hawco AC2-5 Two Stage Thermostat Instruction Manual

1

2

AC2-5 INSTRUCTIONS FOR USE  

■ To eliminate the error indication and return to the normal mode, press button  

Control improvement  

■ To reduce overshoot, reduce the integral action reset 1AR  

■ To increase the response speed of the system, reduce the proportional band 1PB. Caution: doing this makes the system less stable.  

■ To reduce swings in steady-state temperature, increase the integral action time 1IT; system stability is thus increased, although  

its response speed is decreased.  

■ To increase the speed of response to the variations in temperature, increase the derivative action time 1DT. Caution: a high  

value makes the system sensitive to small variations and it may be a source of instability.  

.

TECHNICAL DATA  

REF; HEA Refrigerating control (REF) or heating control mode (HEA) for the auxiliary output.  

2CH  

2HY  

2T0  

Thank you for having chosen a LAE electronic product. Before installing the instrument, please read these instructions carefully  

to ensure maximum performance and safety.  

0...19.9°  

Differential of thermostat 2. With 2HY=0 the auxiliary output always remains off.  

Power supply  

AC2-5...L* 7...30 Vdc / 12Vac ±10%, 3W  

AC2-5...W 100...240Vac±10%, 50/60Hz, 3W  

* = in the AC2-5…L version, the power supply  

of the controller and of the loads must be  

of type SELV or PELV.  

0...30min  

Minimum ON time.  

DESCRIPTION  

INDICATION  

After output 2 has been turned ON, it remains active for 2T0 minutes regardless of the  

temperature value measured.  

0...30min  

ON/OFF  

Minimum OFF time (the following parameter will be 2PF).  

After output 2 has been turned OFF, it remains inactive for 2T1 minutes regardless of the  

temperature value measured.  

2T1  

2PF  

1

2

= Channel 1 output  

= Alarm  

= Tap  

CONFIGURATION PARAMETERS  

Relay outputs (AC2-5..R..)  

= Channel 2 output  

= View in °C or °F  

Auxiliary output state in case of probe failure.  

OUT1  

3,6 FLA, 21,6 LRA 240Vac - 12A resistive  

DC30 10A  

PAR  

UM  

RANGE DESCRIPTION  

NON;  

ABS;  

REL  

Alarm threshold management.  

ATM  

c; F; Non  

Unit of measure for control. Non is available in the models AC2-5A and AC2-5I.  

= Hold  

OUT2  

1 FLA, 6 LRA, 240V - 7A resistive  

DC30 5A  

NON: all temperature alarms are inhibited (the following parameter will be SB).  

ABS: the values programmed in ALA and AHA represent the real alarm thresholds.  

REL: the values programmed in ALR and AHR are alarm differentials referred to 1SP and 1SP+1HY.  

r01; r1  

Resolution of measure: r01=0.1°; r1=1°. This parameter is not available when UM=F and  

in the model AC2-5J.  

RES  

Fig.1 - Front panel  

SSR drive (AC2-5..M..)  

-50°...SPH Minimum limit for 1SP setting  

SPL  

SPH  

1SP  

1CM  

ON  

ON  

OUT1  

15mA 12Vdc  

SPL...150° Maximum limit for 1SP setting.  

T[°]  

T[°]  

OFF  

OFF  

INSTALLATION  

Inputs  

see table of input specifications  

SPL... SPH Setpoint (value to be maintained in the room).  

1SP 1SP+1HY+AHR  

1SP-ALR  

1SP+AHR  

1SP-1HY-ALR  

1SP  

■ Insert the controller through a hole measuring 71x29 mm;  

■ Make sure that electrical connections comply with the paragraph “wiring diagrams”. To reduce the effects of electromagnetic  

disturbance, keep the sensor and signal cables well separate from the power wires.  

HY; PID  

Control mode.  

Temperature alarm with relative thresholds,  

refrigerating control (ATM=REL, 1CH=REF)  

Temperature alarm with relative thresholds,  

heating control (ATM=REL, 1CH=HEA).  

With 1CM=HY you select control with hysteresis: parameters 1HY, 1T0 and 1T1 are used.  

With 1CM=PID you select a Proportional-Integral-Derivative control mode: parameters 1PB, 1IT,  

1DT, 1AR, 1CT will be used  

Measurement range  

see table of input specifications  

■ Fix the controller to the panel by means of the suitable clips, by pressingly gently; if fitted, check that the rubber gasket adheres  

to the panel perfectly, in order to prevent debris and moisture infiltration to the back of the instrument.  

