

Setting range: See Table 5-1.

Heater burnout alarm value

0.0 to 20.0A (Rated current: 20A)

0.0 to 50.0A (Rated current: 50A)

Data bit/Parity

: 8-bits/No parity : 7-bits/No parity : 8-bits/Even : 7-bits/Even : 8-bits/Odd : 7-bits/Odd

Heater burnout alarm 2 value

0.0 to 20.0A (Rated current: 20A)

0.0 to 50.0A (Rated current: 50A)

Stop bit

: 1 : 2

Heater burnout alarm:

CT1 current value and character

are indicated alternately. Setting the value to 0.0 disables the alarm.

Heater burnout alarm 2:

CT2 current value and characters

are indicated alternately. Setting the value to 0.0 disables the alarm.

nfrared emissivity setting

: Setting

characters and PV are indicated alternately. (Same as Infrared emissivity 2-4)

Abbreviation:

Temp.:

Temperature

Page 6

High limit alarm

High/ Low limits alarm

Low limit alarm

Alarm action

High/ Low limit range alarm Process high alarm

Process low alarm

High limit with standby alarm

High/Low limits with standby alarmLow limit with standby alarm

OFF

A 1 hysteresis

OFF

A 1 hysteresis

OFF

A 1 hysteresis

OFF

A 1 hysteresis

A1 value

OFF

A 1 hysteresis

OFF

A 1 hysteresis

OFF

A 1 hysteresis

OFF

A 1 hy steresis

OFF

A 1 hysteresis

: Alarm output is in standby.

A1 value

A1 value A1 value

A1 value

A1 value A1 value

Characters Used in this Manual:

Indication

Number, / -1 0 1 2 3 4 5 6 7 8 9

Indication

Alphabet A B C D E F G H I J K L M

Indication

Alphabet N O P Q R S T U V W X Y Z

[Infrared Emissivity Setting]

If the surface temperature and controller indication value do not match in the high temperature range, control can be performed by adjusting the temperature to the desired level via the infrared emissivity setting.

• Setting range: 0.200 to 1.000 (Default: 0.900)

[Emissivity]

Emissivity is the ratio between the energy amount radiated from the black body (or an object which has a perfect radiation) at a certain temperature and the energy amount radiated from any object at the same temperature. Therefore the easier the infrared ray is to be radiated, the higher the emissivity value becomes. The more difficult the infrared ray is to be radiated, the lower the emissivity value. For objects such as organic substances or ceramics, emissivity is so high that high accuracy measurement and control are possible. On the contrary, for the highly lustrous metals or other objects with low emissivity, its emissivity is greatly affected by reflection. In this case, by attaching black body tape to the surface of those objects, the emissivity can be increased, from which high accuracy measurement and control can be derived.

Emissivity of Main Objects

Object Emissivity Object Emissivity Object Emissivity

Concrete 0.94 Brick (Red) 0.93 to 0.96 Painted lacquer 0.80 to 0.95 Water 0.92 to 0.96 Fabric (Black) 0.98

Painted lacquer (Lusterless black)

0.97

Ice 0.92 to 0.98 Human skin 0.98 Rubber (Black) 0.94 Paper 0.70 to 0.94 Iron oxide 0.78 to 0.82 Plastic 0.85

(Table 5-1) Alarm 1 and 2 Value Setting Range

Alarm type Setting range

High limit alarm -(Temperature span) to temperature span ( ) Low limit alarm -(Temperature span) to temperature span ( ) High/Low limits alarm 0 to temperature span ( ) High/Low limit range alarm 0 to temperature span ( ) Process high alarm Temp. range low limit to temp. range high limit

Setting the value to 0 or 0.0 disables the alarm. (Except Process high alarm and Process low alarm)

Process low alarm Temp. range low limit to temp. range high limit Abbreviation: High limit with standby alarm -(Temperature span) to temperature span ( ) Temp: Temperature Low limit with standby alarm -(Temperature span) to temperature span ( ) High/Low limits with standby alarm 0 to temperature span ( )

(Table 5-2) Alarm 1 Type Selection [ ] (Default: : No alarm action)

“A1” means Alarm 1. For Alarm 2, read “A2” for “A1”.

