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gefran 1600P, Инструкция по установке и эксплуатации

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gefran 1600P Скачать руководство пользователя страница 12

This alarm detects an interruption in the control loop caused by a possible short-circuited probe, inverted probe connections or broken load.

If enabled (AL.nr), the alarm trips if the variable does not increase when heating (reduce when cooling) at maximum power for a set time (LbA.t).

The value of the variable is enabled only outside the proportional band; when the alarm is ON, power is limited to value (LbA.P). 

The alarm condition resets as soon as temperature increases for heating (or reduces for cooling), or by simultaneously pressing the “ 

∇

 ” e “ 

Δ

 ” keys in 

Out.P of level 1.

The LBA function is disabled if LbA.t = 0.

LBA ALARM

This type of alarm requires use of a current transformer input (CT).

It can indicate variations of load current measured through transformer input in the range (Lo.S2 ... HI.S2).

It is enabled by means of configuration code (Hrd, AL.nr); in this case the alarm setpoint is expressed as HB scale points.

The alarm function and the assigned control output are selected through parameter Hb_F (“Out” phase).

The alarm setpoint is AL.Hb.

The direct HB alarm trips if current transformer input falls below the setpoint for Hb_t seconds of ON time for the selected output.

The HB alarm can be activated only with ON times exceeding 0.4 seconds.

The HB alarm monitors load current even during the OFF period of the cycle time of the selected output.

The HB alarm will trip if measured current exceeds 12% of the CT input full scale for Hb_t seconds when the output is in OFF state.

The alarm is reset automatically when alarm conditions have been cleared.

If AL.Hb is set at = 0, both types of HB alarm are disabled and the assigned relay is de-energized.

The load current reading is displayed by selecting InP2 (level 1).

NOTE: ON/OFF times refer to the cycle time set for the selected output.

Alarm Hb_F = 3 (7), for analog output is ON when the load current is lower than the alarm setpoint; the alarm is disabled if the heating (cooling) output is 

lower than 2%.

HB ALARM

9 • ALARMS

This function (if enabled) partializes power in proportion to the time elapsed since power-up compared to the preset time 0.0 ... 500.0 min (“SoFt ” 

parameter, CFG). Soft-start is an alternative to self-tuning and is activated each time the unit is powered up. The soft-start function is reset by switching to 

Manual control.

10 • SOFT-START

time

AL1 + Hyst1

AL2 + Hyst2

AL2

AL1

alarm 1

alarm 2

(*)

For AL1 = reverse absolute alarm (low) with positive Hyst1, AL1 t = 1

(*) = OFF if disabled on power-up

For AL2 = direct absolute alarm (high) with negative Hyst2, AL2 t = 0

For AL1 = symmetrical Lo absolute alarm with Hyst1, AL1 t = 5

For AL1 = symmetrical Hi absolute alarm with Hyst1, AL1 t = 4

Normal absolute alarm

Symmetrical absolute alarm

Lo alarm

Hi alarm

AL1

AL1 + [ Hyst1 ]

AL1 - [ Hyst1 ]

time

For AL1 = Lo deviation alarm with negative Hyst 1, AL1 t = 3

For AL1 = Hi deviation alarm with negative Hyst 1, AL1 t = 2

For AL1 = Symmetrical Lo deviation alarm with Hyst 1, AL1 t = 7

For AL1 = Symmetrical Hi deviation alarm with Hyst 1, AL1 t = 6

time

SP+AL1

SP

Lo alarm

Hi alarm

SP+AL1

SP

Lo alarm

Hi alarm

time

Hyst1

Deviation alarm

Symmetrical deviation alarm

SP-AL1

12

80090G_MHW_1600-1800P_04-2013_ENG

Содержание 1600P

Страница 1: ...range with or without decimal point PTC type on request DIN 43760 Pt100 JPT100 990Ω 25 C Max line resistance for RTD 20Ω Safety detection of short circuit or opening of probes LBA alarm HB alarm C F selection configurable from faceplate Linear scale ranges 1999 to 9999 with configurable decimal point position Thermocouples IEC 584 1 J K R S T B E N Ni Ni18Mo L NiCr CuNi Cold junction error 0 1 C C...

Страница 2: ...r supply isolated 1500V 10 24Vdc max 30mA short circuit protection 9 5 18 20 19 21 22 Out2 AL1 Out1 Main C 32 W1 Transmitter supply GND Vt 1 2 3 4 5 6 7 8 9 10 11 24 25 26 27 28 29 30 31 32 33 22 21 20 19 18 17 16 15 14 13 12 1800 1600 NC NC NC NO NO NO C C PWR 3 1 2 T 3 1 2 T Key Function defined with but 2 parameter M A key Function defined with butt parameter PV Display Indication of process va...

Страница 3: ...eep the F key pressed to scroll the menus Release the F key to select the displayed menu Press the F key to access the parameters Keep the F key pressed to exit any menu Keep F Auto Man keys pressed for 2 sec on any menu to go immediately to level 1 display S3 ON Current setpoint display only LEVEL 1 MENU PASS NO SI Hrd U CAL S4 ON YES NO Custom menu Password User calibration Protection code The a...