■ ATTENTION: during the setup of the controller, please make sure that the parameter INP matches the sensor used, as indicated  

in the table “input specifications”.  

-50°...AHA Low temperature alarm threshold.  

ALA  

REF; HEA Refrigerating (REF) or Heating (HEA) control mode.  

0...19.9° OFF/ON thermostat differential. With 1HY=0 the output is always off.  

1CH  

Measurement accuracy  

ALA...150° High temperature alarm threshold.  

AHA  

ALR  

AHR  

see table of input specifications  

1HY  

■ Place the probe T1 inside the room in a point that truly represents the temperature of the stored product.  

ON  

ON  

-12.0...0°  

0...12.0°  

Low temperature alarm differential.  

With ALR=0 the low temperature alarm is excluded.  

Operating conditions  

-10 … +50°C; 15%...80% r.H.  

High temperature alarm differential.  

OFF  

OFF  

OPERATION  

With AHR=0 the high temperature alarm is excluded.  

Reference Norms  

EN61000-6-1  

EN61000-6-3  

EN60730-1  

EN60730-2-9  

1SP 1SP+1HY T[°]  

ON/OFF refrigerating control  

1SP-1HY 1SP  

T[°]  

0...120min Delay before alarm temperature warning.  

NO/YES Stand-by button enabling.  

ATD  

ON/OFF heating control  

DISPLAY  

(1CM=HY, 1CH=REF)  

(1CM=HY, 1CH=HEA)  

During normal operation, the display shows either the temperature measured or one of the following indications:  

SB  

0...30 min Minimum ON time.  

1T0  

1T1  

1PB  

0mA/4mA, Sensor input selection (see table of input specifications).  

T1/T2  

Controller in stand-by  

In tuning: timeout1 error  

INP  

RoHS Directive 2015/863/EU  

REACH Directive 2021/979/EU  

After output 1 has been turned ON, it remains active for 1T0 minutes regardless of the  

temperature value measured.  

ST1/SN4  

In the models AC2-5A..., AC2-5J..., AC2-5T... only.  

Probe T1 overrange or failure  

Room high temperature alarm  

Room low temperature alarm  

In tuning: timeout2 error  

0...30 min Minimum OFF time (the following parameter will be 1PF).  

After output 1 has been turned OFF, it remains inactive for 1T1 minutes regardless of the  

temperature value measured.  

-19.9...RHI Minimum range value (in the models AC2-5A…, AC2-5I… only)  

RLO  

RHI  

Front Protection  

IP54 by fitting our 0GUARNIZ.R11 front gasket  

In tuning: overrange error  

In tuning: device not configured correctly  

Controller in autotuning  

RLO takes the minimum value measured by the transmitter (i.e. the value matching 0V, 0/4mA).  

RLO...99.9 Maximum range value (in the models AC2-5A…, AC2-5I… only)  

0...19.9°  

Proportional band width.  

RHI takes the maximum value measured by the transmitter (i.e. the value matching 1V, 20mA)  

Overshoot  

Steady-state error  

-12.5...12.5° Probe T1 offset.  

OS1  

TLD  

SIM  

Temperature control takes place by changing the  

ON time of the output: the closer the temperature  

to the setpoint, the less time of activation. A small  

proportional band increases the promptness of  

response of the system to temperature variations,  

1SP  

1...30min  

0...100  

Delay for minimum temperature (TLO) and maximum temperature (THI) logging.  

Display slowdown.  

1PB  

SETTING  

Process  

temperature  

1...255  

AC2-5 address for communication with a PC.  

ASCII and RTU Modbus protocol selection.  

but tends to make it less stable.  

A

purely  

ADR  

PRT  

proportional control stabilises the temperature  

within the proportional band but does not cancel  

the deviation from setpoint.  

ASC;  

RTU  

Confirm  

Next  

Confirm  

Time  

With 1PB=0 the output is always off.  

blink  

Increase  

Decrease  

Discard  

Overshoot  

0...999s  

Integral action time.  

1IT  

or  

or  

INPUT SPECIFICATIONS  

Previous  

Discard  

The steady-state error is cancelled by inserting an  

integral action. The integral action time, determines  

the speed with which the steady-state temperature  

is achieved, but a high speed (1IT low) may be the  

cause of overshoot and instability in the response.  

With 1IT=0 the integral control is disabled.  

1SP  

RANGE [MEASUREMENT ACCURACY]  

MODEL  

AC2-5A...  

