440F-C251D Datasheet, PDF (1/3 Pages) Allen-Bradley – Safety Edges

Description
The Safedge controllers are designed to operate with the Safedge
profiles. The controller continuously monitors the profile for
actuation and generates an output signal when the profile is
depressed.
The Safedge controller provides a low voltage to the profile. When
the profile is pressed, the controller detects a change in resistance
and turns off its output relays. When pressure is released from the
profile, the output relays of the controller return to an on state. The
controller has redundant voltage free positively-guided output relays
which can be used to interface with a machine control system.
The ‘251’ controller comes capable of operating at 24V AC/DC, or
120/230V AC from separate terminals. An internal switch changes
the operating voltage from 120V AC to 230V AC. The ‘252’
controller operates at 24V AC/DC.
An auxiliary output relay is available to provide a signal about the
controller’s status. Three LEDs indicate whether the controller is in
RUN, STOP or OPEN condition. The controller operates in manual
or automatic reset mode.
Features
• 1 N.O. or 2 N.O. Safety Outputs
• 1 N.C. Auxiliary Output
• 24V AC/DC or 120/240V AC
• Output Monitoring
• LED Indicators for RUN, STOP and OPEN
• Automatic/Manual Reset
Presence Sensing Safety Devices
Safety Edges
Safedge™ Controllers
Specifications
Standards
Safety Category
Approvals
Power Supply 251
252
Power Consumption 251
252
Fuses, Internal 251D, 251P
251P
252D
Fuses, External
Safety Input Profile
Monitoring
Maximum Input Impedance
Profile
Monitoring Circuit
Outputs 251 Safety
252 Safety
251, 252 Auxiliary
Output Rating
Min. Switching Current/Volt.
Max. Response Time
Indication LEDs
Impulse Withstand Voltage
Installation Group
Pollution Degree
Operating Temperature
Humidity
Enclosure Protection
251D, 252D
251P
Terminal Protection
Max Conductor Size
251D, 252D
251P
Case Material
Weight 252D
251D
251P
Vibration
Shock
EN1760-2, EN954-1, ISO 13849-1,
AS4024.5, EN954-1, ANSI B11.19
Cat. 3 per EN954-1
CE marked for all applicable directives,
cULus, TuV
24V AC/DC or 110/230V AC 50/60Hz
24V AC/DC 50/60Hz
<6VA
<4VA
500mA Power Supply, Replaceable
2 x 2A Safety Output, Replaceable
500mA, Resettable
4A on AC, 2A on DC
6KΩ, 12V DC open circuit, 4V DC run
condition
1 N.O.
9KΩ
1KΩ
2 N.O.
1 N.O.
1 N.C.
2A/250V AC, 2A/125V AC
1A/30V DC
10mA/10V
13ms
Green = Run
Yellow = Open Circuit
Red = Stop
2500V
C in accordance with VDE0110
3
-10°C to 55°C (-14°F to 131°F)
90% RH
IP40 (NEMA 1)
IP65 (NEMA 13)
IP20 DIN 0470
1 x 4mm² (10AWG) stranded
1 x 4mm² (10 AWG) solid
1 x 1.1mm² (18AWG) stranded
1 x 1.5mm² (16AWG) solid
Polycarbonate
181g (0.4lbs)
450g (1.0lbs)
650g (1.4lbs)
0.15mm 10-55Hz
10g, 11ms half sine
2-103