Selection guide Preventa safety modules

Transcription

1 Selection guide Preventa safety s PLe/Category conforming SILCL conforming PLe/Category conforming SILCL conforming PLe/Category (instantaneous safety outputs) and PLd/ Category (time delay safety outputs) conforming to SILCL (instantaneous safety outputs) and SILCL (time delay safety outputs) conforming to PLe/Category conforming to EN SILCL conforming to UL, CSA, TÜV UL, CSA, BG UL, CSA, TÜV UL, CSA, TÜV Safety NO NO NO instantaneous + NO time delay Additional solid-state output for signalling to PLC relay output for signalling to PLC solid-state outputs for signalling to PLC LEDs LEDs LEDs LEDs a and V c a V a a a and V c a and V c V a a NO instantaneous + NO time delay NC a Unlimited Unlimited ms (automatic start) a and V c a V a V c/ V c/ a V c/ XPSAC /

2 PLe/Category conforming to SILCL conforming PLe/Category (instantaneous safety outputs) and PLd/Category (time delay safety outputs) conforming to SILCL (instantaneous safety outputs) and SILCL (time delay safety outputs) conforming to PLe/Category conforming to SILCL conforming PLe/Category conforming to SILCL conforming PLe/Category conforming to SILCL conforming PLe/Category conforming to SILCL conforming UL, CSA, TÜV UL, CSA, BG UL, CSA, TÜV UL, CSA, TÜV UL, CSA, TÜV UL, CSA, TÜV NO instantaneous + NO time delay solid-state outputs for signalling to PLC NO instantaneous + NO time delay NO NO NO instantaneous NC + solid-state outputs for signalling to PLC LEDs LEDs LEDs LEDs LEDs V c a and V c a and V c V a and V c a and V c Unlimited or. s (depending on wiring) NC + solid-state outputs for signalling to PLC a and V c a a and V c a and V c a and V c Unlimited Unlimited Unlimited or s, s (depending on wiring) V c/ V c/ / V c/ V c/ V a/ V V c/ V/ V XPSAR XPSAK / / / / /

3 Selection guide (continued) Preventa safety s PLe/Category conforming to SILCL conforming to EN/ PLc/Category conforming to SILCL conforming to EN/IEC PLe/Category conforming to SILCL conforming to EN, EN type III A, UL, CSA, TÜV UL, CSA, TÜV UL, CSA, BG Safety NO NO NO Additional solid-state outputs for signalling to PLC NC NC LEDs LEDs LEDs V c a and V c a a and V c a a V/ V c/ V c V a/ V / / / /

4 PLe/Category conforming to SILCL conforming to PLc/Category conforming to, SILCL conforming to PLe/Category conforming to SILCL conforming to and PLe/Category conforming SILCL conforming to connected to the appropriate ) PLe/Category conforming to conforming connected to the appropriate ) UL, CSA, TÜV UL, CSA, IFA UL, CSA, TÜV UL, CSA, BG UL, CSA, TÜV NO NO solid-state NO solid-state outputs for signalling to PLC solid-state PNP NO outputs for signalling to PLC PNP + NPN output for signalling to PLC NC NC LEDs LEDs LEDs + -digit display LEDs LEDs V c a and V c a and V c V a a V c/ XPSCM / / /

5 Selection guide (continued) Preventa safety s PL d/category conforming SILCL conforming to PL d/category conforming SILCL conforming to PL e/category conforming SILCL conforming to PL e/category conforming SILCL conforming to UL, CSA, TÜV UL, CSA, TÜV UL, CSA, TÜV UL, CSA, TÜV Safety NO time delayed NO pulse type NO Additional NC + solid-state outputs for signalling to PLC solid-state outputs for signalling to PLC LEDs LEDs LEDs a and V c V a a XPSDMB /

