DMFC36 User manual - United Automation
Contents
1. 0V DC control signals The controller is set for 0 5V DC control signals and manual control uses a 5K Potentiometer Page 4 of 10 WIRING THYRISTOR CONNECTIONS LIN 2 Li LINE O LINE 3 O L2 _ o jj imi ArT LIAD 3 ir i KI Ke Ge KI U F s G 2 T 3 a ns es ae me Gl Gl K OFFSET ON CURRENT SIGNAL 3 PHASE BURST FIRING CONTROLLER SINLE CYL ym DMFC36 FUSE 1A STANDARD CYCLE 4 VIRE NEUTRAL 2 LEG LOAD I z BURST FIRE Se S PHASE ANGLE 0 10 SIGNAL Er 0 SV SIGNAL 5 IC ON united automationcom FAULT SIGNAL OPTIONS NOTE USE EITHER DC OR AC SUPPLY BURST RATE UP VOLTS CURRENT 1 De SUPPLY VOLTAGE TAP AC SUPPLY RAMP SV m OV INHIBIT py 24y k L1 Le BURST RATE SETTING STANDARD MODE RAMP SPEED OQ sfs sfs W S ONU mA LNU INHHI GNO 24 A C a a Ap e T USE ONE SUPPLY ONLY a 24V AC DC OR MAINS SUPPLY gt 5K VE VE MAINS SUPPLY USE ANY TWO PHASES OR MANUAL DC V SIGNAL DC CURRENT SIGNAL PHASE AND NEUTRAL FOR 115 240V OPTION POTENTIONETER VE ae Page 5 of 10 APPLICATION CIRCUITS Typical 3 Phase 3 Wire 4 Wire amp 6 Wire Load configurations all three phases switched 4 WIRE 3 PHASE WITH STAR POINT TO NEUTRAL 3 WIRE 3 PHASE FLOATING STAR LOAD 6 WIRE 3 PHASE OPEN DELTA LOAD NOTE CIRCUIT 7 IS PHASE SENSITIVE 3 WIRE 3 PHASE O CLOSED DELTA LOAD LINE 3 Typical 3 Phase 3 Wire Load configurations only t2. ates when they are off The waveforms show zero voltage and thus current switch on and zero current switch off A more comprehensive set of waveforms and Harmonics information is available in a separate appendix document Ref X10789 Single cycle fast burst 50 setting 2 leg control Uncontrolled Linet Dual cycle fast burst 50 setting 2 leg control ine 3 ARKAA K OX DS xX XXX XK N ncontrolle a X x X Ko J UA Mg a kuy kuyu yl ela PRC I emt PN Ne Single cycle fast burst 50 setting 3 leg control 3 wire load aa o w Line 1 a AA V S mer oe wni i Su 22 Single cycle fast burst 50 setting 3 leg control 4 wire load a i X A x xX ohn Soden a x Ty x A rm Line 1 al meee ner fy Aa A a a cD cas EMC Standards Complies with the European EMC Directive for operation in an industrial environment The following standards have been applied in whole or in part in the design of this controller EN61010 1 EN61000 6 2 EN 50 081 part 2 Page 7 of 10 DIMENSIONS 6 3 91 FIXING Unit should be installed on TS35 DIN rail via DIN clip on base of control module WEIGHT DMFC36 module lt 500g Page 8 of 10 RECOMMENDATION amp SAFETY REQUIREMENTS SUPPORTING DATASHEETS FOR PRODUCTS AND APPLICATIONS Other documents which may be appropriate for your applications are available on request CODE X10772 X10213 X10255 X10322 X10789 IDENTITY DESCRIPTION 3 RFI Filter recommendation A
3. ddressing the EMC directive ITA Interaction Uses for phase angle and for burst fire control SRA Safety requirements Addressing the Low Voltage Directive LVD including Thermal data cooling Live parts warning Earth requirements and Fusing recommendations APC Application Circuits WAV Single or Dual Cycle Waveforms amp Harmonics Data NOTE It is recommended that installation and maintenance of this equipment should be carried out by Suitably qualified personnel with reference to the current edition of the I E E Wiring Regulations BS7671 The regulations contain important requirements regarding the safety of electrical equipment ROHS COMPLIANT Not for general waste Page 9 of 10 ORDER CODES DMFC36 420 460VAC 50 Hz and 24V AC DC A34571 DMFC36 480VAC 50Hz A34572 DMFC36 380 500VAC 24V AC DC input A34573 PRODUCT APPLICATION The DMFC36 offers Phase Angle Burst fire or Single Cycle Dual Cycle Rapid Burst Firing control where minimum fluctuation in heater element temperature is required This type of Rapid Burst Fire is useful if a system has a high impedance supply as a result of long power leads or if the system is powered by a generator set Normally this can result in the supply being subject to mains dips but this option minimises the Flicker effect on the mains supply Another benefit of using this type of control is that you avoid high Harmonic Distortion normally associated with phase angle con
