GTT 25 / 40 / 50 / 60 / 75 / 90 / 120A POWER SOLID STATE RELAYS WITH ANOG CTROL Man applcatons Plastcs extruson lnes and njecton mouldng macnes Polymerzaton plant for syntetc fbre producton Rubber mouldng macnery Drers for ceramcs and components for te buldng ndustres Cemcal and parmaceutcal ndustres Industral electrc ovens Food processng plants Man features Command nput from analogue voltage or current sgnal or potentometer. Swtcng at voltage zero crossng. Partalzaton of wave tran power wt dynamcally optmzed tme cycle. Antparallel double SCR 2 led for supply ndcaton, state, 1 optonal LED for load nterrupt alarm 4000V solaton between nput crcut and power output MOV (varstor) Optonal montorng of nterrupted load DIN ral mountng (standard); Panel mountng (optonal) PROFILE Te GTT famly of sold-state relays as been desgned wt te am of provdng very accurate control of te load tanks to an analog control nput, n voltage at 0 5V; 0 10V or n current at 0 20/4 20mA or a potentometer (from 1KΩ to 10 KΩ). Te electronc desgn ensures tat te cycle tme for proportonng te power s automatcally optmzed. Te number of cycles tat te GTT supples to te load (wave trans) for a gven nput sgnal s calculated to be te mnmum possble to mantan te necessary accuracy. Ts guarantees a very fast and accurate control loop tat enables te GTT, drven by a controller or a PLC wt analogue output, to obtan very precse control. Te GTT can be used n tree pase systems, usng master-slave control arctecture n wc te control sgnal drves only one GTT (master) and ts unt supples te syncronzed sgnals to te oter GTT slaves. Two GTS modules can also be used as slaves. A load nterrupt control opton (HB) s avalable wtout avng to use an external current transformer; alarm lmt s settable wt trmmer and yellow LED sgnal, wt voltage-free contact, normally open. Te GTT sold-state relay as a green LED to ndcate te presence of te 24Vac power supply and a red LED to ndcate te swtcng based on te analog control nput sgnal. Te LED sgnal wll be contnuous (off at mnmum, on at maxmum) at te ends of te scale, pulsng for ntermedate values. Te unts offer optonal accessores for panel mountng, fuses and fuseolders, current transformer, solaton transformers TECHNIC DATA General features Category of use AC1 Nomnal voltage - 480Vac (max. range 24...530Vac) Nomnal frequency: 50/60Hz Non-repettve voltage: 1200Vp Zero swtcng voltage: 20V Voltage drop at nomnal current 1,4Vrms Power factor = 1 Control nputs Voltage: 0...5Vdc, 0...10Vdc (mpedance 100KΩ) Current: 0...20mA, 4...20mA (mpedance 125Ω) Potentometer: from 1K to 10KΩ (auto-fed by GTT) OUTPUTS GTT 25 (SCR verson) Nomnal current: 25A@40 C n contnuous servce Non-repettve overcurrent t=20 ms: 400A I 2 t for blowout 645A 2 s dv/dt crtcal wt output deactvated:
GTT 40 (SCR verson) Nomnal current: 40A@40 C n contnuous servce Non-repettve overcurrent t=20 ms: 600A I 2 t for blowout: 1010A 2 s dv/dt crtcal wt output deactvated: GTT 50 (SCR verson) Nomnal current: 50A@40 C n contnuous servce Non-repettve overcurrent t=20 ms: 1150A I 2 t for blowout: 6600A 2 s dv/dt crtcal wt output deactvated: GTT 60 (SCR verson) Nomnal current: 60A@40 C n contnuous servce Non-repettve overcurrent t=20 ms: 1150A I 2 t for blowout: 6600A 2 s dv/dt crtcal wt output deactvated: GTT 75 (SCR verson) Nomnal current: 75A@40 C n contnuous servce Non-repettve overcurrent t=20 ms: 1300A I 2 t for blowout: 8000A 2 s dv/dt crtcal wt output deactvated: GTT 90 (SCR verson) Nomnal current: 90A@40 C n contnuous servce Non-repettve overcurrent t=20 ms: 1500A I 2 t for blowout: 11200A 2 s dv/dt crtcal wt output deactvated: GTT 120 (versone SCR) Nomnal current: 120A@40 C n contnuous servce (complete wt fan and standard termostat). Non-repettve overcurrent t=20 ms: 1500A I 2 t for blowout: 11200A 2 s dv/dt crtcal wt output deactvated: Isolaton Rated solaton voltage nput/output: 4000Vac Ambent condtons Workng temperature: 0 to 80 C (see te dsspaton curves) Max. relatve umdty: 50%...40 C Max. nstallaton alttude: 2000m asl Polluton level: 3 Storage temperature: -20..