AC2-5I...  

INPUT  

RES = r01 (UM = c)  

RES = r1 (UM = c)  

RES = r1 (UM = F)  

1PBx1AR%  

integral control  

action area  

1PB  

0÷1V  

RLO÷RHI [< ± 3mV]  

---  

Process  

temperature  

INP = 0mA  

0÷20mA  

4÷20mA  

TC “J”  

Instant probe 1 temperature  

Minimum temperature recorded  

Maximum temperature recorded  

Keypad state lock  

RLO÷RHI [< ± 0.2mA]  

-50÷750°C [ < ±3°C ]  

---  

Time  

INP = 4mA  

INP=T1  

0...999s  

Derivative action time.  

1DT  

Overshoot  

---  

---  

AC2-5J...  

AC2-5P...  

-60÷999°F [ < ±5°F ]  

1SP  

Response overshoot may be reduced by inserting  

a derivative Action. A high derivative action (1DT  

high) makes the system very sensitive to small  

temperature variations and causes instability. With  

1DT=0 the derivative control is disabled.  

INP=T2  

TC “K”  

-50÷999°C [ < ±3°C ]  

Auto-tuning  

-50/-19.9÷99.9/150°C  

[ < ±0.3°C ]  

-100÷850°C  

[<±1°C(-50÷850°), ±2°C]  

-150÷999°F  

[<±2°F(-60÷999°), ±4°F]  

Keypad Lock  

PT100  

Configuration menu password  

1PB  

Process  

temperature  

Confirm  

Discard  

-50/-19.9 ÷ 99.9/150°C  

[<±0.3°C(-30÷130°),±1°C] [<±0.3°C(-30÷130°), ±1°C] [< ±0.6°F(-20÷260°),±2°F]  

-50 ÷ 150°C  

-60 ÷ 300°F  

INP=ST1  

INP=SN4  

LAE QT1..  

LAE SN4..  

AC2-5T...  

-50/-19.9 ÷ 99.9/125°C -50 ÷ 125°C -40 ÷ 260°F  

[<±0.3°C(-40÷100°),±1°C] [<±0.3°C(-40÷100°), ±1°C] [<±0.6°F(-40÷210°), ±2°F]  

Time  

Reset temperature recorded  

RESET  

0...100%  

1...255s  

Reset of integral action time referred to 1PB  

Decreasing the parameter 1AR reduces the integral control action zone, and consequently the  

overshoot (see figure on paragraph 1IT).  

1AR  

1CT  

Confirm  

Discard  

WIRING DIAGRAMS  

or  

Cycle time.  

It’s the period in which the output ON time changes. The quicker the system to be controlled  

reacts to temperature variations, the smaller the cycle time must be, in order to obtain higher  

temperature stability and less sensitivity to load variations.  

V

RS485  

TTL  

rH  

Menu access/autotuning  

ON/OFF  

Output state in case of probe failure.  

1PF  

OAU  

data I/O  

data I/O  

9

11 10  

11  

+

10  

-

V+ VIN V-  

Confirm  

Increase  

Decrease  

Discard  

NON;  

THR;  

AL0;  

AL1  

AUX output operation.  

NON : output disabled (always off). (the next parameter will be ATM)  

THR: output programmed for second thermostat control (the next parameter will be 2SM).  

AL0: contacts open when an alarm condition occurs (the next parameter will be ATM).  

AL1: contacts make when an alarm condition occurs (the next parameter will be ATM).  

or  

OUT1  

7

OUT2  

OUT1  

OUT2  

POWER  

POWER  

6

5

4

3

1

2

6

7

5

4

3

1

2

*Configuration access [PSD] is 123  

*Tuning access [TUN] is 321  

ABS;  

REL  

Setpoint 2 mode.  

2SM  

2SP  

Channel 2 setpoint may be absolute (2SM=ABS), or a differential relative to setpoint 1 (2SM=REL)  

0L0036R02-03 AC2-5  

Autotuning  

SPL...SPH Auxiliary output switchover temperature (the next parameter will be 2CH)  

100...240Vac  

100...240Vac  

CONDITION  

1CM = PID  

1CH = configured  

1SP = configured  

AC2-5AS2RW-B  

AC2-5JS2RW-A  

ON  

ON  

EN  

INSTRUCTIONS FOR USE  

Confirm  

Increase  

Decrease  

Discard  

blink  

Confirm  

Discard  

Exit  

RS485  

OFF  

OFF  

MODE D’EMPLOI  

FR  

2SP 2SP+2HY T[°]  

