USER MANUAL - Power Full Stop
Contents
1. Power Sp z ul Cienista 15 37 ENGLISH 43 100 Tychy Poland sor Tel 48 32 7240531 Stele Fax 48 32 7882271 email office powerfullstop com nothing else www powerfullstop com USER MANUAL RELAYS PTC MODEL PWROS 1 AUXILIARY POWER SUPPLY AUXILIARY POWER SUPPLY e Rated voltage 24 240 Vac dc e Maximum ratings 20 270 Vac dc e Vdc with reversible polarities INPUTS e 3 serie of PTC inputs 1 serie for ALL1 1 serie far ALL2 1 serie far FAN removable rear terminals e input channels protected against electromagnetic noises and spikes OUTPUT e 2 alarm relays ALL1 ALL2 e 1 alarm relay for fan control FAN with time delay off 5 10 20 40 min e output contacts capacity 5A 250Vac res TESTS AND PERFORMANCES e assembling in accordance with CE rules e protection against electrical and magnetic noises CEI EN50081 2 50082 2 e dielectric strength 2500 Vac for 1 minute from relays to sensors relays to power supply power supply to sensors e ambient operating temperature 20 C to 60 C e humidity 90 no condensing e ABS self extinguishing housing NORYL 94VO e Opt Protection treatment of electronic part e Frontal in polycarbonate IP54 e Burden 2 VA e Data storage 10 years minimum e Self diagnostic circuit DISPLAYING AND DATA MANAGEMEPIT e Led indicating alarm Trip channel or fan e Led indicating fault e 2 alarm thresholds e 1 alarm ON threshold2. for fan control e entering the programming by frontal push button e automatic output from programming cycle after 1 minute of no operation DIMENSIONS PWRO8 e 90 x 105 mm DIN 43700 prof 75 mm The PWRO8 is the most advanced unit on the market as regards temperature monitoring units for MT cast resin transformers which utilize PTC sensors The unit gives the ALL1 pre alarm arid TRIP signals when the temperature Iimits pointed out by the PTC of the windings are reached The PWRO8 is arranged to control the cooling ventilation of the transformer The unit controls continuously the efficiency of PTC sensors and when one of these is detective you have immediately a signal of detective sensor The FAN relay is energized until temperature is superior than ONAT value when the temperature gets down under this value the relay is still energized for the established ventilation time 5 10 20 40 delay function As the PTC actually produced by all the European manufacturers have different specifications among the Power is not answerable for wrong functioning of the control system caused by PTC with different resistance values from those indicated in TAB 1 2 USE AND PROGRAMMING A PWRO8 FAN programming cycle B PWRO8 Alarm relay test C PWRO8 FAULT PTC sensor D PWRO8 diagnostic device for PTC ITEM A NOTE PB push button MOM momentary CONT continuously POS ACTIONS RESULTS give voltage to the unit the GR
3. the relay doesn t operate for this reason the respective PTC can be left out If the FAN is ON the relay operates from the first signalling of the respective PTC and the FAN led is ON The relay is ON during all the time in which the PTC indicates the threshold overcoming When the PTC checks the normal temperature the PWRO8 unit keep the relay ON for all the time signed during the programming and the FAN led lightens When the time is expired with a normal temperature the relay doesn t operate anymore and the LED switches OFF 6 DIAGNOSTIC DEFECTIVE PTC SENSORS If one a the PTC is in short circuit or it is interrupted you have the following signaling PTC alarm 1 Fault led ALL1 flashing PTC trip ALL2 Fault led ALL2 flashing PTC fan FAN Fault led Fan The trouble is not signalled if one of PTC serie is interrupted when its total resistance are already TRIP threshold 7 WARRANTY The PWR units under warranty for 24 months from the delivery date signed on the unit The warranty is recognized when the unit breaks down due to some production faults or insufficient calibration the warranty is not valid when tampered with or when it has been damaged for a wrong sensor connection or wrong power supply out of the max working Iimits 20 270 Vac dc The warranty is not valid when the unit has been fulminated by excessive transitory voltage In this case Power is not answerable for damages caused by faulted or defect
