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16. Noise countermeasures

With phase control, part of the power supply sine wave is dropped. This produces distortion in the sine wave if power supply impedance is high. Also,
because power supply is switched each half cycle, switching noise is produced. The power supply distortion and noise may affect other equipment.
In the case of cycle calculation zero voltage switching, an extremely small amount of noise is produced compared with phase control due to
switching near the zero cross point of the power supply.
Because some noise is produced by switching large current, however, you should use a noise filter if necessary.
Also, if power supply impedance is high, the power supply may flicker in synch with ON/OFF of the thyristor.

16-1. Noise filter (sold separately)

The frequency of noise produced by the thyristor is distributed in a place below several megahertz, and the noise dampening effect of common
commercially available noise filters is insufficient.
Using noise filters specified by Shimaden can dampen this noise.

Equipment current capacity

Noise filter models

20A

NF2020C-SDG

30A

NF2030C-SDG

45A

NF2050C-SDG

60A

NF2060C-SDG

80A

NF2080C-SDG

100A

NF2100C-SDG

For information on noise filters, contact your nearest Shimaden agent.

16-2. Improvement of power supply waveform by phase-advancing capacitor

It is effective to connect a phase-advancing capacitor to the main power supply for
the device and load to ameliorate power supply distortion (high harmonic wave) due to
thyristor phase control by enhancing power factor.
1 μF capacitor should be effective for current capacity 1 A.
This is a very simple method, but you should take the following precautions.
(1) High harmonic wave current flows into the capacitor, so pay attention to

the rated current of the capacitor and watch out for temperature rise.

(2) The capacitor may cause resonation with inductance of the power supply line

resulting in high harmonic wave voltage; check the power supply waveform.

*We recommend the Panasonic N2 low voltage phase-advancing capacitor.

Noise filter connection diagram

Load

(heater)

Power

supply

PAC18A

R

U

Noise filter

Phase-advancing capacitor connection diagram

PAC18A

Load

(heater)

Power

supply

㻾

㼁

Phase-advancing

capacitor

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Содержание PAC18A Series

Страница 1: ...ouch terminal elements or other charged parts while conducting electricity Also do not introduce foreign objects or matter into the equipment If a foreign object or matter accidentally gets inside be sure to turn off the power and make sure all is safe before introducing tools or your hands CAUTION If there is danger of damage to any peripheral device or equipment due to failure of the power regul...

Страница 2: ...11 6 1 Contact input 13 11 6 2 External control input 13 11 6 2 1 Manual output by external adjuster 13 11 6 2 2 Standby 13 11 6 2 3 HB alarm output disable 13 12 Manual operation 14 12 1 Manual operation 14 13 Heater break alarm function 15 13 1 Heater break alarm function current detection alarm output function optional 15 13 1 1 Operation overview 15 13 1 2 Setting method 15 13 1 3 Precautions ...

Страница 3: ...ional 3 Control input 3 Voltage 1 5 V DC input resistance 200kΩ contact common 4 Current 4 20 mA DC receiving impedance 100kΩ contact common 6 Voltage 0 10 V DC input resistance 200kΩ contact common 4 Current capacity 020 20A 030 30A 045 45A 060 60A 080 80A 100 100A 5 Current detection alarm output function optional When P2 Phase control current feedback is selected Without cannot be selected 0 Wi...

Страница 4: ...ed մ Data modification manual dot Flashes when data is modified or manual operation is selected Parameter display section dot green Key switches Parameter key Key for switching screens of each screen group Pressing and holding for 2 seconds switches monitor screen group user parameter screen group Pressing and holding for 2 seconds switches from initial settings screen group manual output screen g...

Страница 5: ...49 118 48 ȭ5 5 5 5 14 5 160 2 M4 12 5 5 5 notch 170 Unit mm 45 60A Weight Approx 1 8 kg U R 68 ȭ5 5 178 188 19 5 5 166 188 11 11 5 5 notch 6 5 2 M5 9 5 84 152 Unit mm 80 100A Weight Approx 3 0 kg 152 80 113 27 5 5 notch 5 194 5 204 82 11 5 181 11 5 204 2 ȭ5 5 2 M8 22 5 R U Unit mm ...

Страница 6: ...on or impact Places exposed to water dripping or direct sunlight Places directly exposed to air from heater or air conditioner Places where maintenance cannot be performed safely 5 Mounting Fasten to control panel wall rack etc when using To ensure safety arrange so that people cannot easily come into contact with the equipment Be sure to mount vertically to allow heat to dissipate Provide at leas...