+85 C Power supply: 24Vac ±10%, 50/60 Hz Absorpton: 1.5VA Max. solaton voltage: 300Vdc Optons: Interrupted HB load alarm. Controls te load by measurng current on a sunt nsde te devce. Te alarm lmt s set wt a multrev monorev trmmer. Te alarm output s obtaned by means of a sold state relay. Te contact s normally open (max. 30V, 150mA, conducton resstance 15 Om). Installaton notes Use te g-speed fuse specfed n te catalog accordng to te connecton example gven. - Applcatons wt sold state power unts must also nclude an automatc safety swtc to cut out te load power lne. In order to obtan best relablty, t s mportant to nstall a eatsnk correctly nsde te panel, to reac an adequate termal excange between te devce and te surroundng ar n natural convecton condtons. Mount t vertcally (max. 10 dnclnaton from te vertcal axs) Vertcal dstance between a devce and te panel walls >100mm Horzontal dstance between a devce and te panel walls: at least 20mm Vertcal dstance between devces: at least 300mm. Horzontal dstance between devces: at least 20 mm. Make sure tat te wre raceways do not reduce suc dstances: f tey do, nstall te groups cantlevered to te panel so tat ar can flow vertcally over te eat snk wtout obstructons. Attenton: f you replace a GTT from an earler seres, note te followng: - te GTT cannot be used as a slave of a master GTT from a prevous seres; - te GTT can drve a slave from a prevous seres only f a 10kW resstance s connected n seres to te master/slave connecton - see te connecton examples. Lmts of use Dsspaton of termc power on te devce wt restrants on te ambent temperature of te nstallaton. Equp te cabnet wt an external ar cange or ar-condton t, to put out dsspated power. Installaton restrants (dstances to be respected to grant dsspaton wt natural convecton). transstor max. voltage and dervatve lmts, for wc te sold state relay s equpped wt nsde safety devces (based on te models). Leakage current < 3mA for SCR verson GTTs. (max. value wt rated voltage and juncton temperature of 125 C)
WORKING TYPOOLOGY Zero crossng wt varable cycle tme Examples of te operaton of te GTT for dfferent values of te nput drve sgnal and te consequent dfferent cycle tmes (100msec and 40msec respectvely) V Example of nput at 20% = 2V (IN 0-10V) or 4mA (IN ) V=Voltage across load 100msec Logc output control for GTT V Example of nput at 50% = 5V (IN 0-10V) or 10mA (IN ) V=Voltage across load 40msec GTT termal protecton Control nput OFF t Red LED Red LED Termal alarm V = voltage t t Termal protecton actvaton
FACEPLATE DESCRIPTI Syncronsm sgnal for Master/Slave connecton Alarm output (sold state relay, HB opton) - control sgnal + control sgnal Reference voltage for potentometer power supply (+ 10V) 24 V ac 50/60 Hz power termnal Green LED (power on), Red LED (GTT runnng) Red LED (termal alarm), yellow LED (load nterrupt alarm, HB opton) a b Monorev trmmer for mnmum calbraton of nput sgnal Monorev trmmer for calbraton of load nterrupt (HB) alarm lmt c g d e f Dp swtc for selecton of nput sgnal (S1, S2, S3) Monorev trmmer for maxmum calbraton of load sgnal LINE connecton LOAD connecton Reference connecton of 230V lne