E-STOP relays, safety gate monitors

Transcription

1 Safety relay for monitoring E-STOP pushbuttons and safety gates. Approvals Unit features Positive-guided relay outputs: 2 safety contacts (N/O), instantaneous 2 safety contacts (N/O), delay-on de-energisation Connection options for: E-STOP pushbutton Safety gate limit switch Reset button LED indicator for: Switch status channel 1/2 Supply voltage Reset circuit Delay-on de-energisation, fixed or selectable Delay time can be cancelled via reset button See order reference for unit types The max. category the safety contacts can achieve in accordance with EN is stated in the technical details. Safety features The relay conforms to the following safety criteria: The circuit is redundant with built-in self-monitoring. The safety function remains effective in the case of a component failure. The correct opening and closing of the safety function relays is tested automatically in each on-off cycle. The unit has an electronic fuse. Unit description The safety relay meets the requirements of EN and IEC and may be used in applications with E-STOP pushbuttons Safety gates Block diagram A1 A2 1 2 S21 S22 S31 S = = Input Input Input K3 K1 Power K4 Reset/ Start Reset/ Start Reset t K2 3 S33 S34 Y39 Y

2 Function description Single-channel operation: no redundancy in the input circuit, earth faults in the reset circuit are detected. Dual-channel operation with detection of shorts across contacts: redundant input circuit, detects Timing diagram earth faults in the reset and input circuit, short circuits in the input circuit and, with a monitored reset, in the reset circuit too, shorts between contacts in the input circuit. Automatic start: Unit is active once the input circuit has been closed. Monitored reset: Unit is active once the input circuit is closed and once the reset circuit is closed after the waiting period has elapsed (see technical details). Increase in the number of available contacts by connecting contact expander modules or external contactors/relays. 1 2 POWER Reset/Start Reset t v Input Output safe Output safe del t1 t2 t3 t1 t2 t3 t4 t1 t2 t3 t4 t1 t2 t3 Key Power: Supply voltage Reset/start: Reset circuit 3-, S33-S34 Reset t v : Y39-Y40 Input: Input circuits 1-2, S21- S22, S31-S32 Wiring Please note: Information given in the Technical details must be followed. Outputs 13-14, are instantaneous safety contacts, outputs 37-38, are delay-on de-energisation safety contacts. To prevent contact welding, a fuse should be connected before the output contacts (see technical details). Calculation of the max. cable runs l max in the input circuit: Output safe: Safety contacts, instantaneous 13-14, Output safe del: Safety contacts, delayed 37-38, : Automatic reset : Monitored reset Sufficient fuse protection must be provided on all output contacts with capacitive and inductive loads. t 1 : Switch-on delay t 2 : Delay-on de-energisation t 3 : Delay time t 4 : Waiting period I max = R lmax R l / km R lmax = max. overall cable resistance (see technical details) R l /km = cable resistance/km Use copper wire that can withstand 60/75 C. -2

3 Preparing for operation Supply voltage Supply voltage AC DC A1 L+ A2 L- Input circuit Input circuit Single-channel Dual-channel E-STOP without detection of shorts across contacts S21 S S32 S31 E-STOP with detection of shorts across contacts 1 2 S22 S32 S31 S21 Safety gate without detection of shorts across contacts 2 S21 1 S22 S32 S31 Safety gate with detection of shorts across contacts 1 S22 S21 S2 2 S32 S31

4 Reset circuit Reset circuit Automatic reset E-STOP wiring (single-channel) Safety gate (single-channel) 3 E-STOP wiring (dual-channel) Safety gate (dual-channel) 3 S2 Monitored reset S33 S34 3 S3 S33 S34 3 S3 Reset Reset Link N/C contact for resetting the delay time Link or N/C contact Y39 Y39 Y40 Y40 Feedback loop Feedback loop Automatic reset Monitored reset Contacts from external contactors 3 13 (23) 14 (24) K5 K6 K5 K6 L1 N S33 S34 13 (23) 14 (24) K5 S3 K6 K5 K6 L1 N Key /S2 S3 E-STOP pushbutton/ safety gate switch Reset button Switch operated Gate open Gate closed -4

5 Terminal configuration Installation Dimensions The safety relay should be installed in a control cabinet with a protection type of at least IP54. Use the notch on the rear of the unit to attach it to a DIN rail. Ensure the unit is mounted securely on a vertical DIN rail (35 mm) by using a fixing element (e.g. retaining bracket or an end angle). 121 (4.76") 75 (2.95") 87 (3.42") 45 (1.77")