4. ontrolled circuit The DMFC36 operating in Burst Fire mode is also commonly used in three phase 3 Wire load configurations including Closed Delta amp Floating Star where only two limbs are controlled 2 3rds controlled circuit For ease of mounting amp for protection purposes the controller comes in a DIN Rail Enclosure TECHNICAL SPECIFICATIONS Std Supply Voltage Supply Frequency Auxiliary Supply Voltage Power Consumption Internal Fusing Protection Rating Operating Temp Range Input Signal Options Output Specification Output Isolation Soft Start Ramp Speed STD Burst Fire Cycle Time Rapid Burst Fire Cycle Time Green LED indicator Red LED indicator Yellow LED indicator Safety Standards 420 460 VAC selectable via LINK J1 other supply voltages available 50 60 Hz 24V AC DC 500mA minimum 7VA 1 Amp 32mm fuse IP20 0 65 C 0 5VDC 0 10VDC 1 5VDC 2 10VDC 0 20mA 4 20mA Manual Potentiometer Pulse transformer picket fence 25kHz pulse output Initial pulse 500mA amp Sustaining pulses of 250mA 3 5 KV 0 30 seconds adjustable Minimum 1s to Maximum 30s variable Selectable via switch SW1 Single Cycle Dual Cycle variable time base selectable via switch SW1 Power ON indicating when 5 VDC is present LED ON continuously indicates phase loss between K2 phase 1 amp K2 phase 2 LED slow flashing indicates no current control signal 4 20mA LED fast flashing indicates incompatible 2 Leg control am
5. or s Timing reference inputs from K2 of Phase 1 and K2 of Phase 2 are taken from here Page 3 of 10 SWITCH SETTINGS SW1 Settings ON 1 UP OFF 0 DOWN SW1 6 way DIP switch Brown Switch ON Brown Switch OFF Orange Switch ON Orange Switch OFF ellow Switch ON ellow Switch OFF Purple Switch OFF Phase Angle Enabled Phase Angle Disabled Burst Fire Enabled Burst Fire Disabled VR1 Clockwise Dual Cycle VR1 Anti Clockwise Single Cycle Variable Burst Rate set by VR1 TIME BASE 1 to 30 seconds Offset ON Offset OFF When this switch is ON it sets an offset of 20 this mode is used for control signals which do not start from 0 such as 1 5V 2 10V and 4 20mA In this position there is no offset this mode is used for control signals starting from 0 such as 0 5V 0 10V and 0 20mA The controller is set for a 3 Wire configured load Closed Delta or Floating Star where there is no Neutral connection The controller is set for 4 Wire configured load Star to Neutral where there is a Neutral connection to the Star Point Note in this position the Green switch must be switched OFF The controller is set up to control 2 limbs L1 and L2 of a three phase load L3 is connected directly to the load Neutral must not be connected in this configuration The controller is set up to control all 3 limbs of a three phase load the star point maybe floating or connected to Neutral The controller is set for 0 1
6. p 4 Wire load selected Burst Rate indicator mimics the output burst rate Complies with European Low Voltage Directive amp major international standards Page 2 of 10 TERMINALS amp CONNECTIONS 9 way terminal block reading from Left Right 5V DC output 50mA max This supply used to feed 5VDC to the clockwise end of the manual control potentiometer or auxiliary circuit VE voltage control signal input ve control signal input from Temperature Controller or connect to wiper of a manual control potentiometer Ground OV VE voltage control VE control signal input from Temperature signal input Controller or connect to the counter clockwise end of the manual control potentiometer VE Current signal input VE Current signal input 0 20mA or 4 20mA Ground OV VE Current signal input 0 20mA or 4 20mA INHIBIT CLOSE Contacts to DISABLE shut down controller 4 5 6 INHIBIT OPEN Contacts to ENABLE the controller Common OV Line External VE 24VDC supply only required if supply to L1 and L2 are not being used 24V AC or DC input External VE 24VDC supply only required if supply to L1 and L2 are not being used Additional Connections HI LO High Low Jumper Link Select High or Low supply voltage range L1 amp L2 AC Supply input use any 2 phases or AC supply only required if 24V DC supply to phase and Neutral terminals 8 and 9 are not being used G1 amp K1 G2 amp K2 Output connections to Thyrist