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PV display indicates setting item characters, and SV display indicates factory default.

Setting items with dotted lines are optional, and they appear when the options are ordered. Key operation (Use the or key to set or select each setting item.)

• If the key is held down for 3 seconds at any setting mode, the unit will return to PV/SV display mode.

• : This means that if the key is pressed, the unit proceeds to the next setting mode.

• + :: Press and hold the and key (in that order) together.

• + (Approx. 3 sec): Press and hold the and key (in that order) together for 3 seconds.

• + (Approx. 3 sec): Press and hold the and key (in that order) together for 3 seconds. + (Approx. 3 sec)

Setup Mode

Alarm2

Energized/De-energized

: Energized

: De-energized

OUT/OFF Key function

: Control output OFF : Auto/Manual control

Temperature range

: 0.0 to 250.0 : 0.0 to 500.0 * : 32.0 to 482.0 : 32.0 to 932.0 *

PV filter time constant

0.0 to 10.0 sec

Alarm 1 hysteresis

0.1 to 100.0 ( )

OUT1 high limit

OUT1 low limit to 100%

OUT1 low limit to 105% (A/M)

Alarm 2 hysteresis

0.1 to 100.0 ( )

Backlight selection

: All backlit : PV display backlit

: SV display backlit : Indicators backlit : PV+SV display backlit : PV+ Indicators backlit : SV+ Indicators backlit

OUT1 low limit

0% to OUT1 high limit

-5% to OUT1 high limit (A/M)

Alarm 1 delay time

0 to 10000 sec

OUT1 ON/OFF hysteresis

0.1 to 100.0 ( )

Alarm 2 delay time

0 to 10000 sec

SV rise rate

0.0 to 1000.0 /min.( /min.)

PV color

: Green : Red : Orange : Alarm 1 orAlarm 2: ON

Green Red

: Alarm 1 orAlarm 2: ON

Orange Red :PV continuous change :PV continuous change

+ Alarm 1 or Alarm 2 ON (Red)

OUT2 cooling mode

: Air cooling : Oil cooling

: Water cooling

OUT2 high limit

OUT2 low limit to 100%

SV fall rate

0.0 to 1000.0 /min.( /min.)

PV color range

0.1 to 100.0 ( )

OUT2 low limit

0% to OUT2 high limit

Direct/Reverse control

: Reverse (Heating) : Direct (Cooling)

Backlight time

0 to 99 min. (0 minutes: Continuous)

Overlap/Dead band

100.0 to 100.0 ( )

SVTC bias

Converted value of 20% of temperature range

Indication when output OFF

: OFF indication : No indication : PV indication : PV+ Alarm output

OUT2 ON/OFF hysteresis

0.1 to 100.0 ( )

OUT1 rate-of-change

0 to 100 %/sec

Alarm 1 type

Selection item: SeeTable

5-2.

Contact input function

: Set value memory

external selection

: OUT/OFF external

selection 1 (SV, SV2 switchable)

: OUT/OFF external

selection 2

Alarm 2 type

Selection item: SeeTable

5-2.

* Temperature range:

For the RD-715-HA, ranges

0.0 to 500.0 and 32.0 to

932.0 are available.

Alarm1

Energized/De-energized

: Energized

: De-energized

Output status when input errors occur

: Outputs OFF(4mA) or

OUT1(OUT2) low limit

: Outputs a value between OFF(4mA) and ON(20mA) or between OUT1 (OUT2) lowlimit and OUT1 (OUT2) highlimit value depending on a deviation.

Page 8

6. Operation

After the unit is mounted to the control panel and wiring is completed, operate the unit following the procedure below.