6 Notice Service life graph This data sheet is only intended for use during configuration. For installation and operation, please refer to the operating instructions supplied with the unit. D Nennbetriebstrom (A) GB Nominal operating current (A) F Courant coupé (A) E Corriente nominal de servicio (A) I Corrente di esercizio nominale (A) NLNominale bedrijfsstroom (A) 10 1 AC15: 230 V DC13: 24 V DC1: 24 V AC1: 230 V D Schaltspielzahl x 10 3 E Número de ciclos x 10 3 GB Cycles x 10 3 I Numero dei cicli di commutazione x 10 3 F Nombre de manœvres x 10 3 NLAantal schakelingen x 10 3 Technical details Electrical data Supply voltage U B DC 24 V Voltage tolerance -15% / +10% Power consumption 4.5 W Residual ripple DC 160 % Voltage and current at input circuit: 24.0 VDC 35.0 ma reset circuit: 24.0 VDC 40.0 ma feedback loop: 24.0 VDC 5.0 ma Output contacts in accordance with EN 954-1, Category 4 Output contacts in accordance with EN Category 1 Order no , Category 3 Utilisation category in accordance with EN AC1: 240 V DC1: 24 V Utilisation category in accordance with EN AC15: 230 V DC13 (6 cycles/min): 24 V Contact material External contact fuse protection (EN ) Blow-out fuse, quick Blow-out fuse, slow Circuit breaker Max. overall cable resistance R lmax input circuits, reset circuits Single-channel Dual-channel with detection of shorts across contacts Safety contacts (N/O): 2 ST Safety contacts (N/O), delayed: 2 ST When delay time >30 s When delay time <30 s I min : 0.01 A, I max : 8.0 A P max : 2,000 VA I min : 0.01 A, I max : 8.0 A P max : 200 W I max : 5.0 A I max : 7.0 A AgSnO µm Au 10 A 6 A 6 A, 24 VAC/DC, characteristic B/C 100 Ohm 10 Ohm -6

7 Times Switch-on delay with automatic reset typ. with automatic reset max. with automatic reset after power on typ. with automatic reset after power on max. with monitored reset typ. with monitored reset max. Delay-on de-energisation with E-STOP typ. with E-STOP max. with power failure typ. with power failure max. Recovery time at max. switching frequency 1/s after E-STOP after power failure Delay time t v selectable fixed The standards current on 11/03 apply. 350 ms 650 ms 385 ms 700 ms 45 ms 70 ms 15 ms 30 ms 85 ms 200 ms 50 ms + t v 250 ms Repetition accuracy Time accuracy Waiting period with a monitored reset Min. start pulse duration with a monitored reset Simultaneity, channel 1 and 2 Supply interruption before de-energisation Environmental data EMC EN , EN Vibration in accordance with EN Frequency Amplitude 0.10 s, 0.20 s, 0.30 s, 0.40 s, 0.50 s, 0.60 s, 0.70 s, 0.80 s, 1.00 s, 1.50 s, 2.00 s, 3.00 s Order no.: s, 0.50 s, 1.00 s, 2.00 s, 4.00 s, 6.00 s, 8.00 s, s, s, s, s, s Order no.: s, 5.00 s, s, s, s, s, s, s, s, s, s, s Order no.: s Order no.: , 3.0 s Order no.: , 10 s Order no.: % -15% / +15% +50 ms 300 ms 30 ms 20 ms Hz 0.35 mm Climatic suitability EN Airgap creepage VDE Ambient temperature C Storage temperature C Protection type Mounting (e.g. cabinet) Housing Terminals Mechanical data Housing material Housing Front Max. cross section of external conductors with screw terminals 1 core flexible 2 core, same cross section, flexible: with crimp connectors, without insulating sleeve without crimp connectors or with TWIN crimp connectors Torque setting with screw terminals Dimensions (H x W x D) IP54 IP40 IP20 PPO UL 94 V0 ABS UL 94 V mm mm mm Nm 87 mm x 45 mm x 121 mm Weight 350 g Order no.: , , g Order no.: , ,

8 Max. continuous current Number of contacts I max (A) at U B DC A A A A Order reference Type Features Terminals Order no. 24 VDC 0.5 s fixed Screw terminals VDC 3.0 s fixed Screw terminals VDC 10.0 s fixed Screw terminals VDC 3 s selectable Screw terminals VDC 30 s selectable Screw terminals VDC 300 s selectable Screw terminals