SAFETY RELAY ND1/2-D User`s Manual
Contents
1. IP 20 Housing type DIN VDE 0470 Part 1 IP 40 Shock resistance DIN VDE 0160 5g 33 Hz on 87Y 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI on 877 268 3700 www carlogavazzisales com sales gross LM ER a SAIET reserves the right to make improvements or changes without prior notice Mod 3224 XII 02 on 877 268 3700 www carlogavazzisales com sales gross2. SAFETY RELAY ND1 2 D User s Manual CARLO GAVAZZI 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 MCN sales gross Index INTROBUGTION E 3 2 SAFETY INDICATIONS ca ella 3 3 ASSEMBLY AND FUNCTION i 4 3 1 Power supply terminals nennen 4 Die IOUT TOTTI GIS lb DEDE 4 o RT 4 4 MOUNTING AND OPENING iii 5 5 ELECTRONIC CONNECTION ceinen iaire 6 Do OWEN SUD ibid 6 5 2 Close the feedback control loop and the input circuit 6 SS PNF AIN ONU sa edes satt ee enc T 6 6 MAINTENANCE AND REPAIR 7 Ts PAUSE DIAGNOSIS ci etsi tese ie 8 8 WIRING HINTS FOR OUTPUT TERMINALS 8 9 TECHNICAL DATA ciale iran 8 on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI 1 INTRODUCTION This operating instruction is referred to the two hand devices monitoring relay ND1 2 D 24 Vac dc and to the models supplied with an AC power supply and named ND1 2 D xxx where XXX is the AC supply voltage The ND1 2 D name used in this manual is referred to all the models DC and AC supply if not differently specified These instructions are addressed to the following persons Qualified professionals who plan and develop safety equipm
3. Wire 0 14 2 5 mm Flexible Wire 4x150 m 55 Conductor connection Max Conductor Length input circuit cross section 1 5 mm Max capacity of input cables 150 nF km CONTACTS DATA VALUES Safety Contacts 2 N O 1 N C Relay output Aux Contact 1 N O PNP output Safety amp N C Aux Contact type Forced Guided Relays Contact Material AgSnO gt or comparable Switching voltage 250 VAC 24 VDC Switching current 6A Max switching capacity 1500 VA ohms load Mechanical lifetime 10 cycles Electrical lifetime 10 cycles Creeping distance and Pollution degree 2 clearance Basis insulation Overvoltage DIN VDE 0160 Category 3 250 V DIN VDE 0110 Protective Separation Ov Cat 2 ri DIN VDE 0850 Part 200 6 A fast or 4 A slow Voltage at S11 terminal 24 VDC Delay on de energization lt 30 ms Max delay between inputs 0 5 sec on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI AUXILIARY PNP OUTPUT VALUES Supply voltage of the relay gt 18 VDC Resistive load gt 2400 Ohm 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 Temperature 25 55 C Max Humidity Alt Cycle 95 0 50 C Terminal type DIN VDE 0470 Part 1
4. com sales gross CARLO GAVAZZI v Starting the machine while standing in the dangerous area must be impossible v Any guarantee is void following opening of the housing or unauthorized modifications Y Avoid mechanical vibrations greater than 5 g 33 Hz when transporting and in operations v The unit should be panel mounted in an enclosure rated at IP 54 or better otherwise dampness or dust could lead to function impairment v 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 on POWER off Switch 1 2 m n t 0 5 s Switch 2 1 13 14 23 24 Fig 1 Timings t2 gt 0 551 A2 The POWER LED illuminates 3 2 Input terminals The input terminals S11 S12 S21 and S22 have to be wired up to the two hand control device as shown in the connection diagrams of this user s manual 3 3 Function The unit is enabled to start when the two switches S1 amp S2 are operated with a delay lower than 0 5 seconds see Fig 1 At this time the safety outputs 13 14 23 24 and the PNP auxiliary output 34 close immediately while the auxiliary contact 31 32 opens immediately The LEDs Channel 1 and Channel 2 illuminate If one or both buttons are released the safety outputs 13 14 23 24 and the PNP auxiliary output 34 o
