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1. ES Uo E e L ES z s ow C3 EU ia Yoo zp kp l Z 8 unt og x B 5 o o YN ET ZH yi OU HH ii 1 ne INC Ne xfx TB2e _ LG UX Pe P3 l X4 ke X1 50 60Hz JUMPER E5 8 E6 SIEe 7 U REMOVE JUMPER eee a FOR 50HZ OPERATION PAD E6 lt X7 7 SOFT START DI6C H INDICATES THAT DISABLE kw RI T BOARD POWER R E 1 Q IS PRESENT DISABLED DICATES THAT SUF START IS D17 ACTION l CJ DICATES e DUTPUT FROM A GATE DRIVE C U 211 Te 6 TBI 26 0178 ho L2 Connection used when dt 1 Ju 6 no option card is present DI TBI 240 VOLTS u 6 EP1 Series SCR Power Control EP1 Series Option Board This board is mounted on main logicboard when options are ordered FEEDBACK SOFT START CURRENT TRIP CURRENT LIMIT SOFT START IN OPERATION S OPTION CURRENT TRIP REMOVE TO x1 REMOVE TO DISABLE S OPTIO DISABLE x27 CURRENT TRIP 1x3 x4 REMOVE TO DISABLE CURRENT LIMIT TO MOTHER BOARD TBI 6 L2 Connection N C TRIP RESET CONTACT Warrantv Policv Motortronics warrants its products to be free from defects in material and or workmanship for a period of one year from date of installation to a maximum of 18 months from the date of shipment as indicated by the unit s date code The Company reserves the right to repair or replace any malfunctioning units under warranty at their option All wa
2. d PHASETRONICS SCR Power Control Specialists EP1 Series Power Control Single Phase SCR 10 50 Amps OPERATION amp SERVICE MANUAL Phasetronics Inc P O Box 5988 1600 Sunshine Drive Clearwater FL 33765 727 573 1900 FAX 727 573 1803 EP1 Series SCR Power Control Description The EP1 Series of Phase Angle SCR Power Controls assures smooth proportional output power from 0 to 100 This high quality SCR control is offered in single or a three phase version with a variety of options These options include current limit soft start current trip voltage regulation and l t fusing The unit is ideally suited for all resistive and inductive or variable loads The soft start feature assures a slow rising output voltage to prevent an inrush on inductive or variable resistance loads The control input is adjustable to match all standard temperature and process controllers The control signal sensitivity is adjustable by gain and offset potentiometers The unit can be controlled from an external manual potentiometer MOVs standard protect the SCRs from transient voltages False firing dv dt protection is standard Receiving Upon receipt of this product you should immediately do the following Y Inspect the unit for possible shipping damage If damaged notify the freight carrier and file a claim within 15 days of receipt y Verify the model number on the unit matches you purchase order Y Verify that the unit is the correct curre
3. Volts 5 9 1500 Volts Ambient Temperature Ambient temperature operating range is O to 40 degrees C 32 to 122 F Output rating decreases by 1090 for each 5 degree C rise 9 F in ambient temperature over 40 degrees C 122 F to a max of 60 degrees C 140 F Transportation and storage range is 30 to 65 degrees C 30 to 149 F EP1 Series SCR Power Control Location Proper location of the EP1 Series is necessary to achieve specified performance and normal operation The EP1 Series should always be installed in an area where the following conditions exist Ambient operating temperature is O to 40 degrees C 32 to 104 F e Protected from rain and moisture e Humidity range from 5 to 95 non condensing e Free from metallic particles conductive dust and corrosive gas e Free from excessive vibration below 0 5G e Open panel units must be mounted in the appropriate type of enclosure Enclosure size and type must be suitable to dissipate heat generated by the SCR power control NEMA 1 style enclosures can be vented to reduce size Formulas for sizing Non vented painted Units maximum current FLA x 1 5 watts then metal enclosures watts 10 sq ft of exposed area Non vented stainless FLA x 15 x 1 5 sq ft of exposed area steel enclosures 10 Warning Do not service equipment with voltage applied Unit can be source of fatal electrical shocks To avoid shock AEN hazard remove all sources of power before wo
4. d Soft start ramp adjustment is factory set P3 for 0 5 seconds The soft start ramp time can be increased to a maximum of 30 seconds by adjusting P3 in a clockwise CW direction Note Soft start is active only when initial power is applied and a command signal is present It has no effect on control signal change See Option S on page 6 if soft start is required on restart of mA signal or when lockout is released 25e EP1 Series SCR Power Control Options The following options are available on the EP1 Series but must be specified when ordering When options are ordered a separate option card is mounted on top of the main logic board Soft Start Option S Provides soft start on a signal change or when lockout is released This will help protect fuses The unit is set up so that either of these two soft start modes can be disabled by removing X1 amp X2 on option card See figure 5 below or Option board page 8 The unit will ramp up on a signal change if this signal is set below a threshold level The threshold is adjustable from O to 30 seconds of control signal range Current Limit Option C Provides flexibility for changing loads helps protect unit Adjustable from 10 110 of unit rating Current limit will override control input signal to limit the output current Current transformer included To disable remove X1 amp X3 on option card See figure 5 below or Option board page 8 Current Trip Option T Used as a pr
