safety emergency stop relay sr3d

User information

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • D52070 Aachen • Tel +49 (0)241 9105010 • Fax +49 (0)241 91050138

[email protected] • www.zander-aachen.de 1

C02 C100 E61-139-00

• LED indicator for status channel 1 and 2 • 2 start performances: - monitored manual start - automatic start • Short-circuit monitoring and earth fault monitoring • Up to PL e, SILCL 3, category 4

• Opening the device, any manipulation of the device and the avoidance of the safety facilities are not permitted.

• All relevant safety regulations and standards must be attended to.

• The overall concept of the system must be validated by the user.

• Non-observance of the safety regulations may cause death, severe injuries or substantial damage to property.

Correct Use SR3D is an all-purpose emergency stop device which ensures the quick and safe deactivation of the moving parts of a machine in case of danger. Preferred applications include single and dual-channel emergency stop circuits and dual-channel safety gate or safety guard monitoring. SR3D can also be used for the safe deactivation of a electrical equipment for furnaces and ancillary equipment according to EN 50156-1, because of the diversified output relays in the device.

Features • 3 safety contacts

1 auxiliary contact • Connection of: • - Emergency stop buttons

- Safety switches - Non-contact safety switches - OSSD-Outputs

• Control: single or dual channel • Feedback loop for external contactors or extension

modules • Redundancy and cyclical monitoring • Diversified forcibly guided output relays

Function The safety emergency stop relay SR3D meets the require-ments of EN 60204-1 and is designed for the safe discon-nection of safety circuits. The SR3D is suitable up to cate-gory 4 and Performance Level e (PL e) according to EN ISO 13849-1. Once the start button is pushed, the internal logic closes the 3 safety contacts. The forcibly guided safety contacts will be opened by actu-ating the safety switch and so the machine is switched off safely. It is ensured that the occurrence of a single fault does not result in a loss of the safety function. And every fault will be recognized at the latest by the cyclical self monitoring when the device is switched off and on again.

Electrical Connection

• For the 24V version, a transformer according to EN 61558-2-6 or a power supply unit with galvanic isola-tion must be used.

• To prevent contact welding, external fuses must be used (6A slow-blow or 8A fast-blow or 10A gG).

• Maximum cable runs: 1000m at 0.75mm2 • Maximum cable cross-section: 2.5mm2 • If the device doesn‘t work after start-up, it must be sent

back to the manufacturer. It is not allowed to open the device. In this case the warranty claim will be void.

Installation According to EN 60204-1 the unit is designed to be used in switch cabinets with a minimum environmental protection of IP54. The housing is designed to be mounted on a 35mm DIN-rail according to DIN EN 60715 TH35. For the AC 115V/230V type, keep a minimum space of 10mm between the devices.

Safety Precautions

• The installation and operation must be carried out by qualified personnel only.

• Pay attention to the country specific regulations. • The electrical installation must be performed after dis-

connecting the device and the machine from the mains supply.

• The wiring must be carried out according to the instruc-tions of this operating manual, or the safety function may be lost.

Fig. 1 Block diagram SR3D

Safety Emergency Stop Relay SR3D

German Lloyd Certificate 32915-06HH

Fig. 2 Mounting / Demounting

Fig. 3 Terminals

A1: Power supply A2 : Power supply S11: DC 24V control voltage S10: Control line S21: Start control line S13: Control line S14: Control line S12: Control line 13-14: Safety contact 1 23-24: Safety contact 2 33-34: Safety contact 3 41-42: Auxiliary contact

English translation

User information



C02 C100 E61-139-00

Fig. 1: Dual channel emergency stop with short circuit and earth fault detection. (category 4, up to PL e)

Advice: Follow the guidelines in „Electrical Connection“ during the start-up. Commissioning Procedure 1. Input circuit:

Depending on the risk evaluation choose one of the wiring diagrams in „Applications“ (Fig. 1 to 8). 2. Choose start mode: Connect the start button with S11 and S21 for monitored manual start or connect S21 with S12 directly for automatic start (Fig. 9and 10). Warning: If “Automatic start” is set, bear in mind that the safety con-tacts will switch immediately after the power supply is connected. If “Monitored manual start” is set, the start button must be opened after wiring. 3. Feedback loop: If external contactors or extension modules are used, connect them according to Fig. 11 or Fig. 12. 4. Power supply: Connect the power supply to A1 and A2 (Fig. 13 or Fig 5/6). Caution: Power must not yet be activated.

5. Power up: Activate the power supply. Caution: If automatic start is chosen, safety contacts will close imme-diately after power up. If monitored manual start is chosen, press the start button for power up. LED‘s K1 and K2 will light up. 6. Actuate the safety function: Actuate the safety switch. The safety contacts will open directly. 7. Restart: Close the safety switch. If automatic start is chosen, the safety contacts will close immediately. If monitored manual start is chosen, close the start button for restart. The safety contacts close.

Fig. 9: Monitored manual start. It is monitored that the start button has been opened before the safety switch is closed. (Condition: power supply may not be interrupted)

Fig. 10: Automatic start. Maximum allowable delay when closing the safety switches at S12 and S13: S12 before S13: 300ms S13 before S12: no limit

Warning: Safety contacts will be activated immediately at power-on.

Depending on the application or the result of the risk assessment according to EN ISO 13849-1, the device must be wired as shown in Fig. 1 to Fig. 14.

Applications

Fig. 3: Single channel emergency stop with earth fault detection. (category 1, up to PL c)

Fig. 2: Dual channel emergency stop with earth fault detection. (category 3, up to PL d)

Fig. 4: Dual channel safety guard monitoring with short circuit and earth fault detection. (category 4, up to PL e)

Emergency Stop Circuit

Start Behavior


Notice: In order to activate earth fault monitoring, S10 must be con-nected to PE (protective earth) on the AC115/230V devices. With AC/DC 24 V, connect PE only to the power supply unit according to EN60204-1.