Страница 7: ...ower supply input Load 7 Power supply and load wiring 7 1 Wiring Wire while referring to the figure above If using a rapid fuse place at entrance to main power supply R terminal Remove the terminal block cover to connect wires to the terminal block Loosen the fastening screws mounted on the device and wire 7 2 Power supply and load wiring PAC18A employs 2 terminal wiring M4 screws are used for the...

Страница 8: ...er 䚷䚷䚷PAC18A C2 C3 On off signal If connecting with on off signal connect between C2 and C3 terminals 8 2 Multiple units connected to a single controller Current input connection diagram Voltage input connection diagram 9 Precautions when turning on the power 9 1 Power supply voltage Power supply voltage for control should be from 100 to 240V If voltage in excess of the rating is applied internal ...

Страница 9: ...y Di function Control continues 5 Input error Control input has exceeded the range of 10 to 110 Not available If multiple alarm causes occur at once display is as follows The following alarm function contents are indicated 10 1 Power failure Power error A power failure alarm occurs when power supply frequency exceeds the 40 70 Hz range or power supply frequency is unstable Output stops when an ala...

Страница 10: ...mplemented by key sequence 3 3 Heater break judgment standard setting If the power supply voltage or output operation amount at that point in time is other than the set condition operation may deviate from the preset values for heater break alarm operation 10 5 Input error An input error alarm occurs if control input is less than 10 or over 110 of the setting range In the case of 0 10 V DC however...

Страница 11: ...t according to external adjuster Adjustment location is allocated to VR1 or VR2 by key sequence 1 6 Ramp lower limit setting If allocated to VR2 connect external adjuster B characteristics 10kΩ VR to terminal block No 4 7 6 Ramp higher limit adjustment and ramp lower limit adjustment cannot be allocated to the same external adjuster VR Control input 100 0 Output 100 Ramp lower limit output charact...

Страница 12: ... for suppressing excessive variation of load voltage load current or suppressing load of electrical equipment Slow up slow down time is the time required for output to go from 0 to 100 You can set from 0 0 to 99 9 seconds by key sequence 1 9 Slow up and 1 10 Slow down The longer the time is set the slower output response is Adjust time according to characteristics of load used The factory setting ...

Страница 13: ...it open circuited between the terminal C2 and C3 first 11 6 1 Contact input Select key sequence 2 1 Control input type selection If the C2 and C3 terminals are shorted output is 100 regardless of control input if they are not shorted output is 0 The equipment can be turned on off from outside Ramp higher limit and ramp lower limit are enabled If input signal voltage current is not applied an input...

Страница 14: ...limit setting and scale higher limit setting are disabled during manual operation 1 Manual operation by key Press and hold on the basic screen for at least 2 seconds 0 0 Basic screen Press and hold for 2 seconds 2 seconds Displayed for approximately 1 second Release 3 1 Manual output display Output is up by and down by Manual operation can be conducted by key sequence 3 1 Manual output display 2 M...

Страница 15: ...nt we recommend setting to 50 increase of the current value per heater in order to have the device operate reliably In this case the current value per heater is 20 of the rating Setting by 1 break therefore would be current value per break 80 current value per heater 20 x 0 5 90 100A PAC18A R U Example 2 If using 1 heater Set to 50 between 0 current when broken and 100 when operating normally 13 1...

Страница 16: ...cifications press for 5 seconds or more press for 2 seconds or more for 2 seconds or more for 5 seconds or more for 2 seconds or more However if 2 1 Control input type setting is set to Line the C2 C3 terminals are shorted and Di function 2 2 is set to either or you cannot switch to 3 screens for 2 seconds or more Control input scale higher limit setting press press press press ...

Страница 17: ... 17 for 2 seconds or more for 2 seconds or more press press ...

Страница 18: ...nit A Displays load current value Displayed when optional current detection is selected In the case of phase control effective value in the case of cycle calculation zero voltage switching control mean value of effective value for 1 second Displays if less than 5 of rated current 0 2 Control input Unit Displays control input value or is displayed if control input is less than 10 is displayed if 11...

Страница 19: ...r limit cannot be allocated to VR1 or VR2 at the same time If one VR has been selected the other is automatically selected as well Example If ramp lower limit is set for VR1 only VR2 can be selected to set ramp higher limit by VR To change while higher or lower limit is selected first cancel VR allocation and then change VR cannot be selected while using key sequence 1 11 Current limit To allocate...

Страница 20: ...en group Group of screens for setting operation conditions for the device Must be set in advance Pressing and holding for at least 5 seconds from key sequence 0 0 Output monitor basic screen switches to the initial setting screen group Output is stopped output OFF To exit the initial setting screen group press and hold from 2 0 Initial screen for at least 2 seconds and then release After rebooting...

