Safety Relays Stop Motion Monitors CU2 Specifications Description The CU2 control unit is a compact timing and stop motion detector interface module. By utilizing two independent inductive proximity inputs which monitor the movement of two metal parts of the machine (e.g., sprockets, cams or linkages), the control unit detects when hazardous motion has ceased. When the hazardous motion has stopped the unit will send a signal to unlock guard locking devices. It has been developed to integrate guardlocking interlock switches on machines which have variable or unpredictable run down cycles. Standards EN 954-1, ISO 13849-1, IEC/EN 60204-1, IEC 60947-5-1, ANSI B11.19, AS4024.1 Category Cat. 1 per EN 954-1 (ISO13849-1) Approvals C-Tick, CE marked for all applicable directives, cULus & TÜV Power Supply 24V AC/DC or 110/230V AC Power Consumption < 4VA Inputs 1 NPN and 1 PNP, normally open Maximum Input Resistance 500 Ω Reset Automatic/Manual Outputs 2 N.O. Safety; 1 N.C. Auxiliary ➊ Output Utilization per IEC 60947-5-1 (Inductive) B300 AC-15 5A/250V AC, 5A/125V AC N300 DC-13 3A/24V DC Timed Off-Delay 0.1s to 40min. Fuses Input (external) Output (external) 500mA time lag 5A quick acting Max. Switched Current/Voltage 10mA/10V Maximum Dropout Time 90ms Indication LEDs Red = Power on Red/Green = Timing/Output on A removable cover allows access to the DIP switches and potentiometer which control the timing. The on-delay may be adjusted between 0.1 seconds to 40 minutes, through a series of 4 broad time ranges. The final adjustment is made by a potentiometer. Impulse Withstand Voltage 2500V Operating Temperature -10°C to +55°C (+14°F to +131°F) The Y1/Y2 terminals provide a check of contactors at machine power up. This is only relevant to certain special applications. For normal use these terminals should be linked. After all motion has ceased, the N.O. safety on contacts close, which may be used to energize electrically operated solenoid locking guard switches. In addition the N.C. contacts open to indicate the unit’s status. LED indication in the unit displays power, timer on, and outputs. Features • • • • • • Category 1 per EN 954-1 Stop category 1 NPN and PNP Inputs Timed off-delay 0.1s to 40 min. 2 N.O. Safety Outputs 1 N.C. Auxiliary Output Humidity 90% RH Enclosure Protection IP40 (NEMA 1), DIN 0470 Terminal Protection IP20, DIN 0470 Conductor Size 1 x 2.5mm2 (14AWG) stranded 1 x 4mm2 (12AWG) solid Installation Group C in accordance with VDE 0110 Pollution Degree 3 Torque Settings—terminal screws 1N⋅m (8lb⋅in) Case Material Red Polycarbonate Mounting 35mm DIN rail Weight 360g (0.79lbs) Electrical Life 220V AC/4A/880VA/cosϕ=3.5 220V AC/1.7A/375VA/cosϕ=0.6 30V DC/2A/60W 10V DC/0.01/0.1W 100,000 operations 500,000 operations 1,000,000 operations 2,000,000 operations Mechanical Life 2,000,000 operations Vibration 0.75mm (0.30in) peak, 10-55Hz Shock 30g, 11ms half-sine ➊ See Output Ratings on page 1-29 for details. Consult factory for ratings not shown. 4-66 Safety Relays Stop Motion Monitors CU2 Product Selection Description Controller and Sensors Sensor Voltage Sensor Size 24V DC Supplied by Control Unit Sensing Distance 12mm 3mm 18mm 5mm 30mm 10mm Control Unit Voltage Catalogue Number 24V AC/DC 440R-S07279 110/230V AC 440R-S07280 24V AC/DC 440R-S07281 110/230V AC 440R-S07282 24V AC/DC 440R-S07283 110/230V AC 440R-S07284 Accessories Description Voltage 24V DC Control Unit only 110/230V AC Size Output Type 45mm 2 N.O. & 1 N.C. 12mm 24V DC Supplied by Control Unit Sensor only 18mm 30mm Replacement Fuse Catalogue Number 440R-S07139 440R-S07140 NPN 872C-D3NN12-E2 PNP 872C-D3NP12-E2 NPN 872C-D5NN18-E2 PNP 872C-D5NP18-E2 NPN 872C-D10NN30-E2 PNP 872C-D10NP30-E2 440R-A31562 page 14-6 Dimensions—mm (inches) Block Diagram 45.5 (1.79) 120 (4.72) A1 