5. ent 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 The operating instructions contains several symbols which are used to highlight important information WARNING Y This word 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 word is placed in front of text which contains important information ACTIVITY v This word is placed in front of activities RESULT v After this word follows a description on how the situation has changed after an activity is performed 2 SAFETY INDICATIONS Application The safety relay ND1 2 D can be used in applications for Two Hand control according to EN 574 up to level Illc IMPORTANT v 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 v 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 Electrical works may be executed only by electrical specialist v Follow local regulations as regards preventative measures on 877 268 3700 www carlogavazzisales
6. pen immediately while the auxiliary contact 31 32 closes IL Ll t3 id t8 lt 05s 4 lt 05s TL LIL J LOL on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI Terminal Function Connection A1 24VDC or AC supply A2 GND or AC supply S11 S12 S22 First input button S1 S21 S12 S22 Second input button S2 Y1 Y2 Feedback control loop 34 PNP aux output collector of a PNP transistor with emitter connected internally to Vcc 13 14 First safety output N O 23 24 Second safety output N O 31 32 Relay auxiliary output N C AE UNA RC Fig 2 Functional circuit diagram of ND1 2 D relay immediately The LEDs Channel 4 MOUNTING AND 1 and or Channel 2 turn off OPENING A new cycle can be started only The unit should be panel mounted after releasing both S1 amp S2 in an enclosure rated at IP 54 or switches and if the feedback better dust and humidity control loop contacts are closed protected because dampness or external contactors de dust could lead to function energized impairment on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI the technical data of this user s manual 5 ELECTRONIC CONNECTION 5 1 Power supply Connect the power supply to A1 and A2 terminals 5 2 Close the feedback control loop and the input circuit Connect the N C Feedback contacts of the external contac
7. the DIN Rail v Mount the new device on the DIN Rail Y Insert and fix the cables on the new device Ye 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 Faulty contact condition In the event of welded contacts further activation is not possible following the opening of the input circuit 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 on 877 268 3700 www carlogavazzisales com 8 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 contacts 9 TECHNICAL DATA See the following tables sales gross CARLO GAVAZZI ELECTRICAL DATA VALUES Power supply voltage Uv 24 VDC Elec fuse protect or AC supply Voltage range 0 85 1 1 Uv Frequency AC Type 50 60 Hz Power Consumption Approx 2VA 2W CONDUCTORS DATA VALUES 0 14 2 5 mm Rigid
8. tors to the Y1 Y2 terminals ACTIVITY Connect the two hand control Y There is a notch on the rear of device as shown in Fig 4 the unit for DIN Rail mounting Connection Diagram Carry out the wire appropriate to 5 3 PNP auxiliary output Fig 3 DIN Rail mounting Feedback Control Loop Fig 4 ND1 2 D Connection diagram on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI Connect G to A2 if power supply is 24 Vdc 12 if Power Supply is an ac supply Fig 5 Connection of the auxiliary PNP output connected to the 24 Vcc On 12 internal ground terminal if terminal 34 is available the the relay is powered with an AC collector of the PNP transistor supply Connect to the 34 terminal an WARNING external resistive load with A Paea y R gt 2400 Ohm see fig 3 ease note the maximum i ENE length of the cables Connect the ground of the 6 MAINTENANCE AND external circuit to REPAIR e A2 terminal if the safety relay is l powered with 24 Vdc supply The safety relay ND1 2 D is maintenance free Fig 6 Change of the ND1 2 D safety relay on 877 268 3700 www carlogavazzisales com sales gross CARLO GAVAZZI In event of failure it is possible to change the defective device with a new one following the steps described below v Switch off the relay and remove the wiring from the device Y Take off the defective device from
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