5. nt and voltage for your application Warni ng Do Not Service Equipment with voltage applied Unit can be a source of fatal electrical shocks To avoid AEN shock hazard disconnect main power before working on unit EP1 Series SCR Power Control Specifications 120 208 240 308 415 480 575 Vac 10 to 15 50 60 Hz Resistive Inductive Lamp Factory set for initial half second of operation of power on Field 4 adjustable via potentiometer from 0 2 seconds to 30 seconds A combination of a high potential gate pulse and a rapid rise time is 4 used to prevent SCR damage due t di dt stress 4 20mA 0 5 Vdc 0 10 Volts 0 of gain maximum Optional feature to provide load avrage voltage regulation of plus J or minus 2 for 10 to 10 of gain maximum I2t fuse protects against short circuit overloads Option F 1 Integral MOV Metal Oxide Varistor protects against high potential transient voltage 2 5 times line rating minimum RC snubber networks prevent false firing due to dv dt characteristics Operating range is from O C thru 40 C 30 F thru 122 F Protective Networks Transient Voltage Suppressor standard Integral MOV Metal Oxide Varistor protects against high potential voltage spikes RC Snubber Standard RC Snubber networks are used to prevent false firing due to dv dt characteristics SCR Peak Inverse Voltage PIV Rating Line Voltage Continuous SCR Rating 120 480 1200
6. otective measure This option will shut down unit when the current exceeds an adjusted preset level Adjustable from 75 200 for instantaneous trip if current exceeds set level Unit can be connected for manual reset Current transformer included To disable remove X4 See figure 5 below or Option board page 8 Line Voltage Regulation Option R Provides more accurate linearity Will maintain output within 296 with a 4 10 line variation Option Card mounted on main logic board Note The number of potentiometers on the option card will vary depending on the options ordered SUFT START CURRENT TRIP CURRENT LIMIT SOFT START IN OPERATION S OPTIO CURRENT TRIP x e lt m A LJ LU L REMOVE TO y REMOVE TO DISABLE S OPTIO DISABLE x27 CURRENT TRIP 5x3 ix REMOVE TO DISABLE CURRENT LIMIT Figure 5 Option setting locations s EP1 Series SCR Power Control Main Logic Board EP1 Series 10 50 Amp
7. positive and 2 negative on TB2 You must select the proper jumper for 4 20 mA 0 5 Vdc or 0 10 Vdc See location of jumpers and pins Figure 2 l 0 10 Vdc connection T Q LL ag E jumper X4 installed x A S Z lt 6 4 20 mA connection N a ng 2 i jumper X2 installed factory setting ni c zr z LG Y l 0 5 Vdc connection E xx GO a A Y 3 L jumper X3 installed Sy Z X1 50 60Hz REMOVE RATE OF CHANGE FOR SOHZ PAD E6 X72 Figure 2 TB2 Connections If manual and automatic control are both used consider using an external auto manual switch to stop the manual setting from overriding the automatic signal EP1 Series SCR Power Control Power Connections Make line 1 connection to L1 and Load connection to T1 See Figure 3 If option card is not used connect L2 using 18 22 gauge wire to terminal 6 on TB1 EPCL1000 See Figure 3 If option card is used connect L2 to terminal 7 of TB2 on option card See Figure 4 INDICATES 4 OUTPUT FROM GATE DRIVE L2 connection if no option card is present T1 To Load Figure 3 Power Connection no option card Option Card mounted on main logic board when options are ordered TO MOTHER BOARD TBl 6 N C TRIP RESET CONTACT Le L2 Connected to TB2 7 on option card Figure 4 Power Connection with option card Soft Start Standar
8. rking on controller Warning labels must be attached to terminals enclosure and control panel to meet local codes Mounting and Cleaning If mounting the EP1 Series unit in an enclosure requires drilling or punching holes in the enclosure cover the electrical assembly to protect unit from metal filings that could short out electronics After work is complete thoroughly clean the area and reinspect the EP1 Series Make sure there is sufficient clearance six inches all around the EP1 Series unit for cooling The unit must be installed with its heat sink ribs oriented vertically and running parallel to the mounting surface Unit should be cleaned on a regular basis to insure proper cooling Do not use any chemicals to clean the unit use 80 to 100 psi clean dry compressed air only A three inch high quality dry paint brush is helpful to loosen up the dust prior to using compressed air on the unit E EP1 Series SCR Power Control Manual Control Connections If manual potentiometer is not used proceed to Automatic Control Connections Manual ees ae potentiometer does not have to be connected for ane unit to operate TBe 4 TBe 6 Connect manual potentiometer to TB2 3 wiper TB2 4 high and TB2 6 low per connection See ec nus Figure 1 for connections amp Figure 2 for locations 5 5 Yoc 0 5 VDC _ gt TB2 2 Figure 1 Manual Connections Automatic Control Connections Connect DC voltage or milliamp input signal to pins 1
9. rranty repairs must be performed by the Company factory or on site by a factory authorized service firms or personnel approved by the Company Solid state controls have different operation characteristics from those of electro mechanical equipment Because of these differences and the wide variety of applications for solid state controls each application designer must verify that the solid state equipment is acceptable for his application In no event will Motortronics be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment The diagrams and illustrations in this document are included solely for illustrative purposes Because of the number of different applications Motortronics can not be responsible or liable for actual use based on the examples or diagrams

PHASETRONICS

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