Fig. 7: Two channel emergency stop with pnp-outputs/OSSD-outputs with ist own short circuit monito-ring. (category 4, up to PL e)

Fig. 11: Feedback loop for monitored manual start: The feedback loop monitors contactors or the expansion modules .

Feedback Loop Fig. 12: Feedback loop for automatic start: The feedback loop monitors contac-tors or the expansion modules .

Power supply and Safety contacts

Fig. 13: Power supply A1 and A2. (Power supply according to techn. Data )

Fig. 14: Connecting load to safety contacts. (Figure shows example. Voltage „+V“ according to techn. Data)

Fig. 6: Dual channel emergency stop without fault-detection of the safety switch and the wires. (category 3, up to PL d)

Fig. 5: Single channel emergency stop without fault-detection of the safety switch and the wires. (category 1, up to PL c)

Fig. 8: Single channel emergency stop with a safety output with its own short circuit monitoring. (category 3, bis PL e) Wired inside a control cabinet (minimum degree of protection IP54) (category 4, bis PL e)

User information



C02 C100 E61-139-00

Maintenance Regular inspection (once a month) of the following is neces-sary to ensure a safe long-term operation. • Check the switching function of the device • Check the secure fastening of the device and the connec-

tions • Check for soiling (e.g. the ventilation slots at the housing)

Techn. Data In compliance with EN 60204-1; EN ISO 13849-1; EN 50156-1 ; EN 62061 Operating voltage AC 230V, AC 115V, AC/DC 24V Rated supply frequency 50-60Hz Allowable tolerance + / - 10% Power consumption DC 24V AC 230V approx. 2W approx. 6.9VA Control voltage at S11 DC 24V Control current at S11...S14 max. 100mA Safety contacts 3 NO Auxiliary contacts 1 NC Switching voltage max. AC 250V Contact rating of safety contacts (13-14, 23-24, 33-34) *) AC: 250V, 2000VA, 8A for resistive load, 250V, 3A for AC-15 DC: 50V, 400W, 8A for resistive load; 24V, 3A for DC-13 Cumulative current Max. 15A (13-14, 23-24, 33-34) Contact rating of auxiliary contact (41-42) AC: 250V, 500VA, 2A for resistive load DC: 50V, 100W, 2A for resistive load Minimum voltage/current 24V, 20mA Min. External fuses for safety contacts 6A slow-blow or 8A quick-blow or 10A gG Wire width 0.14 - 2.5mm2 Length of control lines Max. 1000m at 0,75mm2 Contact material AgNi Service Life mech. approx. 1 x 107, elec. 1 x 105 switching cycles Rated impulse withstand voltage 2.5kV (control voltage / contacts) Dielectric strength 4kV (DIN VDE 0110-1) Rated insulation voltage 250V Protection IP20 Temperature range DC 24V: -15°C bis +55°C AC 115V/230V: -15°C bis +55°C (see load curve) Degree of pollution 2 (DIN VDE 0110-1) Overvoltage category 3 (DIN VDE 0110-1) Weight approx. 230g Mounting DIN rail according to EN 60715TH35

Advice: For other applications than described, please contact the manufacturer for further information.

Safety Characteristics According to EN ISO 13849-1

The device is certified according to EN ISO 13849-1 up to a Performance Level of PL e.

No start up after emergency stop: • Check the safety switch. Is it closed? • Check that the start button has been opened before the

safety switch is closed (monitored manual start). • Check the feedback loop. Is it closed? If the fault still exists, perform the steps listed under “Comissioning Procedure”. If the steps do not remedy the fault either, return the device to the manufactuer for examination. Opening the device is impermissible and will void the warranty.

Device does not start up: • Check the wiring according to App. 1 - 9. • Check the safety switch. Correct function, correct adjust-

ing? • Check the start button. Is it closed?

(monitored manual start) • Check the power supply. • Check the feedback loop. Is it closed?

What to do in Case of a Fault?

No servicing is required. Repairs of the device are only allowed to be made by the manufacturer.

*) If several SR3D-24V are mounted closely together the maximum cumulative current is 9A at an ambient temperature of 20°C or 3A at 30°C or 1A at 40°C. If the current exceeds these limits, keep a minimum space of 5mm between the devices.


Safety characteristics according to EN ISO 13849-1 for all variants of SR3D

Load (DC-13; 24V) per contact <= 0,1A <= 1A <= 2A

T10d [years] 20 20 20

Category 4 4 4

PL e e e

PFHd [1/h] 1,2E-08 1,2E-08 1,2E-08

nop [cycle / year] <= 500.000 <= 350.000 <= 100.000

User information



C02 C100 E61-139-00

Dimension Drawing

Variants Order No. 472270 SR3D, AC 230V (50-60Hz), fixed screw terminals Order No. 472271 SR3D, AC 115V (50-60Hz), fixed screw terminals Order No. 472272 SR3D, AC/DC 24V (AC: 50-60Hz), fixed screw terminals Order No. 473270 SR3D, AC 230V (50-60Hz), plug-in terminals Order No. 473271 SR3D, AC 115V (50-60Hz), plug-in terminals Order No. 473272 SR3D, AC/DC 24V (AC: 50-60Hz), plug-in terminals Order No. 472592 EKLS4, plug-in screw terminals kit Order No. 472593 EKLZ4, plug-in spring-cage terminals kit


Load curve Max. cumulative current depending on the

ambient temperature for AC 115V/230V variants.

(Min. space of 10mm between the devices )

114

99

22,5

safety emergency stop relay sr3d

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