6 valves PL d/category conforming SILCL conforming to EN/ PL e/category conforming SILCL conforming to EN/ PL e/category conforming to SILCL conforming to EN/ PL e/category conforming SILCL conforming to EN/ PL e/category conforming SILCL conforming to EN/ UL, CSA, TÜV TÜV UL, CSA, TÜV UL, CSA, TÜV UL, CSA, TÜV NO + NC NO NO + NC NO + NC NO solid-state outputs for signalling to PLC solid-state outputs for signalling to PLC LEDs LEDs V c V a a a and V c V a a V a a /

7 Preventa safety s types XPSAC, XPSAXE For Emergency stop and switch monitoring Safety s XPSAC and are used for monitoring Emergency stop meet the safety requirements for the electrical monitoring of switches in protective machine operator and the machine by immediately stopping the dangerous movement on receipt of a stop instruction from the operator, or on detection of a fault in the safety circuit itself. To aid diagnostics, the s have LEDs which provide information on the monitoring circuit status. b The XPSAC has safety outputs and a solid-state output for signalling to the PLC. b The has safety outputs and a relay output for signalling to the PLC instantaneous clamp integrated in solid-state a and XPSAC 0. a XPSAC 0. XPSACpppp a V XPSAC 0. a XPSAC 0. XPSACppppP clamp solid-state a and XPSACP 0. a XPSACP 0. a V XPSACP 0. a XPSACP 0. XPSAXEP Spring relay a and relay a and XPSAXEC

8 Preventa safety s types XPSAV, XPSABV, XPSATE For Emergency stop and switch monitoring XPSAV XPSAVP XPSABVppppP XPSABVppppC XPSATE Safety s, and are used for monitoring Emergency stop circuits conforming monitoring They provide protective for both the machine operator and the machine by immediately stopping the dangerous movement on receipt of a stop instruction from the operator, or on detection of a fault in the safety circuit itself., for and for ), the s incorporate stop category time delay outputs ( for, for and for ) which allow for controlled deceleration of the motor components until a complete stop is achieved (for At the end of the preset delay, the supply is disconnected by opening the time delay output circuits. b For seconds using selector buttons. b For b For -position selector switch. Module also incorporates solid-state signalling outputs for signalling to the process PLC. Module incorporates solid-state signalling outputs for signalling to the process PLC. To aid diagnostics, the s have LEDs which provide information on the monitoring circuit status. clamp integrated in NO solid-state ( NO time delay) 0.0 clamp NO ( NO time delay) solid-state 0.0 clamp integrated in NO solid-state ( NO time delay) (Start delay 0, s) 0.0 NO solid-state s ( NO time delay) 0.0 clamp NO ( NO time delay) 0. Spring NO ( NO time delay) 0.0 clamp NO ( NO time delay) 0. Spring NO ( NO time delay) 0.0 clamp integrated in NO solid-state a and ( NO time delay) clamp NO ( NO time delay) solid-state a and clamp integrated in NO solid-state a V ( NO time delay) 0. clamp NO ( NO time delay) solid-state a V 0. clamp integrated in NO solid-state a ( NO time delay) 0. clamp NO ( NO time delay) solid-state a 0.

9 Preventa safety type XPSATR For Emergency stop and protective guard applications Safety s meet the requirements of Performance Level PL e/category conforming to standard. Safety s are electronic, redundant and self-monitoring devices with positively driven relays. They are used for monitoring Emergency stop circuits (single or two-channel) and protective guard applications. They provide protection for both the machine operator and the machine by immediately stopping the dangerous movement on receipt of a stop instruction from the operator, or on detection of a fault in the safety circuit itself. incorporate NO and NC not delayed contacts and delayed NO contacts. To aid diagnostics, the s have LEDs on the front face which provide information on the monitoring circuit status. clamp NO + NO time delay NC 0. a 0. XPSATRppppP a Cage clamp NO + NO time delay NC 0. a 0. XPSATRppppC a

10 Preventa safety s type XPSAF For Emergency stop and switch monitoring Safety s meet the requirements of Performance Level PL e/category They are used for: b b Electrical monitoring of switches activated by protection devices conforming Housed in a compact enclosure, the s have safety outputs. Preventa safety s ppppp optimising machine maintenance. To aid diagnostics, the s have LEDs on the front face which provide information on the monitoring circuit status. clamp in a and 0. clamp a and 0. XPSAF0 /