(1) Turn the power supply to the ACS-13A- /A ON. (2) Set up the unit. (Refer to “5. Operation flowchart”.) Setup (setting the Input type, Alarm type, Direct/Reverse control,

etc.) should be done before using this controller, in Setup mode. If the user’s specifications are the same as the factory

default of the ACS-13A- /A, it is not necessary to set up the controller. Proceed to Step (3).

(3) Input each set value. Input each set value. Refer to “5. Operation flowchart” and “7. Basic settings”. (4) Turn the load circuit power ON. Control action starts so as to keep the control target at the SV.

7. Basic Settings

Main Setting Mode (When setting SV to 100 ) Auto-tuning Perform/Cancel (PID control)

(1)

Proceed to Main setting mode.

Press the key in PV/SV display mode. The unit proceeds to Main setting mode.

(1)

Proceed to Sub setting mode.

Press the key while pressing the

key in PV/SV display mode.

The unit proceeds to Sub setting mode.

(2)

Set SV.

Set SV with the or key.

(2)

Select AT Perform/Cancel.

Select AT Perform with the key, or select AT Cancel with the key.

(3)

key. The unit reverts to PV/SV

display mode.

(3)

Confirm AT Perform/Cancel.

Press the key. The unit reverts to PV/SV display mode.

(4)

Control starts.

Control starts so as to keep the measuring temperature at 100.0 .

(4)

AT Perform/Cancel

While AT is performing, the AT indicator flashes, and it turns off if AT is cancelled.

8. Specifications

Supply voltage: 100 to 240 V AC 50/60 Hz, 24 V AC/DC 50/60 Hz Allowable voltage fluctuation: 100 to 240 V AC: 85 to 264 V AC, 24 V AC/DC: 20 to 28 V AC/DC Accuracy (Setting, Indication): Within 0.2% of temperature span 1 digit Control output (OUT1):

Relay contact: 1a, Control capacity: 3 A 250 V AC (resistive load)

1 A 250 V AC (inductive load cos =0.4), Electrical life: 100,000 cycles Non-contact voltage (for SSR drive): 12 V DC 15%, Max. 40 mA DC (short circuit protected) Direct current: 4 to 20 mA DC, Load resistance: Max. 550

Alarm 1, Alarm 2 (A2 option), Heater burnout alarm output (W, W3 option):

Relay contact 1a, Control capacity: 3 A 250 V AC (resistive load), Electrical life: 100,000 cycles

Control output (OUT2) (D option):

Relay contact 1a, Control capacity: 3 A 250 V AC (resistive load), Electrical life: 100,000 cycles Non-contact voltage (for SSR drive): 12 V DC 15%, Max. 40 mA DC (short circuit protected)

Contact input: Circuit current when closed: Approx. 12 mA Power consumption: Approx. 8 VA Ambient temperature: 0 to 50 (32 to 122 ) Ambient humidity: 35 to 85 %RH (No icing and non-condensing) Weight: Approx. 120 g

Accessories included: Instruction manual: 1 copy, Mounting frame: 1 piece

Gasket (Front mounted to the ACS-13A- /A): 1 piece CT (Current transformer):

CTL-6S: 1 piece [W (20 A) option], 2 pieces [W3 (20 A) option] CTL-12-S36-10L1U: 1 piece [W (50 A) option], 2 pieces [W3 (50 A) option]

Accessories sold separately: Terminal cover

, ，

SHINKO TECHNOS CO., LTD.

OVERSEAS DIVISION

Head Office: URL: E-mail:

2-5-1, Senbahigashi, Minoo, Osaka, Japan

http://www.shinko-technos.co.jp/e/

overseas@shinko-technos.co.jp

Tel : Fax:

+81-72-727-6100 +81-72-727-7006

• In order to decide each P, I, D and ARW value automatically, the auto-tuning process has been made to fluctuate to get an optimal value.

• Sometimes the auto-tuning process will not fluctuate if auto-tuning is performed at or near room temperature. Therefore auto-tuning might not finish normally.

• Auto-reset is available for P or PD action. Auto-reset is cancelled in approx. 4 minutes. It cannot be released while performing this function.