CU2
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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 guard locking interlock switches on machines which have variable or unpredictable run down cycles.
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.
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 normally open safety on contacts close, which may be used to energize electrically operated solenoid locking guard switches. In addition the normally closed 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 0.1 s…40 min
- Two N.O. safety outputs
- One N.C. auxiliary output
LED Indicators
| Red | Power on |
| Red/Green | Timing/Output On |
Specifications
| Safety Ratings | ||
| Standards | EN 954-1, ISO 13849-1, IEC/EN 60204-1, IEC 60947-5-1, ANSI B11.19, AS4024.1 | |
| Safety Classification | Cat. 1 per EN 954-1 (ISO 13849-1), SIL CL1 per EN IEC 62061, PL c per ISO 13849-1 | |
| Certifications | CE Marked for all applicable directives, cULus, c-Tick, and TÜV | |
| Power Supply | ||
| Input Power Entry | 24V AC/DC or 110/230V AC | |
| Power Consumption | <4 VA | |
| Inputs | ||
| Safety Inputs | 1 NPN and 1 PNP, Normally Open | |
| Input Resistance, Max. | 500 W | |
| Reset | Automatic/Manual | |
| Outputs | ||
| Safety Contacts | 2 N.O. | |
| Auxiliary Contacts | 1 N.C. | |
| Rated Impulse withstand Voltage | 2500V | |
| Switching Current @ Voltage, Min. | 10 mA @ 10V | |
| Fuses, Output | 5 A quick acting (external) | |
| Electrical Life (Operations) | 220V AC/4 A/880VA cosf = 0.35…0.1 M 220V AC/1.7 A375VA cosf = 0.6…0.5 M 30V DC/2 A/60 W = 1 M 10V DC/0.01 A/0.1 W = 2 M |
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| Mechanical Life | 2,000,000 operations | |
| Utilization Category | ||
| Inductive: B300: AC-15 | 5 A @ 250V AC | 5 A @ 120V AC |
| Inductive: DC-13 | 3 A/24V DC | |
| Environmental and Physical Characteristics | ||
| Enclosure Type Rating/ Terminal Protection |
IP40 (NEMA 1), DIN 0470/ IP20, DIN 0470 |
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| Operating Temperature [C (F)] | -10…+55 ° (14…131 °) | |
| Vibration | 0.75 mm (0.30 in) peak, 10…55 Hz | |
| Shock | 30 g, 11 ms half-sine | |
| Mounting | 35 mm DIN Rail | |
| Weight [g (lb)] | 360 (0.79) | |
| Conductor Size, Max. | 1 x 2.5 mm2 (14 AWG) stranded, 1 x 4 mm2 (12 AWG) solid | |
| ¬ Usable for ISO 13849-1:2006 and IEC 62061. Data is based on the following assumptions: - Mission time/Proof test interval of 20 years - Functional test at least once within six-month period |
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Product Selection
| Description | Sensor Voltage | Sensor Size (mm) | Sensing Distance (mm) | Terminals | Reset Type | Control Unit Voltage | Cat. No. |
| Controller and Sensors | 24V DC supplied by Control Unit | 12 | 3 | Fixed | Automatic/Manual | 24V AC/DC | 440R-S07279 |
| 110/230V AC | 440R-S07280 | ||||||
| 18 | 5 | 24V AC/DC | 440R-S07281 | ||||
| 110/230V AC | 440R-S07282 | ||||||
| 30 | 10 | 24V AC/DC | 440R-S07283 | ||||
| 110/230V AC | 440R-S07284 | ||||||
| When you order a combination Cat. No. | You will receive a control unit, an NPN sensor and a PNP sensor. |
| 440R-S07279 | 440R-S07139, 872C-D3NN12-E2, and 872C-D3NP12-E2 |
| 440R-S07280 | 440R-S07140, 872C-D3NN12-E2, and 872C-D3NP12-E2 |
| 440R-S07281 | 440R-S07139, 872C-D5NN18-E2, and 872C-D5NP18-E2 |
| 440R-S07282 | 440R-S07140, 872C-D5NN18-E2, and 872C-D5NP18-E2 |
| 440R-S07283 | 440R-S07139, 872C-D10NN30-E2, and 872C-D10NP30-E2 |
| 440R-S07284 | 440R-S07140, 872C-D10NN30-E2, and 872C-D10NP30-E2 |
Accessories
| Description | Power Supply | Size (mm) | Output Type | Cat. No. |
| Control Unit Only | 24V AC/DC | 45 | 2 N.O. & 1 N.C. | 440R-S07139 |
| 110/230V AC | 2 N.O. & 1 N.C. | 440R-S07140 | ||
| Sensor Only | 24V DC supplied by Control Unit | 12 | NPN | 872C-D3NN12-E2 |
| PNP | 872C-D3NP12-E2 | |||
| 18 | NPN | 872C-D5NN18-E2 | ||
| PNP | 872C-D5NP18-E2 | |||
| 30 | NPN | 872C-D10NN30-E2 | ||
| PNP | 872C-D10NP30-E2 | |||
| 500 mA fuse—Bussmann Cat. No. ETF-500 mA | 440R-A31562 | |||
Approximate Dimensions
Dimensions are shown in mm (in.). Dimensions are not intended to be used for installation purposes.
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Block Diagram
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Typical Wiring Diagrams
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