11 Preventa safety s type XPSAFL For Emergency stop, switch and safety light curtain monitoring Safety s meet the requirements of Performance Level They are used for: b b Electrical monitoring of switches activated by protection devices conforming to that have solid-state safety outputs (for example, light curtains type XUSL. This system conforms to Performance Level PL e/category in accordance with Housed in a compact enclosure, the s have safety outputs. Preventa safety s ppppp thus optimising machine maintenance. To aid diagnostics, the s have LEDs on the front face which provide information on the monitoring circuit status. clamp a and 0. clamp a and 0. XPSAFL0 /

12 Preventa safety s type XPSAR For Emergency stop, switch or safety light curtain monitoring Safety s XPSAR meet the requirements of Performance Level PL e/ following safety applications: b b Electrical monitoring of switches activated by protection devices conforming b solid-state safety outputs with test function (light curtains XUS L). In addition to safety outputs, s XPSAR incorporate relay signalling outputs and solid-state signalling outputs for signalling to the process PLC. Safety s XPSARppppppP optimising machine maintenance. To aid diagnostics, the s have LEDs on the front face which provide information on the monitoring circuit status. of clamp, integrated in / a and XPSAR 0. a V XPSAR 0. XPSARp clamp, a XPSAR 0. / a and XPSARP 0. a V XPSARP 0. a XPSARP 0. /

13 Preventa safety s type XPSAK For Emergency stop, switch, sensing mat/edges or safety light curtain monitoring Safety s XPSAK meet the requirements of Performance Level PL e/category They are used for: b b Electrical monitoring of switches activated by protection devices, with optional selection of synchronisation time between signals. b Monitoring -wire sensing mats or edges. b solid-state safety outputs with test function (light curtains XUSL). Housed in a compact enclosure, the s have safety outputs, a relay signalling output and solid-state signalling outputs for signalling to the process PLC. Preventa safety s XPSAKppppP thus optimising machine maintenance. To aid diagnostics, the s have LEDs on the front face which provide information on the monitoring circuit status. clamp integrated in / a and a XPSAK XPSAK a XPSAK 0. XPSAKp a XPSAK 0. clamp / a and XPSAKP 0. a XPSAKP 0. a XPSAKP 0. a XPSAKP 0. a XPSAKP 0. /

14 Preventa safety s type XPSVC For enabling switch monitoring The enabling grip switch system, comprising an enabling switch XYAU and a monitoring, enables authorised personnel to carry out adjustment, programming or maintenance operations within hazardous zones of machines providing certain conditions are met. To be accessible, such operations are often carried out at reduced speed, and must from the hazardous zone s usual protection measures. Caution: The enabling switch system alone must not cause dangerous movements of the machine to be activated; a second intentional control action on the part of the operator is required. In addition, each person remaining in the hazardous zone must be provided with an individual enabling switch to ensure their own safety. clamp integrated in NO c 0. XPSVC clamp NO c 0. /

15 selection, Preventa safety s types XPSBAE, XPSBCE, XPSBF For electrical monitoring of two-hand control stations Two-hand control stations are designed to provide protection against hand injury. The use of two-hand control is an individual protective measure, which can safely protect only one operator. Safety s, and for two-hand control stations comply with the requirements of European The control stations must be designed and installed such that they cannot be activated involuntarily or easily machinery involved must be met (additional personal protection methods may have to be considered). To initiate a dangerous movement, both operators (two-hand control pushbuttons) must be activated within an interval y the control sequence is cancelled. Resumption of the dangerous operation is possible only if both pushbuttons are returned to their initial position and reactivated within the required time interval. one operator is released, the hazardous zone cannot be reached before the dangerous movement has been completed or stopped. XPSBAEppppP XPSBAEppppC A B C Standard EN / selection of two-hand controls according to its behavior. The following table details the types of two-hand control conforming to EN For each type, it lists the operating characteristics and minimum requirements. Use of both hands (simultaneous action) Output signal inhibited Prevention of accidental operation Tamper-proof Output signal reinitialised Use of proven components Redundancy with partial error detection Redundancy + Self-monitoring Two-hand control station XYSBpp XPSBAE XPSBCE XPSBF XPSBCE XPSBF XPSBCEppppP stations III A clamp Spring Meets the requirements of standard EN NO NC a and V c 0.0 a 0.0 NO NC a and V c 0.0 a 0.0 XPSBCEppppC III C clamp NO NC relay a and V c 0.00 a 0. a 0. XPSBF Spring clamp NO NC relay a and V c 0.00 a 0. a 0. NO solid-state 0. NO solid-state 0. /