4. EEN led lights push mom the P B L TEST two times the red led PRG T FAN light flashing within 5 push the P B until the led the led PRG L TEST is lighted PRG L TEST is lighted fixed fixed push mom the P B L TEST the red led switches from T1 T4 FAN time 5 40 stop the push the P B when the led is ON the Tx corresponds to the requested time end of FAN cycle programming all the leds are switched OFF IF YOU DO NOT NEED ANY FAN CYCLE When you are at the point 4 you have one passage without any led lighted ON The unit is programmed only for L1 and L2 alarm and disconnecting ITEM B push the P B mom three time in the leds T1 2 3 4 are lighting in sequence sequence within 5 push cont the P B until the the leds T1 2 3 4 are lighting all leds are lighting all together together after 5 the relay FAN is ON then 11 12 leds and relay of FAN L1 L2 are ON are ON end of TEST CYCLE all the red leds are light OFF One of the PTC is Short Circuit The red led FLT and the corresponding led L1 L2 L3 L4 are flashing Replace or repair the PTC The leds are light OFF ATTENTION if you PWRO8 has not the right PTC model connected the leds lighten the PTC temperature at delta NAT T 13000hm COOLING FAN CYCLE DELAY ON the PTC FAN is ON the FAN relay is ON and the red led is switched ON the temperature decre
5. ases under the the FAN relay remains ON for the PTC value fixed time and the red led flashing until the end of the selected time if the temp raises again over the PTC the ed stops to flash and remains val fixed ITEM D The PWRO8 is provided in the standard version with the option diagnostic device for PTC connected This software device could be connected or not with the following easy procedure to disconnect the diagnostic device for PTC give power supply to the unit pushing the L TEST button and keep it pushed till the YELLOW FAULT LED is ON to connect the diagnostic device for PTC give power supply to the unit pushing the L TEST button and keep it pushed till ALL THE LED are OFF 3 ALARM 1 RELAY FUNCTIONING The 1 relay operates when the unit is powered with the N O contact OFF The relay de energizes and the contact is OFF when there is an alarm of the L1 PTC or when the unit is damaged The ALL1 relay has the function of the PTC sensor FAULT If this relay operates during the lighting of the frontal FAULT LED it means that there is an error in the reading or the PTC sensor It is possible to find it thanks to a second lighting which corresponds to the FAULT channel 4 ALARM RELAY 2 TRIP The ALL2 relay operates when there is an alarm on the L2 PTC 5 FAN RELAY During the programming it is possible to plan the cooling time or to take the FAN option OFF If the FAN is OFF
6. esistance values that are in accordance with the working program of the unit This makes possible to simulate the complete functioning of the unit as well as to verify the PTC diagnosis circuit The PWRO8 has been engineered to make simple and uncostly the thermic control or electric units such as soon as the transformer reaches the temp Values equal to the PTC ONAT fixed into the transformer windings The PWRO8 further provides to drive the fan cooling system when it is equipped with the suitable PTC serie It is also widly used for electric motors temp Protection Unique in its kind the PWRO8 makes the PTC status diagnostic This detail gives to the unit and than to the control system a very high safety factor To obtain all this Power engineering staff made a wide research and a deep study of the PTC produced in Europe On the base of these studies it has been fixed a PWRO8 working program that allows the unit to work with almost all the PTC produced by European manufacturers 13 HOW TO USE Connect the multiple plug to the sensors input of the PWRO8 Set the three switches on the NOR position In case the unit is NOR programmed for FAN Control operate only with L1 and L2 switches 14 ALARM TEST L1 amp L2 Set the switches L1 and L2 on the TRIP position On the PWRO8 the L1 and L2 Ieds light ON and the corresponding relay switches ON 15 FAN TEST Set the switches FAN the position TRIP The FAN led on the PWRO8 wil