A2 Y1 F1 110/230 K1 73 (2.87) ~ K2 Brown Black Blue N P N K3 13 23 31 14 24 32 K1 K2 K2 G Y2 K2 R K1 K3 24VDC Logic K3 Timer Q1 K2 35mm DIN Rail Mounting Brown Black Blue P N P Typical Wiring Diagrams 24V DC K1 (aux) Start K2 (aux) L1 L2 L3 Stop Proximity Sensor Guard Closed & Locked TLS1-GD2 54 A1 42 A2 41 12 22 53 34 21 33 11 K1 K2 A1 N P N 13 23 31 Y1 K2 K2 CU2 A2 P N M P 14 24 32 Y2 Proximity Sensor Aux Ground Guardlocking Safety Gates, Motion Sensors, Delayed Gate Release, Automatic Reset, Monitored Output 4-67 Safety Relays Stop Motion Monitors CU2 Sensor Details Specifications Description Bulletin 872C WorldProx inductive proximity sensors are selfcontained, general purpose, solid-state devices designed to sense the presence of ferrous and nonferrous metal objects without touching them. The switch body consists of a plastic face and a nickel-plated brass barrel. It meets NEMA 1, 2, 3, 4, 6P, 12, 13 and IP67 (IEC529) enclosure standards. The electronic circuitry is fully potted for protection against shock, vibration, and contamination. The CU2 is designed to operate with one normally-open NPN and one normally-open PNP inductive proximity sensor. The sensors translucent end caps which glow when the LED indicator is on, and is visible from almost every angle. The sensors contained in this section are some of the more popular size inductive proximity sensors. See the Rockwell Automation/AllenBradley Sensors catalogue for an extensive range of proximity sensors. Dimensions—mm (inches) Standards IEC60947-5-2 Approvals CE marked for all applicable directives and cULus Operating Voltage 10-30 DC Sensing Distance 2mm, 5mm or 10mm Correction Factors Mild Steel Stainless Steel Brass Aluminium Copper 1.0 0.7 – 0.8 0.4 – 0.5 0.3 – 0.4 C – 0.3 Load Current 200mA Outputs NPN or PNP normally open Leakage Current £10mA Voltage Drop ≤1.64V Repeatability ≤2% Hysteresis ≤10% typical Indication LED Red = Output energized Operating Temperature -25°C to +70°C (-13°F to +158°F) Humidity 95% RH Enclosure Protection NEMA 1, 2, 3, 4, 6P, 12, 13, IP67 Electrical Protections False pulse on power, transient noise, reverse polarity short circuit, overload. Cable Size 3 x 1mm2 (18AWG) stranded Cable Length 2mm2 (14AWG) Case Material Plastic faced, nickel plated brass barrel Mounting M12, M18 or M30 Flush fitting (shielded sensing) Shock 30g, 11ms half sine Vibration 1mm peak, 10 – 55Hz ➊ See Output Ratings on page 1-29 for details. Consult factory for ratings not shown. A 360° Visible LED C B 2m (6.5ft) mm (inches) Thread Size Shielded M12 x 1 M18 x1 M30 x 1 4-68 A B (max) C (min) 50.8 (2.00) 46.7 (1.84) 12 (0.47) Yes 18 (0.71) 30 (1.18) Safety Relays Stop Motion Monitors CU2 Sensor Details Application Details Application Accessories General time settings via DIP switches Adjustable Time Delay PNP and NPN Inductive Sensors for use with CU2 Sensors detect when motion has ceased by monitoring two targets on moving metal parts. When motion has ceased the CU2 begins timing down. Once preset time limit has been passed the CU2 sends a signal allowing locked guard to be opened. NPN Inductive Sensor DIP switches general time setting and the potentiometer fine tunes the time settings. Easy access 500mAT replaceable fuse. A 1 2 <1 sec. to 10 secs. C 1 2 6 secs. to 5 mins. 10 secs. 1 D 2 48 secs. to 41mins. B C Rotary movement of machine B 2 1 sec. to 39 secs. Fine adjustment time setting via potentiometer PNP Inductive Sensor A 6mm max 1 D Fully CCW Maximum 6mm max Fully CW Minimum CU1 remote indication unit: A remote indication unit to indicate the status of the circuit can be connected to the CU 1s R1, R2 and R3 connections. Typical Wiring Diagrams NPN (Sinking) PNP (Sourcing) + 10-30V DC Brown + Load Black + 10-30V DC Brown Blue + - Black Load Blue 4-69