Страница 21: ... switches from key sequence 0 0 Output monitor basic screen to manual output If you switch to manual output by key sequence 0 0 Output monitor basic screen the value of the immediately preceding control input is carried over If reverting to the 0 0 Output monitor basic screen from manual output output is in accordance with control input values at that time 0 0 Basic screen Press and hold for 2 sec...

Страница 22: ...ntrol type Features and output waveform of phase control and cycle calculation zero voltage switching control are as follows Phase control Cycle calculation zero voltage switching control 100 output 80 output 50 output 20 output 100 ON 80 ON ON OFF OFF 50 OFF ON OFF ON 20 ON OFF OFF ON Control type Output Phase control Cycle calculation zero voltage switching control Harmonics disturbance Possibil...

Страница 23: ...al to control input signal This function enables finer output control than cycle output control You should use the current limit function and variation limit function in combination for load with significant inrush current 15 4 2 Phase control voltage proportional output You can obtain output voltage proportional to control input signal The current limit function is necessary for large inrush curr...

Страница 24: ...mpen this noise Equipment current capacity Noise filter models 20A NF2020C SDG 30A NF2030C SDG 45A NF2050C SDG 60A NF2060C SDG 80A NF2080C SDG 100A NF2100C SDG For information on noise filters contact your nearest Shimaden agent 16 2 Improvement of power supply waveform by phase advancing capacitor It is effective to connect a phase advancing capacitor to the main power supply for the device and l...

Страница 25: ...p of the transformer 17 3 If using electromagnetic switch contactor If using an electromagnetic switch contactor for a circuit connected to the transformer inductive load malfunction could result from contact bounce If so you should either use the prescribed noise filter or connect an X capacitor 0 1 0 5 μF between the R and U power supply side terminals of the thyristor or a Y capacitor 1000 3300...

Страница 26: ...a transformer or load short while energized Recommended rapid fuses Current capacity Model Rapid fuse 20 30A QSF006 45 60A QSF007 80 100A QSF008 Fuse holder 20 60A QSH002 80 100A QSH003 Rapid fuse and fuse holder set 20 30A QSF01F 45 60A QSF01G 80 100A QSF01H For information on rapid fuses contact your nearest Shimaden agent Connection diagram CAUTION Cut off the device s power supply before repla...

Страница 27: ...ale plate knob 1 each provided External dimensions and panel cutout unit mm 0 30 20 40 50 90 70 80 60 100 10 2 7 10 16 5 20 36 5 ȭ31 2 M9 P0 75 1 1 6 ȭ55 ȭ9 5 ȭ9 5 12 s0 2 t1 0 Panel cutout ȭ6 ȭ3 20 2 External rapid fuse 20 30A Model QSF006 80 100A Model QSF008 45 60A Model QSF007 External dimensions unit mm 55 41 25 9 5 12 17 5 19 2 6 5 95 70 40 25 30 34 3 5 13 11 ...

Страница 28: ...lder 20 30A 45 60A Model QSH002 External dimensions unit mm Insulation board x 2 18 2 65 17 8 16 26 1 35 3 4 27 22 17 8 8 1 5 䃥4 3 2 䃥3 5 2 M6 41 65 26 䃥4 5 1 5 2 4 1 1 80 100A Model QSH003 External dimensions unit mm ...

Страница 29: ...y or the circuit may be shorted 2 Is the load circuit open If the load circuit is open the panel meter or tester will indicate high voltage Check the load circuit 3 Ramp lower limit setting is high The minimum value for output is not set to zero for ramp lower limit function Check the value of the parameter setting screen and position of the external adjuster VR to which the ramp lower limit is al...

Страница 30: ...w up time slow down time 0 0 99 9 sec Input scaling lower 0 0 20 0 lower 80 0 100 Manual operation 0 0 100 External adjustment function Connecting external adjuster sold separately enables ramp setting higher lower and manual operation adjustment max 3 Additional functions options Output current detection alarm output function By built in current sensor CT Current limit function Phase control only...

Страница 31: ... ambient humidity range 90 RH or lower no dew condensation Storage temperature 20 65 C Internal heat value Safety standards Safety IEC61010 1 EN61010 1 IEC61010 2 030 EN61010 2 030 EMC EN61326 1 The specified noise filter sold separately must be used Insulation resistance Between control power supply terminal and control input terminal 500V DC 20 MΩ min Between main power supply terminals and chas...

Страница 32: ... Specialists Head Office 2 30 10 Kitamachi Nerima ku Tokyo 179 0081 Japan Phone 81 3 3931 7891 Fax 81 3 3931 3089 E MAIL exp dept shimaden co jp URL http www shimaden co jp The contents of this manual are subject to change without notice ...

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