16 Preventa safety s and single-beam photo-electric sensors With a test input associated with a built-in muting function m Materials trolley Entry direction MAMB D, D, D, D: monitoring photo-electric sensors. MA, MB, MA, MB: muting photo-electric sensors. m = trolley length (including material) dm = distance between MA, MB and MA, MB. dm Muting indication D D D D MAMB Hazardous zone Materials trolley XPSCM safety s used in conjunction with XUS single-beam photo-electric sensors (periodically tested), establish a category light curtain conforming The built-in muting function allows the automatic passage of parts to be machined, or loaded pallets, without interrupting the transportation movement. When the system is switched on by the start command (in series with the main circuit by the two safety relays of the XPSCM. and the process PLC receives a stop command. The LED on the XPSCM front panel changes from green to red. The open state is maintained until the is restarted using the start button. The muting function allows the light curtain protection to be inhibited. This can be used to authorise the passage of a materials trolley through the light curtain without tripping the main circuit. The muting function cannot be activated by supplying the inhibition sensors unless the safety outputs have been switched on beforehand. To trigger the muting function, the inhibition devices must be activated within the second time interval. This synchronisation time for the two inhibition inputs can be During the muting process, a light indicating the muting status is controlled by the XPSCM. An fault at indicator light level (short-circuit, open circuit) will be immediately recognised and deactivate the muting function. The indicator light comes on when a muting signal is generated and indicates the inhibition of the protection function. b The muting sensors must either be: v Thru-beam type v Thru-beam type, sensing distance m: XUBBKSNLT (or XUBBKSNMT) + XUBBPANLR (or XUBBPANMR). v v v Limit switches. b dm y m to obtain continuous validation of the muting function. b Avoid the intrusion of persons during the muting phase. This phase is indicated by the indicator light connected to the muting indicator output of the XPSCM. b A materials trolley must provide the muting signal before entering the protection Integrated in Removable from V c XPSCM 0. V c XPSCMP 0. XPSCMp /

17 Safety monitoring Preventa XPSLCM for the muting function of type and type safety light curtains m Materials trolley Entry direction A B dm Muting indication ESPE (Light curtain) C D Hazardous zone Materials trolley ESPE: electro-sensitive protection equipment (light curtain). A, B, D, C: muting sensors. m: trolley length and dm = distance between A, B and D, C. XPSLCM safety s are used with type light curtains conforming to EN/ This function enables the automatic passage of parts for machining or loaded pallets, without interrupting the transportation movement within the zone protected by the electro-sensitive protection equipment (ESPE) system. In addition to the electro-sensitive protection and XPSLCM safety s, the system comprises initial state in the event of a sequence error. When the system is switched on by the start command and the light curtain protection not interrupted, the main circuit is closed by the safety outputs of the XPSLCM s (solid-state safety outputs). In addition to safety outputs, the s incorporate signalling outputs for sending system status information to the PLC. Either or LEDs and a -digit display, mounted on the front face of the, provide information on the safety circuit status. equipment causes instantaneous opening of the safety outputs; the process PLC receives a stop command and the LED display mounted on the front face indicates the change of state of the safety circuits. The open state is maintained until the is restarted using the Start button. The muting function cannot be activated by supplying the inhibition sensors unless the safety outputs have been switched on beforehand. To trigger the muting function, the inhibition devices must be activated within the second time interval. During the activated muting phase, materials can be transported through the the hazardous zone, a person cannot activate the inhibition sensors in the same way and the system stops. Whilst the muting function is activated, a muting status indicator light is controlled by the XPSLCM. A fault at indicator light level (short-circuit, open circuit) is immediately recognised and deactivates the muting function. The indicator light only illuminates when a muting signal is generated and indicates the inhibition of the protection function. b The muting sensors must either be: v XUMBPANL or XUMBPBNL. v v v Limit switches b dm y m to obtain continuous validation of the muting function. b Avoid the intrusion of persons during the muting phase. This phase is indicated by the indicator light connected to the muting indicator output of the XPSLCM. b A materials trolley must provide the muting signal before entering the protection Removable PNP PNP + NPN V c from. XPSLCM

