THW Three Phase Power Controller THW Series General Description Three phase power controller has an LED display to show set values and input signals and front keys for easy setting and monitoring. Loaded with versatile standard functions, the THW operates at up to C and automatically selects power supply frequency 5 or Hz. The THW three phase power control unit can be used with control modes selectable from constant, constant current and constant power, it can be used with such heaters as noble metals (Platinum and molybdenum), super Kanthal, and SiC (Silicon Carbide) that have changing resistance in accordance with temperature changes. Features Control type selection (Phaseangle/continuous zerocross/zerocross) Rampup, Rampdown Gradient setting Limiter High and Low Three Types of Control Mode (Selectable) Phase control The wave form of the load power is switched at a desired phase angle q to provide smooth control. Zerocross control (Continuous proportion) Power is switched on and off when the supply is at. This system suppresses high frequency noise inherent to phase control. Baseup Setting (output bias) mode selection (proportional electric power//phase angle) Digital input for uto/manual Constant power control (For phase control only) This function controls the output to make its effective value power proportional to the input. It makes the THW Series suitable for heaters of which resistance gradually increases by temperature or time, such as silicon carbide type heater. This function controls its effective value power at 5% of the rating shown in the diagram below. From the diagram below, constant power control is expressed as a curve obtained from a line between two points which is a 5% of the rating of the unit; a point at % x 5% current and a point at 5% x % current. Constant power control characteristic diagram Zerocross control (Input synchronization system) Supply is switched on and off according to the pulse and contact signals from a controller. Input signal OFF O Constant current control OFF (For phase control only) This function maintains the output current constant when a load or a power supply fluctuates. It makes the THW Series suitable for heaters of which resistance greatly changes by temperature change, such as Platinum, Molybdenum, Tungsten, and Kanthal heaters. Constant current control characteristic diagram 8m m m m 8 current 8 5 m m m 8m 5m 5 8 current Load current limiter (For phase control only) This function limits the load current value to the heater. The setting range is 3 to % of the rated current. (ote) If the load has a large inrush current, use softstart function along with this function to suppress the inrush current. This function alone can not prevent the inrush current. Current limiter characteristic diagram Limiter set value % 8 % 3% 5 5 75 current % % 3% (Rated load) THW_E
Three Phase Power Controller THW Series Features Gradient Setting The relation between the setting input and the output can be set. Gradient setting is possible via front keys or an external. Control characteristics may vary with the setting as follows.. uto setting input X Internal gradient setting X External gradient setting. uto setting input X Internal gradient setting 3. Manual setting X Internal gradient setting X External gradient setting Gradient setting output characteristic diagram 8 8 Gradient setting 5 5 75 Ramp Function (Softstart & Softdown) Even if setting input changes abruptly, output changes slowly to suppress inrush current. Rampup (Startup) and ramp down (StartDown) time can be set in the range of. to 99.9 sec via front keys. Softstart & Softdown action diagram % Input signal Softstart time Softdown time Time Time Baseup setting ( bias) When the setting input is zero, the output can be set via front keys. (Baseup setting is valid when output limiter low is set to.) Baseup output characteristic diagram 8 5 5 75 limiter (High & Low) Baseup setting : % Highest and lowest output values can be set via front keys. High & Low limiter characteristic diagram 8 High limiter 8% modes When phase control is selected for linear load (R: resistor), output mode can be selected from Proportional phase angle to input, proportional to input, and proportional square (electric power) to input. Proportional phase angle to input Phase Effective angle 5 5 Proportional to input Proportional square (electric power) to input Electric power (m) (m) (m) limiter High at startup This function limits the highest output for the period of a preset time after powero and control mode change from Stop to Run. It makes the TH Series suitable for heaters which cause rush current flow, such as Halogen lamp, Tungsten, Platinum, and Molybdenum heaters. 