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| Safety Relays Timing Control Units CU1 Specifications Standards EN 954-1, ISO 13849-1, IEC/EN 60204-1, IEC 60947-5-1, ANSI B11.19, AS4024.1 Cat. 1 per EN 954-1 (ISO13849-1) C-Tick, CE marked for all applicable directives, cULus & TUV 24V AC/DC, 110/230V AC <4VA 1 N.C. 500 Automatic/manual 2 N.O. Safety 1 N.C. Auxiliary B300, AC-15 4A/250V AC, 4A/125VAC P300, DC-13; 3A/24V DC 2x4A 0.1s to 40min. 500mA time lag 5A quick acting 10mA/10V Red = Power on Red/Green = Timing/Output on 2500V -10C to +55C (+14F to +131F) 90% RH IP40 DIN 0470 IP20 DIN 0470 1 x 2.5mm2 (14AWG) stranded 1 x 4mm2 (12AWG) solid C in accordance with VDE 0110 3 1Nm (8 lbin) Red Polycarbonate 35mm DIN rail 360g (0.79lbs) 100,000 operations 500,000 operations 1,000,000 operations 2,000,000 operations 2,000,000 operations 0.75mm(0.03in) peak, 10-55Hz 30g, 11ms half-sine Category Approvals Power Supply Power Consumption Inputs Maximum Input Resistance Reset Description The CU1 is an on-delay timing unit designed to energize and thus unlock guard locking devices after a preset time delay expires. It can be used with power to unlock devices, like the Allen-Bradley Guardmaster Atlas, Spartan, 440G-MT, or TLS-GD2, on machines which have a run down cycle or do not stop immediately. It may also be incorporated into other parts of the safety related controls system, should a predictable, on-delay be required. A removable cover allows access to the AC power switch, the replaceable fuse, and the DIP switches & potentiometer which control the timing. Power to the CU1 can be either 24V AC/DC (+/ - terminals) or 110/230V AC (A1/A2 terminals). If 110V AC or 230V AC power is used, an internal switch must be set to the appropriate position. The X1/X2 terminals are designed to monitor the performance of the contactors which isolate the power to the moving parts of the machinery. The timing can not begin until the X1/X2 loop is closed. The X1/X2 loop must remain closed during the whole timing cycle. Opening the X1/X2 loop during the timing cycle causes the time to be reset to zero. If monitoring is not needed, the X1/X2 loop can be linked. A typical operation starts with the safety outputs (13/14 and 23/24) open and the X1/X2 loop closed. 1. Apply power to A1/A2 or +/-. a. The Power LED turns ON and the Output LED turns red. b. After the time delay expires, the Output LED turns green and the safety outputs (13/14 and 23/24) close. 2. Remove power to A1/A2 or +/-. a. Immediately, the safety contacts (13/14 and 23/24) open, the Power LED turns off and the Output LED turns Off. 3. Go to step 1. The status of the CU1 can be signaled to the Remote Indicator Unit via terminals R1/R2/R3, or to a PLC or other indicator by using the N.C. auxiliary contacts (31/32). Outputs Output Utilization per IEC 60947-5-1 (Inductive) Thermal Current (non switching) Timed Off-Delay Fuses Input (external) Output (external) Max. Switched Current/Voltage Indication LED Impulse Withstand Voltage Operating Temperature Humidity Enclosure Protection Terminal Protection Conductor Size Installation Group Pollution Degree Torque Settings--terminal screws Case Material Mounting Weight Electrical Life 220V AC/4A/880VA/cos=3.5 220V AC/1.7A/375VA/cos=0.6 30V DC/2A/60W 10V DC/0.01/0.1W Mechanical Life Vibration Shock Features * * * * Category 1 per EN 954-1 Stop category 1 Timed on-delay output 0.1s to 40 min 2 N.O. safety outputs See Output Ratings on page 1-29 for details. Consult factory for ratings not shown. 4-62 Safety Relays Timing Control Units CU1 Product Selection Inputs 1 N.O. Safety Outputs 2 N.O. Auxiliary Outputs 1 N.C. Power Supply 24V AC/DC and 110/230V AC Catalogue Number 440R-T07114 Accessories Description 500mA Fuse CU1 Remote Indication Unit Page Number 14-6 -- Catalogue Number 440R-A31562 440R-A07138 Dimensions--mm (inches) Control Unit 120 (4.72) 73 (2.87) Block Diagram Remote Indication Unit 36 (1.42) 38 (1.50) A1 A2 45.5 (1.79) + X1 K2 X2 K3 K2 R VR1 13 23 31 F1 110/230 SW1 K2 K1 ~ 24V DC K3 K1 K2 K1 K2 G 69 (2.72) 57 (2.24) Q1 K3 K2 35mm DIN Rail Mounting Max (3 Wire) Cable Size 6mm O 50 (1.97) R2 R1 R3 14 24 32 Typical Wiring Diagrams 24V DC Start Stop Guard Closed & Locked TLS1-GD2 A1 42 41 12 22 54 53 34 33 A1 + 13 23 31 X1 K2 K1 (aux) K2 (aux) L1 L2 L3 A2 CU1 A2 R1 R2 R3 14 24 32 X2 K2 11 K1 21 M Ground K2 Remote Indicator Aux Guard Locking Safety Gate, Delayed Gate Release, Automatic Reset, Monitored Output Application Details General time settings via DIP switches A B 1 2 1 2 <1 sec. to 10 secs. C 1 sec. to 39 secs. D 1 2 1 2 6 secs. to 5 mins. 10 secs. 48 sec. to 41 secs. Adjustable Time Delay Fine adjustment time setting via potentiometer + Fully CCW Maximum + Fully CW Minimum DIP switches general time setting and the potentiometer fine tunes the time settings. Easy access 500mAT replaceable fuse. 4-63 |
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