18 Preventa safety s types XPSECME, XPSECPE For extending the number of safety contacts Safety s and, for extending the number of safety contacts, are available as additions to Preventa XPSbase s (Emergency stop, limit switch, two-hand control, etc.). They are used to extend the number of safety output contacts of the base s. clamp a and 0. XPSECMEP Spring a and 0. clamp a and, XPSECMEC Spring a and. XPSECPEP clamp Spring a. a. XPSECPEC

19 Preventa safety s types XPSTSA, XPSTSW For safety time delays Safety s and are used in applications requiring safety time delays: b s b s in applications with a safety switchover contact (shunting contact in association with XPSVN s for zero speed detection, solenoid valve monitoring, etc.). The time delay of safety circuits can be set to preset values, using selectors located on the front face of the s. To aid diagnostics, the s have LEDs which provide information on the monitoring circuit status and solid-state outputs for signalling to the process PLC. clamp delayed NC / a and 0. XPSTSAppppP a V 0. a 0. clamp pulse type NC / a and 0. a V 0. XPSTSWppppP a 0.

20 Preventa safety s types XPSDMB, XPSDME For coded magnetic switch monitoring clamp integrated in Safety s XPSDMB and coded magnetic safety switches. They incorporate two safety outputs and two solid-state outputs for signalling to the process PLC. Conforming to Performance XPSDMB can monitor two independent sensors and s can monitor up to six independent sensors. To monitor a higher number of magnetic switches using these safety s, the magnetic switches can be connected in series parallel, while meeting the requirements of Performance Level PL d/category conforming to standard Safety s XPSDMpppppP optimising machine maintenance. To aid diagnostics, the s have LEDs on the front face which provide information on the monitoring circuit status. state NO XPSDMB 0. XPSDMB clamp integrated in NO 0. clamp NO XPSDMBP 0. XPSDME clamp NO 0. clamp integrated in NO <. s 0.

21 Preventa safety s type XPSVNE For zero speed detection Preventa safety s for zero speed detection are used to detect the stop condition of electric motors. Their most common applications include: providing As electric motors run down, a remanent voltage is produced in the windings of the motor due to residual magnetism. This voltage is proportional to the speed of the motor and, therefore, decreases as the motor comes to a standstill. This remanent voltage is measured in a redundant manner so as to detect the stop condition of the motor. The cabling between the motor windings and the inputs of the as a stopped motor. A transformer should not be used to connect the motor to Z, Z and Z since there is no monitoring of the connection with the motor winding via the resistance monitoring. Modules are suitable for detecting the stop condition of all types of AC or DC motor driven machines which, when the motor runs down, produce a remanent voltage in the windings due to residual magnetism. These machines can be controlled s are designed for a frequency frequency remanent voltage, special s pppphs should be used. Modules have potentiometers mounted on the front face of the which allow independent adjustment of the switching threshold for each input circuit. This allows adjustment for different types of motors and application requirements. To aid diagnostics, s have LEDs and solid-state outputs to provide information on the status of the zero speed detection circuit. / clamp y.. a V y. XPSVNEppppp. a y..