2SP-2HY 2SP  

ON/OFF control in heating  

(2SM=ABS, 2CH=HEA)  

T[°]  

ON/OFF control in refrigeration  

data I/O  

9

10 11  

11 10  

(2SM=ABS, 2CH=REF)  

-

W

R

W

+

OUT1  

-19.9...19.9° Temperature differential relative to 1SP. The auxiliary output setpoint is equal to 1SP+2DF  

2DF  

OUT2  

OUT1  

7

OUT2  

Errors  

ON  

ON  

If the autotuning function failed, the display shows an error code:  

POWER  

POWER  

12V  

6

■ E1 timeout1 error: the controller could not bring the temperature within the proportional band. Increase 1SP in case of heating  

control, vice versa, decrease 1SP in case of refrigerating control and re-start the process.  

■ E2 timeout2 error: the autotuning has not ended within the maximum time allowed (1000 cycle times). Re-start the autotuning  

process and set a longer cycle time 1CT.  

■ E3 temperature overrange: check that the error was not caused by a probe malfunction, then decrease 1SP in case of heating  

control, vice versa increase 1SP in case of refrigerating control and then re-start the process.  

■ E4 device not configured correctly: the device has an incorrect configuration of the 1CM parameter. Enter the menu and check that  

the 1CM parameter is set to PID.  

7

-

4

3

1

2

6

5

4

3

1

2

OFF  

OFF  

+

SSR  

12 7...30  

Vac Vdc  

^1SP+2DF+2HY T[°]  

1SP+2DF  

1SP+2DF-2HY  

T[°]  

2DF>0  

2DF<0  

1SP+2DF  

1SP  

1SP  

~

-

ON/OFF control in refrigeration. Setpoint 2  

relative to setpoint 1 (OAU=THR, 2CH=REF)  

ON/OFF control in heating. Setpoint 2  

relative to setpoint 1 (OAU=THR, 2CH=HEA)  

~

+

100...240Vac  

AC2-5JS2RL  

AC2-5PS2MW-B  

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General	Details
Name	hawco AC2-5 Two Stage Thermostat Instruction Manual
Make	hawco
Language	English
Filetype	PDF (Download)
File size	0.41 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• hawco

hawco AC2-5 Two Stage Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: AC2-5 instructions for use To eliminate the error indication and return to the normal mode, press the button. To reduce overshoot, reduce the integral action reset 1AR. To increase the response speed of the system, reduce the proportional band 1PB. Caution: doing this makes the system less stable. To reduce swings in steady-state temperature, increase the integral action time 1IT; system stability is thus increased, although its response speed is decreased. To increase the speed of response to the variations in temperature, increase the derivative action time 1DT. Caution: a high value makes the system sensitive to small variations and it may be a source of instability. Thank you for having chosen a LAE electronic product. Before installing the instrument, please read these instructions carefully to ensure maximum performance and safety. Power supply AC2-5...L* 7...30 Vdc / 12Vac ±10%, 3W. Minimum ON time is 0...30min. After output 2 has been turned ON, it remains active for 2T0 minutes regardless of the temperature value measured.
• Page 2: Amélioration du contrôle Pour réduire le dépassement, diminuer le reset de l’action intégrale. Pour augmenter la rapidité du système, diminuer la bande proportionnelle; attention, de cette manière le système sera moins stable. Pour réduire les oscillations de la température en régime, augmenter le temps de l’action intégrale; on augmente de cette manière la stabilité du système mais on en diminue la rapidité. Nous vous remercions d’avoir choisi un produit LAE electronic. Pour que votre instrument soit le plus sûr et le plus performant possible, il est indispensable d’en lire attentivement le mode d’emploi. Temps minimum d'activation. Après une activation, la sortie 2 reste active pendant 2T0 minutes, indépendamment de la valeur de température. Pour augmenter la vitesse de réponse aux variations de température, augmenter le temps de l’action dérivée; attention: une valeur élevée rend le système sensible aux petites variations et peut être source d’instabilité. Après un arrêt, la sortie 2 reste désactivée pendant 2T1 minutes, indépendamment de la valeur de température. Alarme de température avec seuils relatifs en réfrigération. Alarme de température avec seuils relatifs en chauffage. Le contrôle de la température s’active en variant le temps de ON de la sortie: plus la température est proche du point de consigne, plus bref sera le temps d’activation.