CU2 Datasheet, PDF (1/4 Pages) Allen-Bradley – Stop Motion Monitors

Safety Relays
Stop Motion Monitors
CU2
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.
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 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
Specifications
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
Maximum Input Resistance
1 NPN and 1 PNP, normally open
500 Ω
Reset
Automatic/Manual
Outputs
➊ Output Utilization per IEC
60947-5-1 (Inductive)
2 N.O. Safety; 1 N.C. Auxiliary
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
Impulse Withstand Voltage
2500V
Operating Temperature
-10°C to +55°C (+14°F to +131°F)
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
Torque Settings—terminal
screws
3
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.
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