voltage (HB opton wt 150V to 300V load) Reference connecton of 480V lne voltage (HB opton wt 300V to 530V load) CIBRATI PROCEDURE OF THE INPUT SIGN Te sold-state power unt, GTT, s suppled factory calbrated for,,, nputs, 10Kom potentometer. Mnmum and maxmum values are adjusted wt two monorev trmmers (d,e). sgnal type s selected wt te f adjustment dp swtces (S1,S2,S3). Control sgnal Dp Swtc Poston S1 S2 S3 0...5Vdc OFF OFF 0...10Vdc OFF 0...20mA OFF 4...20mA OFF OFF e d 96% 82% 18% 4% V/mA In T V/mA In On 0-5V Off 0-10V f S1-S3 Rn 100KΩ 100KΩ 125Ω 125Ω Mnmum adjustment trmmer (d) turned fully counterclockwse sets te start conductng lmt at 4% of te sgnal; turned fully clockwse, te mnmum conductng lmt s set at 18% of te nput sgnal. Maxmum adjustment trmmer (e) turned fully clockwse sets te full conductng lmt at 96% of te sgnal; turned fully counterclockwse, te full conductng lmt s set at 82% of te nput sgnal<
INTERRUPTED LOAD ARM Te nterrupted load alarm functon enables te GTT to dagnose a varaton of te load current (compared to a set lmt), dstngusng t from one caused by a cange n grd voltage. e. Te sold state power unt must terefore be suppled wt te voltage appled to te load termnals,.e.: LOAD (): already connected nternally; LINE ( or ): connect termnal for voltages from 150 to 300V; connect termnal for voltages from 300 to 530V. Te alarm actvates (relay closed and yellow alarm LED on) wen te current, durng te conducton of te devce, falls below a preset level tat may be adjusted usng te trmmer on te faceplate. Calbrato procedure (refer to te faceplate descrpton drawng) 1) Use te adjustment system (or a calbrator) n order to supply te maxmum sgnal (100% conducton or tered LED always llumnated). As an alternatve, you can confgure te GTT to 0-10 V DC nput confguraton and connect termnals 5 and 6. 2) Use a current sensng plers to ceck tat te load current s at rated level. 3) Turn alarm lmt adjustment trmmer (g) fully clockwse. Ceck tat yellow alarm LED (b) turns on. 4) Slowly turn trmmer (g) counterclockwse untl te alarm LED turns off. 5) Turn te trmmer counterclockwse anoter 1/10 of a turn (1 notc on te scale). In ts way, te alarm lmt s set below 10% of te rated load current. N.B: te partal load break alarm functon operates wt power partalzaton exceedng 15%. For partalzatons below 20%, trppng tmes ncrease due to te reduced load actvaton tme. For correct operaton of te opton, te load current as to exceed 30% of rated current for te GTT. Notes on use of te GTT wt te dgtal On/Off control - Te logc control sgnal as to be connected wt te correct polartes to termnals 4 and 5 of te analog nput. - Turn mnmum adjustment trmmer (d) fully counterclockwse and maxmum adjustment trmmer (e) fully clockwse. - Set te 3 dp swtces (f) to off. For applcatons wt a very sort work cycle, you can drve te sold state group by means of te Master/Slave sgnal by drvng t wt a dgtal sgnal (OFF = 0 V dc; = from 4 V dc to 10 V dc) Inbtng te GTT You can nbt operaton of te GTT by means of te Master/Slave sgnal. To nbt, connect control sgnal - (4) wt te syncronsm sgnal for Master/Slave connecton (3). Notes on use of te GTT n Master/Slave confguraton Te GTT can be used as a master to drve oter sold state groups (slaves). Wt Master/Slave sgnal (3), you can drve up to 9 GTTs (see connecton examples for GTT sold state power relays wt tree-pase load). You can also use a GTT to drve GTS sold state power relays (maxmum of 2), as sown n te connecton dagrams for GTT/GTS sold state power relays wt tree-pase load (attenton: te HB opton cannot be used for a tree-pase applcaton wt neutral).
