Auber SYL-2352P Manuale di istruzioni - Pagina 6

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AUBER INSTRUMENTS

A=1, direct action control mode for cooling control.

B=0, without alarm suppressing when turned on or when set point changes.

B=1, alarm suppressing at power up or set point changes.

C=0, display unit in ºC.

C=1, display unit in ºF.

The factory setting is A=0, B=1, C=1 (heating, with alarm suppression, display

in Fahrenheit). Therefore,

COOL=0X1+1X2+1X8=10

To change from Fahrenheit to Celsius display, set COOL=2

4.15 Input digital filter "FILt"

If measurement input fluctuates due to noise, then a digital filter can be used

to smooth the input. "FILt" may be configured in the range of 0 to 20.

Stronger filtering increases the stability of the readout display, but causes

more delay in the response to change in temperature. FILt=0 disables the

filter.

4.16 Manual and Automatic Mode Selection "A-M"

Parameter A-M is for selecting automatic or manual control mode.

A-M=0, manual control mode

A-M=1, automatic control mode (either PID or On/off control)

A-M=2, automatic control mode, in this state manual operation is prohibited

This parameter functions differently for controllers with the ramp/soak function

(see supplemental manual for details).

4.17 Lock up the settings, field parameter "EP" and parameter "LocK"

To prevent the operator from changing the settings by accident, you can lock

the parameter settings after initial setup. You can select which parameter can

be viewed or changed by assigning one of the field parameters to it. Up to 8

parameters can be assigned into field parameter EP1-EP8. The field

parameter can be set to any parameter listed in Table 2, except parameter EP

itself. When LocK is set to 0, 1, 2, and so on, only parameters or setting

values of program defined in an EP can be displayed. This function can speed

up parameter modification and prevent critical parameters (like input, output

parameters) from being modified.

If the number of field parameters is less than 8, then define the first unused

parameter as none. For example, if only ALM1 and ALM2 need to be modified

by field operators, the parameter EP can be set as following:

LocK=0, EP1=ALM1, EP2=ALM2, EP3=nonE.

In this case, the controller will ignore the field parameters from EP4 to EP8. If

field parameters are not needed after the instrument is initially adjusted,

simply set EP1 to nonE.

Lock code 0, 1 and 2 will give the operator limited privileges to change some

of the parameters that can be viewed. Table 5 shows the privileges

associated with each lock code.

Table 5. LocK parameter

LocK value

SV Adjustment

Yes

3 and up

808

Note: to limit the control temperature range instead of completely locking it,

please refer to section 4.9.

2011.02

EP1-8 Adjustment Other parameters

Yes

Locked

Yes

Locked

unlocked

5. Wiring examples

5.1 Controlling the load directly with internal relay

13 14

SYL-2342

Figure 6. SYL-2342 or SYL-2342P control the heater directly by the

internal relay of the controller. The heater must consume less current than

the internal relay's maximum rating (7A at 240VAC and 10A at 120VAC).

5.2 Controlling the load via external contactor

Alarm1

Alarm2

12V

SYL-2342

Figure 7. SYL-2342 or SYL-2342P with thermocouple input and external

relay output. This is a typical wiring for oven and kiln.

Using the external contactor allows users to control higher power loads than

the internal relay can handle. It is also easy to service. If the contacts of the

relay wear out, it is more economical to replace them than to repair the

controller. In this example, we assume the coil voltage of the contactor is the

same as the voltage of the controller power supply. The voltage of power

supply for alarm is 12V DC. Note: You don't have to wire or set the alarm

to control the temperature. It is just to show how the alarm can be wired.

5.3 Controlling the load via SSR

Alarm1 12V DC

13 14

SSR

SYL-2352

Figure 8. SYL-2352 or SYL-2352P with RTD input. This is a typical wiring for

controlling the temperature of a tank of liquid with high precision.

The RTD sensor can offer accuracy within a fraction of a degree . The SSR

allows the heater to be switched at higher frequency for better stability. It also

has longer life time than the electromechanical relay. A proper heat sink is

needed when the SSR switches >8A of current. For wiring a 240V heater,

please see 5.4.

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Heater

Fuse

120VAC

Heater

Contactor

Fuse

Heater

Fuse

120VAC

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