Presence Sensing Safety Devices Safety Light Curtain Interfaces 120V AC Power Supply and Safety Relay Specifications Input Power 120/230V AC Power Consumption 2W/4W Inputs 1 N.C. or 2 N.C. or 2 PNP (light curtain) Maximum Input Resistance 110 ohms Reset Automatic/Manual Outputs 3 N. O. Safety 1 N.C. Auxiliary nonsafety Output Rating N.O. B300, AC15, 5A/250V AC N300, DC13, 3A/24V DC Min. Switched Current/Voltage 10mA/10V Description Power ON Delay 1 second The Allen-Bradley Guardmaster 120V AC interface box consists of a NEMA 4 rated lockable metal enclosure, a DIN mount 3amp, 24V DC power supply and either a single or dual 22.5mm safety relay(s). Response Time 15ms The single safety relay module provides 3 N.O. safety and one N.C. auxiliary (nonsafety) “potential free” relay outputs. The dual safety relay configuration allows for two pairs of safety light curtains to independently control one or two machines. The safety relay(s) can be configured for manual reset or automatic reset. The resetting function can be through the key switch mounted on the front cover of the interface box. Pre punched holes located on the bottom of the enclosure allow for easy wiring of the system. Relay Module Indication LEDs K1 Green = Power Green = K1 Closed, if K1 alone is lit, check for short across reset button K2 Green = K2 Closed Operating Temperature -5°C to +55°C (+23° to +131°F) Humidity 90% RH Enclosure Protection NEMA 4, IP65 Max. Conductor Size 1 x 2.5mm2 (14AWG) stranded 1 x 4mm2 (12AWG) solid Weight 4886/5113g (10.75/11.25lbs) Electrical Life 222V AC/4A/880VA 100,000 operations cos 0 = 0.35 Maximum Operating Frequency 1200 cycles/hour Mechanical Life 2,000,000 operations Vibration 0.35mm 10-55Hz Shock 10g, 16ms, 100 shocks 100ms Recovery Time 2-54 Presence Sensing Safety Devices Safety Light Curtain Interfaces 120V AC Power Supply and Safety Relay Product Selection Safety Outputs 3 N.O. 6 N.O. Auxiliary Outputs 1 N.C. 2 N.C. Power Supply Catalogue Number 440L-M8400 440L-M8500 24V DC Approximate Dimensions—mm (inches) Dimensions are not intended to be used for installation purposes. 200.0 (7.87) 161.9 (6.37) 301.6 (11.87) 3.17 (0.12) 1.77 (0.07) 63.5 (2.5) 22.2 (0.87) 104.7 (4.12) 2-55 Presence Sensing Safety Devices Safety Light Curtain Interfaces 120V AC Power Supply and Safety Relay Typical Wiring Diagram M8400 Single Relay L Light Curtain Interface Box Fuse Fuse L1 K3 6 7 8 9 10 11 12 13 14 15 16 17 18 Fuse 4 5 Fuse K4 1 2 3 Machine Prime Mover Elements Receiver Transmitter Relay Man. Restart (Jump 15 & 16, 17 & 18) Relay Auto Restart (Jump 16 & 17) PE +24V OSSD1 OSSD2 GND TEST PE TEST GND +24V K3 K4 K3 K4 K3 N +24V To red wire of Safe/GuardShield Receiver 2-56 Arc Suppression Devices K4 Relay Auto Restart w/ MPCE Feedback (N.C. contacts between 16 & 17) Man. Restart Internal to Light Curtain (Jumper 16 & 17) OR (Jumper Req’d if mts not used) Relay Man. Restart w/ MPCE Feedback (N.C. contacts between 15 & 16, Jumper 17 & 18) L2 Presence Sensing Safety Devices Safety Light Curtain Interfaces 120V AC Power Supply and Safety Relay Typical Wiring Diagram M8500 Dual Relay L1 L LC1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 LC2 Relay Man. Restart Receiver Transmitter Receiver Transmitter LC1 (Jump 17 & 18, 19 & 20) OSSD1 OSSD2 GND +24V PE GND +24V PE TEST TEST OSSD1 OSSD2 GND +24V PE GND +24V PE TEST TEST K4 (Jumper Req’d if mts not used) K5 K4 +24V K4 To red wire of +24V Safe/GuardShield Receiver LC1 K6 Relay Auto Restart w/MPCE Feedback (N.C. contacts between 21 & 22) K3 (Jumper Req’d if mts not used) Arc Suppression Devices 100Ω, 2.2µF) Relay Man. Restart w/MPCE Feedback K5 K6 (N.C. contacts between 18 & 19) OR (Jump 21 & 22) (N.C. contacts between (N.C. contacts between 17 & 18, Jumper 19 & 20) 20 & 21, Jumper 22 & 23) K3 OR (Jump 20 & 21, 22 & 23) Relay Auto Restart (Jump 18 & 19) K3 N Fuse K6 Fuse K4 Light Curtain Interface Box Fuse K5 Fuse K3 LC2 Man. Restart Internal to To red wire of Light Curtain Safe/GuardShield Relay Auto Receiver (Jumper 21 & 22) LC2 K5 K6 2-57