SAFETY RELAY NE1/4-D
Contents
1. 14 24 34 44 Y2 Fig 1 Functional circuit diagram of NE1 4 D relay on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI Terminal Function Connection A1 24VDC or AC supply A2 GND or AC supply U1 K1 First input channel N O Safety contact from the master relay K21 U22 IN N O Safety contact from the Y1 Y2 FEEDBACK output to connect to the master relay 13 14 First safety output N O 23 24 Second safety output N O 33 34 Third safety output N O 43 44 Fourth safety output N O Table 1 Connections 44 close while the feedback contact Y1 Y2 opens The OUT OFF LED switches OFF and the Channel 1 amp Channel 2 LEDs switch ON When one or both input contacts open the safety outputs 13 14 23 24 33 34 43 44 open while the feedback contact Y1 Y2 Fig 2 DIN Rail mounting closes The OUT OFF LED switches ON and the Channel 1 8 Channel 2 LEDs switch OFF RESULT Y If the NE1 4 D is configured for one channel input when the input contact opens the power supply of the safety relay is switched off so all LEDs are switched off 4 MOUNTING AND OPENING The unit should be panel mounted in an enclosure rated at IP 54 or better otherwise dampness or dust could lead to function impairment ACTIVITY Y There is a notch on the rear of the unit for DIN Rail mounting Carry out the wire appropriate to on 8772. 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI the use of the unit according to contacts of the external the application examples shown in contactors This series must be this user s manual connected to the master safety 5 ELECTRONIC relay so that it can check the a CONNECTION integrity of the external n contactors and of the NE1 4 D WARNING relay v The safety relay NE1 4 D is 5 2 Close input circuit designed for applications up to category 4 according to EN ACTIVITY 954 1 The user must be Y Single Channel informed that the safety category of the whole system is defined by the safety parts safety output of the master characterized by the lower relay and the second terminal safety category within the to the A1 terminal of the NE1 4 system D safety relay 5 1 Close the feedback Connect a bridge between K1 Connect the positive power supply to the first terminal of the d He aii the U1 and between K21 U22 ACTIVITY ACTIVITY Y Dual channel Connect the safety contacts from the master relay to U1 K1 and to K21 U22 input terminals Y Connecting Y1 Y2 The terminals Y1 Y2 must be connected in series to the N C 2 N O Safety Contacts Power supply from UT Relay 1 N O Safety Contact Master Relay A1 A2 Single Channel Dual Channel Fig 3 Single and dual Channel input connection diagram on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI 5 3 Supp
3. Temperature 25 C 55 C Humidity Altern Cycle 95 0 50 C Terminal type DIN VDE 0470 Part 1 IP 20 Housing type DIN VDE 0470 Part 1 IP 40 Shock resistance DIN VDE 0160 59 33 Hz on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI on 877 268 3700 www carlogavazzisales com sales gross LE F2 3001 SAIET reserves the right to make improvements or changes without prior notice Mod 3225 XII 02 on 877 268 3700 www carlogavazzisales com sales gross
4. SAFETY RELAY NE1 4 D User s manual CARLO GAVAZZI y SAIET Elettronica S p A A Member of CARLO GAVAZZI Group via Serenari 1 40013 Castel Maggiore BO Italy Tel 39 051 4178811 Fax 39 051 4178800 http www saiet it elettronica E mail sales el saiet it on 877 268 3700 a G sales gross Index TS INTRO DWC TION E 3 2 SAFETY INDICATIONS oiii ella 3 3 ASSEMBLY AND FUNCTION i 4 3 1 Power supply terminals cesses 4 3c AUT TONING esca oan he LL 4 30 STAREMO M E 4 om PUI CH OWN M 4 4 MOUNTING AND OPENING i 5 5 ELECTRONIC CONNECTION ccccccecssesseeeeeeeeeeeeeeseaeeeeeeeees 6 5 1 Close the feedback control loop and the activation circuit 6 9 2 OS INOUE CIOU ose e e 6 Sto OUDDIV VOllQUO d dini 7 6 MAINTENANCE AND REPAIR 7 7 PFAUETABIAGNOSIS cit 7 8 APPLICATION EXAMPLES tcs 8 9 WIRING HINTS FOR OUTPUT TERMINALS 8 10 TEGENIGALE DATA rails 8 on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI 1 INTRODUCTION This operating instruction is referred to the emergency stop and safety gate monitoring relay NE1 4 D 24 Vac dc and to the models supplied with an AC power supply and named NE1 4 D xxx where xxx is the AC supply voltage The NE1 4 D name used in this manual is referred to all the models DC and AC supply if not d
5. ifferently specified These instructions are addressed to the following persons Qualified professionals who plan and develop safety equipment for machines and plants and who are familiar with the safety instructions and safety regulations Qualified professionals who install safety equipment into machines and plants and put them into operation This user s manual contains several symbols which are used to highlight important information WARNING Y This title is placed in front of text which has to be absolutely paid attention to Nonobservance leads to serious injuries or damage to property IMPORTANT Y This title is placed in front of text which contains important information ACTIVITY Y This title is placed in front of activities RESULT v After this title follows a description on how the situation has changed after an activity is performed 2 SAFETY INDICATIONS Application The safety relay NE1 4 D can be used for safety contact extension in safety related parts of control systems IMPORTANT Y Person and object protection are not guaranteed if the safety relay is not used according to the defined application WARNING FOR YOUR SAFETY Please note the following points Y The unit should only be installed and operated by persons who are familiar with both these instructions and the current regulations for safety at work and accident prevention v Follow local regulations as