7. ive unit All the delivery expenses there and back of the unit must paid by the Customer ANIMA prices Col C PS In order to verity the functioning of the unit we suggest the use of our simulator mod SIM PTC 8 IMPORTANT NOTICE Before making the insulation test on the electrical panel on which the unit is installed you must take it off from the power supply line in order to keep it out of damage 9 TEMPERATURE SENSOR PTC We can compare the PTC to the electronic bimetallic thermoswitch which contacts close or open in a range of temperature that is their work characteristics ONAT working temperature The thermostat is set only for one working temp which can change from 60 up to 180 with increasing steps of 10 C 60 70 80 90 100 110 120 130 140 145 155 160 170 180 The bimetallic thermoswitch has the electric contact that opens or closes at different temperatures always around at of the working temperature ONAT The difference between the opening and the closing temp Represents the working differential of the thermostat AT Highly accurate and expensive bimetallic thermoswitch are able to control the temp between 1 C of ONAT The common bimetallic thermostat has control accuracy that is 3 5 C The PTC are electronic temp Sensors which change their electric resistance depending on the temp Picked up The ONAT does exist as for the bimetallic thermostat so for the PTC The PTC do not allow an accura
8. l Iight fixed The FAN relay switches ON Fix the FAN switches on the NOR position the FAN led starts to flash for a time corresponding to the programmed one FAN CYCLE At the end of the programmed FAN time the FAN led stops to flash and goes OFF the FAN relay returns to N O position 16 SENSORS DIAGNOSTIC The PTC sensors have two possible failures one open circuit Foc and the other is short circuit Fcc On the simulator there are two Foc conditions the first Is referred to the resistance value higher than 200 KQ that simulates The PTC resistance value at ONAT 30 40 C We match this condition on the PTC FAN when being running the cooling fans the trans former continues to increase its temp In this condition the temp Monitoring unit does not give alarm neither stops the ventilation The same working philosophy is applied to L1 and L2 PTC The Foc2 position simulates the PTC circuit undoubtedly open In order to simulate the PTC open circuit and to verify the corresponding indication on the PWRO8 you must move rapidly the switch from the position NOR to Foc2 The PWRO8 will show with flashing led which of the three PTC or serie is definitely open In this case the 1 relay shall switch in pos 6 7 It Is useful to repeat what we already mentioned in the instruction manual that s to say that when a PTC reaches and overcomes the ONAT If it happens a Foc Fcc condition the Fault will be not displayed This auto diagn
9. osis program performance allows to give the display priority to the ALARM and FAN functions If during the simulation the PWRO8 does not react in proper way please contact Power RESISTANCE VALUES OF SIM PTC FUNCTION RESISTANCE VALUES TRIP 2 0 K NOR 220 FCC 4 8 1 500 K FCO 2 PWRO8 TEST DESCRIPTION The unit was submitted to the following tests during the production Number DESCRIPTION PC board test Input test Test of relay contacts and outputs Key test Lamp test Calibration at 100 and 200 for temperature monitoring units Software test TL OO INI Burn in minimum 24 H PTC electrical connection alarm relay PTC L1 PTC L2 PTC FAN 5 6 7 11 12 CH1 CH2 CH3 42 R POWER SUPPLY 41 6 24 240 VAC DC N WHEN THE POWER SUPPLY IS L1 TFEMPFRATIIRE 5 NAT 5K NAT ISK NAT 5K SNAT 5K ELECTRICAL CONNECTION MOD PWR08 Front side 3 a z 3 OMEGA for DIN mountig N B L1 RELAY IS USUALLY ENERGIZED Lateral sight
10. te temp Control because their ohmmic characteristical values are fixed to 5 K to 5 K of ONAT The characteristical resistance values of the PTC are defined by the Norme DIN 44081 44082 Being very steep the PTC curve in the out line included between ONAT 5 and ONAT 5 makes the control in a temp Range lower than 5 K very difficult If they are used in alarm system obviously the PTC do not assure high accuracy 10 TECHNICAL SPECIFICATION FOR PTC TEMPERATURE RESISTANCE VOLTAGE TEST VCC From 20 to ONAT 20 K From 20 to 250 lt 2 5 At ONAT 5 K lt 550 2 5 At ONAT 5 K 21330 2 5 At ONAT 15 K 24000 lt 7 5 impulse voltage Electrical insulation 2500 Vca Maximum working voltage 30 11 PTC RESISTANCE VALUES ACCEPTED TO CONWECT THE PWROB TAB 1 RESISTANCE 2 FOR SINGLE PTC OR MULTIPLE IN FUNCTION SERIE NO ALARM Temperature of the machine under the alarm set HIGHER THAN 502 ALARM Alarm set reached for HIGHER THAN 18000 FAN ALL TRIP FOC Sensor circuit Open Circuit HIGHER THAN 200KQ With fast increase lt 3 FCC Sensor circuit Short LOWER THAN 15 Circuit 12 SIM PTC ELECTRONIC SIMULATOR FOR PTC FOR MONITORING UNITS MOD PWR08 This simple and economic PTC simulator has been realized for testing the functioning of the temp electronics units Mod PWRO8 The external switches insert step by step different r
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