• Monitors two normally-closed emergency stop switch circuits for a contact failure or wiring fault
• Input monitoring circuit uses a diverse-redundant design
• Requires a reset routine for controlled re-application of power to the machinery as per ANSI standard                     B11.20-1991
• Two output switching channels for connection to control-reliable power interrupt circuits
• Auxiliary non-safety contact for status monitoring by process controller
 
Output Configuration Outputs (K1 and K2): two redundant (i. e. total of four) safety relay (forced-guided) contacts
Contact ratings: Maximum voltage: 250V ac or 250V dc
Maximum current: 4A ac or dc (resistive load)
Maximum power: 1000VA, 20 watts
Mechanical life: 10,000,000 operations
Electrical life: 100,000 at full resistive load
Auxiliary Monitor Output (K3): One non-safety relay contact
Maximum switching voltage: 125V ac or V dc
Maximum switching current: 500 mA (resistive load)
Output Response Time 25 milliseconds maximum
Input Requirements Emergency stop switch must have two normally closed contacts each capable of switching 40 to 100mA @ 12 to 18V dc.
Reset switch must have one normally open contact capable of switching 40 to 100mA @ 12 to 18V dc.
Housing Polycarbonate. Rated NEMA 1 (IEC IP20)
Mounting Mounts to standard 35 mm DIN rail track. Relay safety relay must be installed inside an enclosure rated NEMA 3 (IEC IP54), or better.
Vibration Resistance 10 to 55Hz @ .35mm displacement per IEC 68-2-6
Operating Temperature 0 to 50°C ( 32 to 122°F)