22 Preventa safety type XPSEDA For lift control zone Cabin Cabin doors Landing indicator (stop reference point) Landing doors Landing correct their level (isolevelling) in relation to the landing in order to compensate for The use of the safety The incorporates two safety outputs and two solid-state outputs for signalling functions. Four LEDs on the front face of the provide visual indication of the status of the safety circuit. The position of the cabin in relation to the landing is detected by two limit switches in the lift shaft. It is also possible to use non-contact sensors (magnetic sensors with reed contact). When the cabin reaches the preset position and when it is within the permissible tolerances in relation to the landing, the two safety circuits in safety close and allow isolevelling of the cabin with the doors open. Any change in one of the wiring, short-circuit, etc.) causes immediate opening of the safety outputs in the and subsequent stopping of the cabin. clamp integrated in a and 0. XPSEDA

23 Operating principle Preventa safety type XPSPVT For dynamic monitoring of hydraulic valves on linear presses Safety system valves which control the movements of potentially dangerous machines. The operating principle of this is explained in the circuit diagram of a hydraulic safety system for linear presses (see below). This hydraulic safety system features a position piston which controls the up and to complete the redundant system. This circuit must be activated to enable the or to oil contamination), and the valve piston shifts from its normal position towards the open position, the will detect it and prevent resumption of the Proximity sensors integrated in the valve to detect the piston positions and connected to the must be damped when the valve coils are in the de-energised state (zero position). The sensor circuits of the are designed to allow connection of NPN and PNP proximity sensors or sensing components. Either -wire or -wire types can be used. Hydraulic safety system circuit operating on a linear press. S A B Closing + opening () Y P Closing S A B S Opening Pressure release valve Y () P T Y Pump Pressure release valve () position hydraulic valve. () position hydraulic valve. V c.0 XPSPVT

24 Preventa safety s type XPSPVK For dynamic monitoring of double-bodied solenoid valves Safety is specially designed for dynamic monitoring of the safety presses equipped with friction clutches. dynamically. This function is provided by a double-bodied solenoid valve (safety valve for presses) which performs the functions of two valves mounted in one body. The position of the two valve pistons can be monitored by proximity sensors, mechanical limit switches or pressure switches. Module at points in the cycle. b b (energised) position. b To set up an automatic disconnect of the a NC auxiliary contact mounted on the main control contactor or on another contactor/ RESET button. If a fault is detected during the cycle, the and will also inhibit the start of another cycle. V c. V a. XPSPVK a.

25 Operating principle Preventa safety s type XPSOT For safety stop with automatic overtravel monitoring and control Safety is used on eccentric presses to monitor overtravel and ensure that the press slide stops in a non-dangerous position, i.e. top dead centre (TDC), during normal (non-emergency) operation. control system. The two essential functions of this safety are to: b to TDC. The next cycle will be inhibited to allow maintenance to be performed b When a stop instruction is issued after this safety point, the press completes the cycle and comes to a complete stop at TDC (cam ). usually activated from a two-hand control station associated with a safety (type ). Overtravel monitoring is performed by safety.

26 Operating principle (continued), Preventa safety s type XPSOT For safety stop with automatic overtravel monitoring and control approx. Limit switch Limit switch approx. BDC Top Dead Centre approx. TDC Stop and overtravel monitoring Restart + Stop mm Max. Bottom dead centre Die Permissible overtravel zone. S Permissible overtravel. A Press stop trigger point. B Point at which permissible overtravel is exceeded (a stop instruction issued after point B will C. Top dead centre, actual stopping zone of the press. BDC Bottom dead centre. Cam is associated with the, limit switch (LS), cam with the limit switch (the limit switches must be located on different cams for safety reasons). The limit switch is deactivated at TDC, at which point the limit switch is activated. Point A of the press stops and comes to a standstill:, the overtravel is abnormally long, and the next cycle is inhibited. limit switch reversed in relation to the state of the limit switch). dimension. Stop instructions issued after C is reached are not executed until point A is reached. LEDs V a. a. XPSOT