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NIVELCO UNICONT PMG-500, Руководство пользователя и программирования, Страница: 22 / 41

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22 pmg511en21p01

Temperature

Control 

output

SV

Time (t)

Cooling control

Hysteresis 

[PAR2 → hHYS/hOFT/cHYS/cOFT]

Hysteresis is the setting of the control output on and off point in ON / OFF mode. 

ON_Hysteresis 

sets the output 

to an ON point, and 

OFF_Offset

 sets an off point. The values are set in 

°C / °F.

If the hysteresis is set too low, the disturbing characteristics that affect the device 

(noise, etc.)

 will turn the output 

control 

(compared to the control characteristics)

 uncertainly on and off, which should be avoided. To minimize 

this condition, adjust the 

ON_Hysteresis

 and 

OFF_Offset 

values according to the control characteristics 

(e.g., 

heater or cooling capacity and temperature)

 and the operator response, sensor response characteristics, and 

installation conditions.

Parameter

Description / Range

Default

hHYS

Sets 

ON_Hysteresis

 to heating control

002

hOFT

Sets 

OFF_Offset

 to heating control 

cHYS

Sets 

ON_Hysteresis 

to cooling control

000

cOFT

Sets 

OFF_Offset

 to cooling control 

5.6.3 PID Control 

[PAR3 → C-MD → PID]

PID

 control is a combination of the proportional 

(P)

, integral 

(I)

, and differential 

(D)

 control and provides excellent 

control over the devices, even with a delay time. The device uses the same 

PID

 time constant for SV0… SV1.

Proportional control 

(P)

 follows the set control value well with a small error; integral control 

(I)

 automatically 

corrects the error, and differential control 

(D)

 accelerates the response to the control. Through these operations, 

PID control achieves ideal temperature control.

Note: The PID controller can also be set as a P, PI, or PD controller.

Proportional control (P): Select PID control and set the integration and differential time to 0000.

Proportional Integral Control (PI): Select PID control and set the differential time to 0000.

Proportional Differential Control (PD): Select PID control and set the integration time to 0000.

0%

Heating control (inverted operation)

PV

Control output

(MV)

100.0%

0%

Cooling control (normal operation)

PV

Control output

(MV)

100.0%

ON_Offset

OFF_Hysteresis

Содержание UNICONT PMG-500

Страница 1: ...NICONT PM PMG 500 UNIVERSAL CONTROLLER Manufacturer Process Control Co H 1043 Budapest Dugonics u 11 Tel 36 1 889 0100 E mail sales nivelco com nivelco com USER S AND PROGRAMMING MANUAL 1st edition PD...

Страница 2: ...FT HEAT or Cooling Control PAR3 O FT COOL 13 5 5 2 Heating Cooling Control PAR3 O FT H C 13 5 5 3 Deadband Overlap Band PAR2 DB 14 5 5 4 MV Upper Limit Value PAR2 H MV and MV Lower Limit Value PAR2 L...

Страница 3: ...34 5 9 3 Communication Parity Bit PAR4 PRTY 34 5 9 4 Communication Stop Bit Settings PAR4 STP 34 5 9 5 Response Timeout Settings PAR4 RSwT 34 5 9 6 Enable Disable Communication Writing PAR4 COMW 35 5...

Страница 4: ...ication functions 2 SPECIFICATIONS 2 1 GENERAL DATA PMG 500 Power supply AC 100 240 V AC 50 60 Hz 8 VA AC DC 24 V AC 50 60 Hz 8 VA or 24 48 V DC 5 W Voltage tolerance 10 deviance from nominal voltage...

Страница 5: ...AL1 min 20 000 000 operations Electrical OUT1 OUT2 AL1 min 100 000 operations Memory retention 10 years non volatile semiconductor memory Ingress protection Behind mounting plane IP20 front panel IP5...

Страница 6: ...36 55 56 3 MOUNTING The panel is mounted on the front panel in a 1 16 DIN 48 x 48 mm cutout with the supplied mounting frame Make sure that the rubber seal fits which ensures tightness from the front...

Страница 7: ...e temperature sensor or analog input is correct Make sure the polarity of the power supply is correct Do not swap the output and input terminals For thermocouple sensors use a compensation cable with...

Страница 8: ...t is switched on continuously During automatic control it switches on when the measured value exceeds 3 0 and switches off when it falls below 2 0 9 button It is used when entering parameter group ret...

Страница 9: ...can sometimes restore other related parameters Always check that such parameters are not affected 5 3 INPUT SETTINGS PAR3 IN T For normal operation the universal input must first the universal input...

Страница 10: ...r analog inputs it sets the analog upper lower input values to the max min temperature range and the SV upper lower limits to the upper lower scale values Therefore the settings need to be reconfigure...

Страница 11: ...alue PAR3 L SC Sets the display scales for the lower limits of the analog input L RG Based on the decimal point setting Default 0 5 3 8 Upper Limit Scale Value PAR3 H SC Sets the display scales for th...

Страница 12: ...SV upper limit 1 digit 200 temperature C F 100 0 analog Note Setting values outside the min max input range or analog upper lower limits is impossible The previous settings are retained instead of suc...

Страница 13: ...Value PV falls below the Set Value SV the output will power the heater Cooling Control Mode If the Process Value PV rises above the Set Value SV the output will power the cooler 5 5 2 Heating Cooling...

Страница 14: ...erature proportional band proportional band lower value when using different proportional bands Set the range analog 99 9 99 9 Default 0000 temperature H 000 0 temperature L analog unit temperature C...