6. ly voltage ACTIVITY Y Single Channel The supply voltage Uv L has to be connected over the contact from the master safety relay to the terminals A1 of the relay The supply voltage Uv N has to be connected directly to the terminal A2 of the safety relay When using AC supplied version take care of the safety insulation ACTIVITY Y Dual Channel The supply voltage has to be connected directly to the terminals A1 and A2 of the safety relay WARNING v Please note the maximum length of the cables 6 MAINTENANCE AND REPAIR The safety relay NE1 4 D is maintanence free In event of failure it is possible to change the defective device with a new one following the steps described below Switch off the relay and remove the wiring from the device Take off the defective device from the DIN Rail Mount the new device on the DIN Rail Insert and fix the wiring on the new device T FAULT DIAGNOSIS Earth Fault AC DC version with electronic fuse protection An electronic fuse forces the output contacts to open As soon as the fault cause is removed and the rated power supply is applied the device is ready for new operations Fig 4 Change of the NE1 4 D safety relay on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI Faulty contact condition In the event of welded contacts further activation is not possible following the opening of the input circ
7. regards preventative measures v Any guarantee is void following opening of the housing or unauthorized modifications on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI Y Avoid mechanical vibrations greater than 5 g 33 Hz when transporting and in operations Y The unit should be panel mounted in an enclosure rated at IP 54 or better otherwise dampness or dust could lead to function impairment Y Adequate fuse protection must be provided on all output safety contacts with capacitive and or inductive loads 3 ASSEMBLY AND FUNCTION 3 1 Power supply terminals The supply voltage must be applied to the terminals A1 and A2 The OUT OFF LED illuminates 3 2 Input terminals The NE1 4 D is designed to M UU E extend the number of the safety outputs of a master relay Thus the input terminals U1 K1 K21 U22 have to be wired up to the safety outputs of the master relay It is possible to connect to the NE1 4 D relay one or two safety outputs of the master relay depending on the application 3 3 START mode The START of the NE1 4 D relay is automatic as soon as the safety outputs of the master relay close the NE1 4 D relay closes its safety outputs 3 4 Function Starting from NE1 4 D master relay and external contactors de energized when the input contacts safety outputs of the master relay close the safety outputs 13 14 23 24 33 34 43 La NERA CN NC ah CA
8. tacts 10 TECHNICAL DATA See the following tables on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI ELECTRICAL DATA VALUES Power supply voltage Uv 24 VDC or AC supply Voltage range 0 85 1 1 Uv Frequency AC Type 50 60 Hz Power Consumption Approx Ca 4 VA 4W CONDUCTORS DATA VALUES Conductor connection 0 14 2 5 mm Rigid Wire 0 14 2 5 mm Flexible Wire Max Conductor Length input circuit cross section 1 5 mm Soom CONTACTS DATA VALUES Safety contact function 4N 0 Feedback output 1 N C Contact type Force Guided Relays Contact Material AgSnOz or comparable Switching voltage 250 VAC 24 VDC Switching current 6A Max switching capacity 2000 VA ohms load Mechanical lifetime 10 cycles Electrical lifetime 10 cycles Creeping distance and clearance DIN VDE 0160 Pollution degree 2 Overvoltage Category 3 250 V Basis insulation Overvoltage Category 3 250 V Contact security DIN VDE 0660 Part 200 6 A fast or 4 A slow Delay on de energization lt 30 ms on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI MECHANICAL DATA VALUES Housing Material Polyamid PA6 6 Dimensions WxHxP 22 5 x 114 5 x 99 Fastening Click fastening for DIN rail ENVIRONMENTAL DATA VALUES Operating
9. uit Only one or no LED illuminates External wiring or internal fault is present Check the external wiring and restart the safety relay If the fault is still present contact SAIET Elettronica 8 APPLICATION EXAMPLES Example 1 Dual channel contact extension Fig 3 Closing the N O input contacts the unit will be activated The safety output contacts 13 14 23 24 33 34 43 44 close and the feedback output contact Y1 Y2 Opens Opening one or both N O input contacts resets immediately the safety relay the safety output contacts 13 14 23 24 33 34 43 44 open and the feedback output contact Y 1 Y2 closes Example 2 Single channel contact extension Fig 3 Closing the N O input contact the unit will be activated the input terminals K1 U1 and K21 U22 are bridged The safety output contacts 13 14 23 24 33 34 43 44 close and the feedback output contact Y1 Y2 opens Opening the N O input contact resets immediately the safety relay the safety output contacts 13 14 23 24 33 34 43 44 open and the feedback output contact Y1 Y2 closes 9 WIRING HINTS FOR OUTPUT TERMINALS The positive power supply voltage for example L or 24 VDC but not GND should be routed via the output terminals This will help to recognize shorts to GND or Earth Using R C combination in parallel with inductive loads for example coils of the external contactors can reduce the wearing out of the output con
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