DISSIPATI CURVES Rated current curves based on room temperature. GTT 25 / 40 GTT 50 / 60 GTT 75 / 90 / 120 Te GTT 120 curves refer to te devce complete wt standard fan runnng. TABLE FOR TERMIN CHOICE OF POWER TERMIN BOARD CTROL TERMIN POWER TERMIN GROUND TERMIN Contact Pre-solated Max. secton ** Sze area wre termnal conductor (WxD) tgtenng screw type torque 25/40A 6,3x9 Eye/fork/ 2,5mm 2 50/60A M3 tp 0,6Nm Max 75-90A 6,3x9 Eye/fork/ 2,5mm 2 M3 tp 0,6Nm Max 120A 6,3x9 Eye/fork/ 2,5mm 2 M3 tp 0,6Nm Max Contact Pre-solated Max. secton ** area wre termnal wre (WxD) tgtenng screw type torque 16x18 Eye/fork 50mm 2 M6 3,5-6 Nm 16x18 Eye/fork 50mm 2 M6 3,5-6 Nm 16x18 Eye/fork 50mm 2 M6 3,5-6 Nm Contact Max. secton ** area conductor (WxD) tgtenng screw type torque 14x16 50mm 2 M5 1,8-2,5Nm 14x16 50mm 2 M5 1,8-2,5 Nm 14x16 50mm 2 M5 1,8-2,5 Nm (**)Te maxmum sectons ndcated refer to unpolar copper wres wt PVC nsulaton. Note: you ave to use an eye termnal for te ground connecton. (WxD) = wdt x dept
DIMENSIS AND CUT-OUT GTT 25- GTT 40 GTT 50 - GTT 60 GTT 75 (wtout fan) GTT 90 (wtout fan) GTT 120 (wt fan) 60 mm 80 mm 127 mm 1 2 Alarm Out 3 Master Slave 4 5 6 7 8 1 2 3 4 5 6 - + - + - + +10 Vdc Analog Out Out Slave Analog Out Out Slave Analog Out 7 8 24 Vac 30mm 108 mm 100 mm GTT 60A/480 Vac GTT 120A/480 Vac 230 V 480 V 230 V 480 V 230 V 480 V 18mm dept = 142mm (*) wegt = 900g dept = 142mm (*) wegt = 1200g 50mm (max) dept = 142mm wegt GTT 90 = 1300g wegt GTT 120 = 1700g TEMPLATE DIMENSIS W M5 L GTT 25-40 - 50-60 GTT 75-90 - 120 L (mm) 112 112 W (mm) 44 113
CNECTI EXAMPLES Sngle-pase connecton wt optonal montorng of nterrupted load (command nput from analog sgnal or potentometer) Relay output - Alarm (sold state relay) * Potentometer Dgtal output 0-10Vdc 0-5Vdc 1 2 Alarm Out 3 Master Slave 4 5 6 - + +10 Vdc Analog Out 7 8 24 Vac * Connectons regardng te load nterrupted opton (see paragrap Interrupted load alarm) Note: connect or accordng to te load tenson. 24Vac 1,5VA 230 V 480 V Pase Neutral Star or delta tree-pase connecton wtout neutral, wt control of two pases. * Relay output - Alarm (Sold state relay) * Connectons regardng te load nterrupted opton (see paragrap Interrupted load alarm) Note: connect or accordng to te load tenson. 1 2 Alarm Out 3 4 5 6 7 8 1 2 Master Alarm Slave Analog Out Out 3 4 5 6 7 8 Master Slave Analog Out 24Vac 3VA Potentometer Dgtal output 0-10Vdc 0-5Vdc 230 V 480 V 230 V 480 V Tree-pase connecton Star connecton Pase R Pase S Pase T
CNECTI EXAMPLES Tree-pase star connecton wt neutral. * Relay output - Alarm (sold state relay) Potentometer Dgtal output 0-10Vdc 0-5Vdc Out Slave Analog Out Out Slave Analog Out Out Slave Analog Out 230 V 480 V 230 V 480 V 230 V 480 V 24Vac 4,5VA * Connectons regardng te load nterrupted opton (see paragrap Interrupted load alarm) Note: connect or accordng to te load tenson. Neutral Pase R Pase S Pase T Star or delta tree-pase connecton wtout neutral, wt control of tree pases. Relay output - Alarm (sold state relay) * Connectons regardng te load nterrupted opton (see paragrap Interrupted load alarm) Note: connect or accordng to te load tenson. 1 2 3 4 5 6 +10 Vdc +10 Vdc Out Slave Analog Out 24 Vac Out Slave Analog Out 230 V 480 V 230 V 480 V 7 8 24 Vac * 1 2 3 4 5 6 +10 Vdc Out Slave Analog Out 230 V 480 V 7 8 24 Vac 24Vac 4,5VA Potentometer Dgtal output 0-10Vdc 0-5Vdc Pase R Pase S Pase T