8 Soft start High limiter output at the time of start Heater break alarm Soft start 5 High limiter 8% High limiter at the time of start % This function measures load current and compares it with a heater break alarm set value. larm will be activated if the load current goes into alarm ranges. Maximum two alarm set points can be set for the heater break alarm, which could be used for heaterdeterioration alarm and heaterbreak alarm. (ote) For phase control, heater break alarm does not work when the load current is less than 5% of maximum load current. Overcurrent alarm The alarm goes on when the load current exceeds % of the rated current. Fuse break alarm The alarm goes on when a fast blown fuse is blown. The fuse with alarm output function must be used to use this function. Event input and alarm function The contact input can be configured to Run/Stop, uto/manual or alarm interlock reset. The alarm types are reverse phase detection, power frequency abnormal, and FIL. larm output will go on, when any of them goes in alarm status. Optional heater break alarm and overcurrent alarm can be also configured as an output (alarm logic selection). 5 5 75 Low limiter % THW_E
Specifications Three Phase Power Controller THW Series Maximum Load Current C, 3 C, 5 C, C, 8 C, C Control Method Phase control, Zerocross control (Selectable) pplicable Load Phase control : Linearity (R:Resistor) load, Control of primary side of a transformer (magnetic field density 8, gauss or less) Zerocross control : Linearity (R:Resistor) load Input Signal Group (Fieldprogrammable within Group) Current input to m DC (Input impedance : Ω ) Current input to m DC (Input impedance : Ω ) oltage input to 5 DC (Input impedance : 3kΩ ) oltage input to 5 DC (Input impedance : 3kΩ) oltage pulse input / DC (Input impedance : 3kΩ ) on contact input Group (Fieldprogrammable within Group) oltage input to DC (Input impedance : 8kΩ) oltage pulse input / DC (Input impedance : 8kΩ ) oltage pulse input / DC (Input impedance : 8kΩ ) on contact input mode When phase control is selected for linearity load (R: resistor), output mode can be selected from Proportional phase angle to input, proportional to input, and proportional square (electric power) to input.) Minimum Load Current oltage Range to 98% of rated Power Supply oltage a) 9 to C (Including power supply variation) Rating : to C b) 3 to 8 (Including power supply variation) Rating : to C Power supply for control circuit is 8 to C. stepdown transformer is supplied with the main unit (Including power supply variation) Power Frequency 5/Hz (utomatic discriminating) llowable Power Frequency ariation 5Hz±Hz, Hz±Hz,(Performance guarantee range) 5 to 5.9Hz (5Hz), 55 to.9hz (Hz) (Operating guarantee range) llowable mbient Temperature Performance guarantee range: to ºC Operating guarantee range: 5 to 55ºC Operating ambient humidity 5 to 95%RH (oncondensing) bsolute humidity : MX.W.C 9.3g/m 3 dry air at.3kpa Cooling method atural convection Dielectric Between main circuit terminals, power terminals and heat sink C for one minute. Insulation resistance Between main circuit terminals, power terminals and heat sink MΩ or (5 DC) Mounting Method ertical mounting Weight pprox. 5.8kg ( to, ), pprox..3kg ( to, ), pprox. 3.kg (8,, and ) Power consumption Less than 7 ( type), Less than ( C type) Selfdiagnostic function Check item Board check, EEPROM check, djustment data check, Set value range check ction at abnormality : FIL lamp O, Thyristor output OFF (The alarm output can be output from the alarm terminals.) Setting Range Gradient setting :. to.% [Front key], to % [External setting unit] limiter (High) :. to.