Страница 15: ...d Overlap band Heating control Heating control Heating control Cooling control Cooling control Cooling control Control output MV Control output MV Cooling proportional band Cooling hysteresis offset H...

Страница 16: ...db is in 10 digits When db is in 10 digits When db is in 0 digit When db is in 0 digit Control output MV Control output MV Control output MV Control output MV Cooling proportional band Cooling hyster...

Страница 17: ...wer limits of the control output MV H MV L MV can be set to the actual MV provided that the MV calculation of the temperature controller exceeds the limits When controlling heating and cooling the coo...

Страница 18: ...controlled system Control is based on the changed SV hereafter RAMP SV based on the preset rate of change temperature changing per unit time The RAMP uplink rate and the RAMP downlink rate can be conf...

Страница 19: ...ton and automatic manual changeover will not work with communication If the unit is turned on after a power failure or shutdown the previous mode automatic or manual will be retained It is possible to...

Страница 20: ...to switch between 0 1 2 3 4 5 6 7 8 9 0 In any condition press the button to end the manual control mode The MAN indicator light goes out and the system returns to automatic control mode Note After he...

Страница 21: ...Cooling 0 0 Note In heating and cooling control mode a value between 0 1 and 100 0 is used as the heating MV and a value between 0 1 and 100 0 is used as the cooling MV 5 6 TEMPERATURE CONTROL 5 6 1...

Страница 22: ..._Hysteresis to cooling control 000 cOFT Sets OFF_Offset to cooling control 5 6 3 PID Control PAR3 C MD PID PID control is a combination of the proportional P integral I and differential D control and...

Страница 23: ...for the rest of the time The preset period when the output is ON OFF is called the proportional control period Control with SSR drive output is faster than relay output Therefore setting a shorter con...

Страница 24: ...N STOP STOP or auto tuning RUN STOP AT and the digital input terminal DI 1 function switches RUN STOP STOP or AUTO MANUAL control selection MAN auto tuning stops automatically when the affected DI is...

Страница 25: ...eviation Set to 10 C ON OFF SV 100 C PV 110 C H Lower deviation Set to 10 C If the deviation between PV and SV is higher than the deviation temperature setpoint as a lower limit the alarm output will...

Страница 26: ...AL C Standby sequ ence 1 The first alarm condition is ignored and the second alarm condition operates in normal alarm mode If there is power supplied and there is an alarm condition the first alarm c...

Страница 27: ...ting the on off interval for alarm output 1 5 7 1 Alarm operation PAR4 AL 1 H means the hysteresis of the alarm output in alarm operation It is used to set the interval between the ON OFF periods of t...

Страница 28: ...tection band LBaB during the LBA monitoring time LBaT the alarm output will turn on Cooling control If the MV control output is 0 or lower limit L MV and the PV does not increase at the LBA detection...

Страница 29: ...ent range the auto adjustment will be set to the maximum or minimum value Except changing the input type restarting auto tuning setting the LBA monitoring time manually it maintains the current SV Reg...

Страница 30: ...e sensor fault can be confirmed via an external alarm output contact such as an audible signal or the like If the alarm operation is set to AL 1 SBA the sensor fault alarm will be activated Note The a...

Страница 31: ...arm output deactivation signal is greater than the minimum signal band However deactivating the alarm output is not available if the alarm conditions are still valid The front panel digital input butt...

Страница 32: ...esis Standard alarm ON OFF Standard Alarm ON OFF Alarm Latch ON OFF Alarm Latch ON OFF Alarm Latch ON OFF Alarm Latch ON OFF Standby Sequence ON OFF Standby Sequence ON OFF Alarm Latch and Standby Seq...

Страница 33: ...PAR4 FsL1 FsH1 Setting Description Range Default FsL1 Sets the lower limit of transmission output 4 mA 200 FsH1 Sets the upper limit of transmission output 20 mA 1350 If the transmission output value...

Страница 34: ...on Parity Bit PAR4 PRTY This parameter enables or disables the parity bit setting The parity bit is a data communication method that adds an additional bit to the transmitted data packet as an indicat...

Страница 35: ...controller output type For the heater cooler model the heater flow monitor function can be used on OUT1 5 10 4 RUN STOP PAR1 R S In Normal mode RUN users can manually start or stop control output Defa...

Страница 36: ...e Multi SV number will not change by pressing the button or communicating 5 10 5 2 Selecting the Multi SV Number PAR1 SV N Select the SV to control Default setting SV 0 Note The number range SV number...

Страница 37: ...omplete parameter list are only displayed Default setting STND Settings Description STND Activates standard user parameters HIGH Activates all parameters 5 10 8 SV Group Lock PAR5 LcSV The modificatio...

Страница 38: ...ce is in Normal mode requires a password confirmation parameter PASS Then the correct password must be entered to access the setting parameters Settings 1 Access to the SV parameter or parameter group...

Страница 39: ...econds if the input value is below the input range Standard Heating 100 cooling 0 Heating and cooling heating 100 cooling 0 Analog Flashes every 0 5 seconds if the input value exceeds 5 10 of the lowe...

Страница 40: ...of decontamination A statement must be provided in the declaration that the decontamination process was successfully completed and that the device is clean from any hazardous substances Unused device...

Страница 41: ...put key DI 1 input terminal function DI 2 input terminal function Manual control initial MV Manual control preset MV Sensor error MV Control stop MV User level SV setting lock Parameter 1 group lock P...

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