Страница 4: ...ON 11 ON ON OFF ON 12 OFF OFF ON ON 13 ON OFF ON ON 14 OFF ON ON ON 15 ON ON ON ON S step hold events Step S advanced through digital input function When digital inputs have state set in this function program automatically advances to next step otherwise it waits at end of previous step function is enabled through SP Pr parameter on Hrd menu d i F 1 and or d i F 2 set to 12 Hold Back Band value sy...

Страница 5: ... control Ctrl 14 has been selected s tvn CFG Enabling self tuning autotuning softstart CFG Control parameters 15 S tun Continuos Self tuning Softstart autotuning 0 NO NO NO 1 YES NO NO 2 NO YES NO 3 YES YES NO 4 NO NO YES 5 YES NO YES 6 7 8 WAIT NO NO 9 GO NO NO 10 WAIT YES NO 11 GO YES NO 12 WAIT NO YES 13 GO NO YES Note 1 Active S tun functionS reset when switching from Automatic to Manual Propo...

Страница 6: ...o local setpoint 2 digital absolute from serial line 3 digital relative to from serial line local setpoint PROBE TC SEnS 0 tYPE Probe type Scale Scale range max Scale range max C F without decimal point with decimal point 0 PTC 990Ω C 55 120 55 0 120 0 1 PTC 990Ω F 67 248 67 0 248 0 2 PTC 990Ω C Custom scale 3 PTC 990Ω F Custom scale tYPE Signal type Scale Max scale range 0 0 50mV linear 1999 9999...

Страница 7: ...lla corrente di carico inferiore alla soglia impostata nel tempo di ON dell uscita di controllo 1 Uscita relè logica allarme attivo ad un valore della corrente di carico superiore alla soglia impostata nel tempo di OFF dell uscita di controllo 2 Allarme attivo se una delle funzioni 0 e 1 è attiva OR logico tra le funzioni 0 e 1 3 Per uscita continua di riscaldamento 7 Per uscita continua di raffre...

Страница 8: ... analogue repetition signal output 2 Out W2 Assignment of signal or reference value PV SP SP PROG DEV DEV IN AUX HEAT COOL AL1 AL2 AL3 serial line value 79 80 81 Hrd sp pr hrd i hrd 2 Hrd Hardware configuration Installation of aux input digital inputs serial interface Installation of relay logic outputs MAIN AL1 AL2 AL3 and analogue outputs W1 W2 16 to enable analogue output W1 32 to enable analog...

Страница 9: ...e 0 10V 2 10V 6 Custom 10V 7 Custom max 50mV Selection of probe type for main input 16 disable function in configuration menu only for butt parameters 8 to enable main input curve 4 point correction alternative to custom linearization See description in Main Input Correction Function section 16 to disable averaging filter on sampled value available from software release 3 05 8 to disable averaging...

Страница 10: ...int value rPt ramp time from 0 0 to 99h59m time base in h m or 99m59s time base in m s set a time that gives a faster or slower variation depending on the initial value and on the final setpoint Sot hold time from 0 0 to 99h59m time base in h m or 99m59s time base in m s Hbb tolerance band symmetrically positioned above and below the setpoint and referenced to the main input or the auxiliary input...

Страница 11: ...d by intercepting the setpoint profile point B1 If interception is not possible as in the case of variable at PV1 program restart occurs at the current time and setpoint If the Hbb control is enabled the programmer time base remains stopped until the variable re enters the set tolerance band symmetrically placed around the setpoint PV1 1 2 3 4 t1 t2 A1 A B1 B PV Set point Step 0 time Display Modif...

Страница 12: ...he output is in OFF state The alarm is reset automatically when alarm conditions have been cleared If AL Hb is set at 0 both types of HB alarm are disabled and the assigned relay is de energized The load current reading is displayed by selecting InP2 level 1 NOTE ON OFF times refer to the cycle time set for the selected output Alarm Hb_F 3 7 for analog output is ON when the load current is lower t...

Страница 13: ...ional band at 0 1 with on off type setting C Switch to automatic and observe the behavior of the variable It will be similar to that in the figure D The PID parameters are calculated s follows Proportional band Peak P B x 100 V max V min V max V min is the scale range Integral time It 1 5 x T Derivative time dt It 4 E Switch the unit to manual set the calculated parameters Return to PID action by ...

Страница 14: ...mmer model the program is in STOP if self tuning is activated when the unit is switched on 14 SELF TUNING 15 AUTO TUNING PID parameters cannot be set if the self tuning function is enabled The function can be one of two types permanent or one shot The first continuously measures system oscillations to find the optimum PID values to reduce such oscillations It does not engage if the oscillations dr...

Страница 15: ...n is applied to linear scales 50mv 10V 20mA Pot The four values are set on the Lin menu as follows A1 St100 B1 St01 A2 St02 B2 St03 Setting is limited to the defined scale LoS HiS on InP menu The offset function oFt parameter on InP menu remains enabled Limits B1 always greater than A1 B1 A1 at least 25 of full scale of selected probe Example Sens 9 TyPE 0 Pt100 natural scale 200 600 dPS 0 LoS 0 H...

Страница 16: ...an isolation transformer be used only for the devices connecting the screen to ground it is important for the electrical system to have a good ground connection voltage between neutral and ground must not exceed 1V and resistance must be less than 6Ohm if the supply voltage is highly variable use a voltage stabilizer for the device use line filters in the vicinity of high frequency generators or a...

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