% [Front key] limiter (Low) :. to.% [Front key] limiter at startup (High) :. to.% [Front key] limiter time at startup (Low) :. to. sec [Front key] Baseup setting ( bias) :. to.% [Front key] Manual setting :. to % [Front key] to % [External setting unit] Standard functions Digital input (DI) : 3 points, on contact input RU/STOP, uto/manual, larm interlock reset Gradient setting (External setting unit is optional) Softup/Softdown :. to 99.9sec larm output : points Open collector output, DC, Max.m Energized/Deenergized is selectable. logic selection function. Heater break alarm *. Thyristor break alarm * 3. OR logic of heater break alarm * and thyristor break alarm *. OR logic of FIL, power frequency abnormal, reverse phase detection, overcurrent alarm *, fuse break down * 5. OR logic of all alarm *: Optional alarm type O/OFF control (External setting units are optional) Option function Heater break alarm Current measuring accuracy : ± (, 3 type) ±% of Max. load current (5,, 8, type) umber of alarm delay times : to 99 times Load current limiter Setting range : to ( type), to 33 (3 type) to 5 (5 type), to ( type) to 88 (8 type), to ( type) Table of Stability Function Constant Constant current Constant power variation Table of internal calorific value Rated load current () Internal calorific value (W) 8 Operating condition Power supply variation : Within ±% Load variation : times Power supply variation : Within ±% Load variation : times Power supply variation: Within ±% Load variation : times Stability Within ±% of full scale Within ±% of full scale Within ±% of full scale 3 5 8 8 8 7 98 37 Temperature characteristics of load current Load current 3 5 55 mbient temperature ( C ) THW_E 3
Three Phase Power Controller THW Series Specifications Type Power supply * Control method Max. load current mode Fastblow fuse *3 Optional function ccessories *,*5,* Model and Suffix Code * *3,* Model and Suffix Code Three Phase Thyristor Unit THW to C to C Phase control/zerocross control (programmable, default: phase control) C 3 C 5 C C 8 C C to 5 DC to DC to 5 DC to m DC to m DC Standard (Proportional phase angle Proportional Proportional square ) Standard Constant control Standard Constant control (with heater break alarm and load current limiter) Standard Constant current control (with heater break alarm and load current limiter) Standard Constant power control (with heater break alarm and load current limiter) o fastblow fuse With fastblow fuse (o fuse break alarm output) With fastblow fuse (With fuse break alarm output) o optional function Setter (olume, knob, Scale plate) unit (Plug) Setter (olume, knob, Scale plate) units (Plug) (Plug) * : When to C is selected as power supply, a stepdown transformer for the THW unit power supply is supplied as standard. * : is programmable within group. Group to m DC to m DC to 5 DC to 5 DC oltage pulse / DC on contact Group to DC oltage pulse / DC oltage pulse / DC on contact *3: When optional heater break alarm and load current limiter are specified, overcurrent alarm and thyristor break alarm are also supplied. *: When contact input or/and alarm output is required, specify the connector as an accessory. *5: Setters are for external gradient setting, external manual setting, and external high/low setting for on/off control. Use two units of in the following cases; When external gradient setting and external manual setting are required. High/low setting for on/off control is used. *: It is possible to specify than one accessories by adding suffix code at the end. (Example: 9) PZ PZ 3 5 8 5 7 8 E W F S 9 ccessories Gradient, Manual, High/Low : THPS 3.5 olume (Resistance:5kΩ,B) Model code ame M9X.75 Setter (plug) oltage down transformer.8 8 3 8 5 7 8 9 Scale plate 8.7 Knob * Please refer to the following codes to order accessories. Model Code ame THPS Terminal cover, 3, 5, (For main circuit THWPC terminal) 8, THWPT The terminal cover is a standard attachment. It is spare accessories..8 Unit : mm. Model Code THWP THWP Stepdown transformer : THPT 73 7 l l l3 Unit : mm * When to C is selected as power supply, stepdown transformer (For instrument power supply) is supplied. 3 ame Model Code ame Model Code 3 THWPF THWPF3 3 THWPF THWPF3 5/ THWPF 5/ THWPF Fastblow fuse 8 THWPF8 Fastblow fuse 8 THWPF8 THWPF with fuse break THWPF (Unit : piece) THWPF 3 THWPF3 5/ THWPF 8 THWPF8 THWPF (Unit : piece) THWPF3 3 THWPF33 5/ THWPF3 8 THWPF83 THWPF3 Max.7 5 5 THW_E
