Auber Instruments SYL-2372 Manuel d'instruction - Page 6

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For example, in order to activate AL1 when a Process high alarm occurs,

trigger AL2 by a Process low alarm, Deviation high alarm, or Deviation low

alarm, and not show the alarm type in the lower display window, set A = 1, B =

0, C = 0, D = 0, and E = 1. Parameter "AL-P" should be configured to:

AL-P = 1X1 + 0X2 + 0X4 + 0X8 + 1X16 = 17 (this is the factory default

setting)

Note: Unlike controllers that can be set to only one alarm type (either absolute

or deviation but not both at same time), this controller allows both alarm types

to function simultaneously. If you only want one alarm type to function, set the

other alarm type parameters to maximum or minimum (ALM1, Hy-1 and Hy-2

to 9999, ALM2 to –1999) to stop its function.

4.14 "COOL" for Celsius, Fahrenheit, Heating, and Cooling Selection

Parameter "COOL" is used to set the display unit, heating or cooling, and alarm

suppression. Its value is determined by the following formula:

COOL = AX1 + BX2 + CX8

A = 0, reverse action control mode for heating control.

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

B = 0, without alarm suppressing at powering up.

B = 1, alarm suppressing at powering up.

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 Control Mode Selection "A-M"

Parameter A-M is for selecting which control mode to use, the manual control

mode or the automatic PID control mode. In manual control mode user can

manually change the percentage of power to be sent to the load while in

automatic PID control mode the controller decides how much percentage of

power will be sent to the load.

Please note that this parameter does not apply to situations where the

controller is set to work in on/off mode (i.e., At = 0) or when the controller is

performing auto-tuning (i.e., At = 2 or At = 1 and the auto-tune has started).

During auto-tuning, the controller is actually working in on/off mode).

A-M = 0, manual control mode. User can manually adjust the percentage of

power output. User can switch from manual control mode to PID control mode.

A-M = 1, PID control mode. Controller decides the percentage of power output.

User can switch from PID mode to manual mode.

A-M = 2, PID control mode only (switching to manual mode is prohibited).

Please see Figure 3 for how to switch from automatic control mode to manual

control mode or vice versa.

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

To prevent the operator from changing the settings by chance, 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.

2021.06

If the number of field parameters is less than 8, you should 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.

5. Wiring examples

5.1 Controlling the load directly with internal relay

Figure 6. SYL-2372 control the heater directly by the internal relay of the

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

maximum rating (2A).

5.2 Controlling the load via external contactor

120V Buzzer

SYL-2372

Figure 7. SYL-2372 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

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EP1-8 Adjustment

Other parameters

Yes

Locked

Yes

Locked

Unlocked

120VAC

Heater

Contactor

Fuse

P6/8