CNECTI EXAMPLES Tree-pase connecton (trangle or star) wtout neutral, wt control of two pases usng one GTT n Master confguraton and one GTS n Slave confguraton. Relay output - Alarm (sold state relay) Potentometer Dgtal output 0-10Vdc 0-5Vdc * Connectons regardng te load nterrupted opton (see paragrap Interrupted load alarm) Note: connect or accordng to te load tenson. + 6 32Vcc /OFF Control GTS 60A/480 Vac Out Slave Analog Out GTT 50A/480 Vac 24Vac 1,5VA 230 V 480 V Tree-pase connecton Star connecton Pase R Pase S Pase T Tree-pase star connecton wt neutral usng one GTT n Master confguraton and two GTSs n Slave confguraton. Potentometer Dgtal output 0-10V 0-5V + 6 32Vcc /OFF Control + 6 32Vcc /OFF Control 1 2 3 4 5 6 +10 Vdc Out Slave Analog Out 7 8 24 Vac 24Vac 1,5VA GTS 60A/480 Vac GTS 60A/480 Vac GTT 60A/480 Vac 230 V 480 V Neutral Pase R Pase S Pase T
ACCESSORIES A wde range of accessores s avalable (ncludng fuses and fuse olders, supports for fastenng DIN bar, ID plates, termostats, current transformers and solaton transformers). To coose accessores, see te secton "Sold state relays - Accessores." ORDER CODE Model Nomnal current 25Aac 40Aac 50Aac 60Aac 75Aac 90Aac 120Aac (*) GTT 25 40 50 60 75 90 120 GTT / 480 - - (*) Specfy fan supply: 115Vac or 230Vac Nomnal voltage 480Vac nterrupt (HB) opton Wtout opton Wt load nterrupt opton 480 0 1 Fan (for model 120A only) Fan 80x80x40 VEN90 230V 14W Fan 80x80x40 115V 14W VEN91 Please contact GEFRAN personnel for nformaton on avalablty of codes. WARNINGS! WARNING: ts symbol ndcates danger. Before nstallaton, please read te followng advces: follow te ndcatons of te manual scrupulously wen makng te connectons to te nstrument. use a cable tat s sutable for te ratngs of voltage and current ndcated n te tecncal specfcatons. f te nstrument s used n applcatons were tere s rsk of njury to persons and damage to macnes or materals, t s essental tat t s used wt an auxlary alarm devce. It s advsable to verfy frequently tat te alarm devce s functonal even durng te normal operaton of te equpment. Te nstrument must NOT be used n envronments were tere could be te presence of dangerous atmosperes (nflammable or explosve). Durng contnuous operaton, te eatsnk may reac 100 C and reman at a g temperature due to termal nerta even after te devce s swtced off. Terefore, DO NOT touc te eat snk or te electrcal wres. do not operate on te power crcut untless te man supply s dsconnected. DO NOT open te cover f devce s! (use te oles n te cover for eventual re-calbraton). Installaton: connect te devce to te ground usng te proper ground termnal. te power supply wrng must be kept separate from tat of nputs and outputs of te nstrument; always ceck tat te supply voltage corresponds to tat ndcated on te nstrument cover. evtare la polvere, l umdtà, gas corrosv, le font d calore. keep away from dust, umdty, corrosve gases and eat sources. Te connecton cable must be sorter tan 3 meters f te current transformer s used. Mantenance: Ceck te correct operaton of te coolng fans at regular ntervals; clean te ventlaton ar flters of te nstallaton at regular ntervals. Repars must be performed only by specalzed or approprately traned personnel. Cut off power to te devce before accessng nternal parts. Do not clean te box wt solvents derved from ydrocarbons (trcloroetylene, gasolne, etc.). Usng suc solvents wll compromse te mecancal relablty of te devce. To clean external plastc parts, use a clean clot wet wt etyl alcool or water. Tecncal servce : GEFRAN as a tecncal servce department. Defects caused by use not conformng to te nstructons are excluded from te warranty. GEFRAN spa reserves te rgt to make any knd of desgn or functonal modfcaton at any moment wtout pror notce C US Conformty C/CSA/US certfcate nr. LR188658-1345925 (upon request) Ts devce conforms to European Unon Drectve 89/336/CEE and 73/23/CEE as amended wt reference to generc standards: CEI-EN 61000-6-2 (mmunty n ndustral envronment) EN 61000-6-4 (emsson n ndustral envronment) - EN 61010-1 (safety regulatons). GEFRAN spa va Sebna, 74-25050 Provaglo d Iseo (BS) Tel. 03098881 - fax 0309839063 - Internet: ttp://www.gefran.t cod. GTT - 03/05