PHSE FUSE PHSE FUSE PHSE FUSE PHSE FUSE Three Phase Power Controller THW Series External Dimensions :, 3, 5, :, 3, 5, 3 5 (Mounting pitch) M5 (Mounting hole) Terminal Cover * 83 (Mounting pitch) ø ø 3 * 38 (When the terminal cover is mounted.) 3 3 (Mounting pitch) M5 (Mounting hole) Terminal Cover * 83 (Mounting pitch) ø ø 3 * 33 (When the terminal cover is mounted.) : 8, : 8, M5 (Mounting hole) Terminal Cover * Install the instrument as illustrated in the drawing to increase the cooling effect. ø ø 37 335 (Mounting pitch) (When the terminal cover is mounted.) Mounting direction When multiple units are installed, space between units must satisfy the rules shown in the drawing below. 3 (Mounting pitch) 3 3 * or or or or or * The terminal cover is a standard attachment. * Length includes that of an optional connector, but space for wiring to connector is not included. or Prevent metal fragments or load wire scraps from falling inside instrument to avoid electric shock, fire or malfunction. ll wiring must be completed before power is turned on to prevent electric shock, fire or incorrect action. THW_E 5
PHSE FUSE PHSE FUSE Three Phase Power Controller THW Series External Wiring Main circuit terminal (Power supply side) Main circuit terminal (Load side) Power supply terminal * type only Power lamp Display Set keys Indication lamp Input/ connector Signal input terminal Ground terminal Main circuit terminal : type only 3 Stepdown transformer * type only ø D Three phase power supply R S T FB /L 3/L 5/L3 9/ 3 8/ 7/ o. /L,3/L,5/L3, /T,/T,/T3 Item /3 5/ 8/ ø.3mm or.mm or 8.mm or D (mm) 9.5mm or.mm or.mm or less less less * The phases of the power supply wirings (R, S, T) must match those of the unit's main circuit (/L, 3/L, 5/L3). Miswiring will damage or destroy the load. /T /T /T3 * The phases of the load (U,, W) must match those of the unit (/T, /T, /T3). Miswiring will damage or destroy the load. U W Three phase Terminal size Load 7/, 8/, 9/ 3, 3.mm or 5.5mm or less to m, to m input to 5, to 5, to and pulse input Terminal size 3 Contact input Controller Controller ø D C (Common) ø D (mm) O (ormally open) 3 Controller 3.mm or 5.5mm or less Indication Lamp Lamp Contents FIL FIL FIL(Selfdiagnostic abnormality) THY_B. Power frequency abnormality PHSE Reverse phase detection OCR Heater break alarm S PHSE FUSE THY_B Thyristor break alarm OCR Heater break alarm S Over current alarm FUSE Fuse break alarm * Up to two alarm set points can be set for the heater break alarm. * Fuse break alarm lamp is available when a fast blow fuse with fuse break alarm output is used. uto setting (With gradient ) 3 5 7 8 9 Pin o. 3 5 7 8 9 uto/manual setting selection uto/manual setting selection (With gradient ) Contents 5 output (GD) Gradient setting input ( to 5 input by gradient ) Manual setting input ( to 5 input by manual ) External contact input (uto/manual setting selection) Pin o. o.5, Open : uto setting mode Pin o. o.5, Close : Manual setting mode. External contact input (RU/STOP selection) Pin o. o., Open : Stop mode Pin o. o., Close : Run mode. External contact input (larm interlock reset) Pin o. o., Close : larm interlock reset Unused DC () Open collector output () : larm output Open collector output () : larm output Manual setting (With manual ) Gradient Gradient Manual Close : Manual setting Open : uto setting Manual Close : Manual setting Open : uto setting * Gradient setting functions in both automatic and manual setting modes. Manual External contact input O/OFF control larm output (Low) (High) * When a relay is used, connect O (ormally open) an external diode or use a relay with diode inside. C (ormally close) uto/manual setting selection RU/STOP selection larm interlock reset uto/manual setting selection Contact close : Manual Contact open : uto RU/STOP selection Contact close : RU Contact open : STOP larm interlock reset Contact close : larm interlock reset C (Common) THW_E DC lrm larm