7. trol typically down to levels of below 4 The DMFC36 can be started in phase angle mode and switch to burst mode when the control signal ramps up to the set point It will stay in the burst mode even if the signal drops below the set point It will restart in phase angle mode when the unit is switched off or reset Southport Business Park Wight Moss Way Southport PR8 4HQ Tel 44 0 1704 516500 Fax 44 0 1704 516501 Email sales united automation com Web www united automation com
8. united automation Itd DMFC36 User manual KEY FEATURES Standard DIN Rail Mounting Selectable modes of control Phase Angle or Burst Fire Single Cycle Dual Cycle amp adjustable STD Burst Firing On Board Indication of Power Burst Rates amp Fault conditions Inhibit input Wide Range of Control Options 0 5V 0 10V 1 5V 2 10V 0 20mA 4 20mA Manual Potentiometer On board protection fuse Isolated Pulse Transformer outputs Soft Start Auto Phase Rotation detection X20092 Issue 2 Date 31 10 14 Page 1 of 10 INTRODUCTION The DMFC36 driver module has been designed to offer both phase angle amp burst fire control of thyristor controllers driving Resistive loads The Single Cycle amp Dual Cycle options offer the fastest burst rates possible providing very accurate control and mininising Harmonic distortion amp Flicker within the system In addition the standard variable burst rate adjustable from 1 to 30 seconds is also available The DMFC36 software also includes auto phase rotation Designed to be used in conjunction with a thyristor assembly or supplied on one of our complete thyristor controllers the DMFC36 offers a highly versatile and cost effective solution in a wide variety of applications The DMFC36 is commonly used in three phase applications with both 3 Wire and 4 Wire load configurations including Closed Delta Floating Star amp Star to Neutral where all three limbs are controlled fully c
9. wo of three phases switched Burst Fire mode only 2 3 CONTROLLED 2 3 CONTROLLED F i y oa ae LINES BURST FIRE ONLY 3WIRE3PHASE NES BURST FIRE ONLY 3WIRE 3 PHASE TERMINAL CONNECTIONS Connections are made to the above terminals which will accept wires up to 1 5mm cross section The use of screened cable is not usually necessary for control signal wiring within a panel Normal precautions should be taken to keep signal wiring away from power cables in particular avoid running signal cables parallel to power cables in the same trunking See ITA datasheet for more information PHASE REFERENCE The phase references for the zero voltage detection circuit is taken from both of the K2 connections of PHASE 1 and PHASE 2 this phase reference is provided by the Cathode connections of the thyristor modules so the correct orientation of the thyristor modules is required see the schematic diagram If the line supply to either of these phases is not present the Red LED will be on continuously and the output drive will be inhibited until the supply to these phases is reinstated Page 6 of 10 WAVEFORMS TYPICAL FOR SINGLE CYCLE amp DUAL CYCLE SWITCHING The following diagrams show representations of voltage waveforms for Burst Fire Single Cycle amp Dual Cycle switching operation The heavily outlined portion of the sinusoidal train indicates when the thyristors are switched on and the lighter portion indic
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