Assembly / What's Included

A PowerSafe emergency stop station built on the Allen-Bradley 800F-1YMD81 includes the yellow plastic, one hole enclosure with a twist to release 40 mm actuator, one self-monitoring contact block (SMCB) plus the additional N.C. and N.O. contacts, wiring diagram for safety circuit integration, and the 8 pin DC Micro quick disconnect cable. No separate contact blocks or mounting hardware need to be ordered, since the station ships pre-wired and factory sealed. For GuardLink integration, pair with a 5-pin EMSS GuardLink enabled tap (Allen-Bradley 440S series); for SensaGuard integration, connect directly to a 5- or 8-pin SensaGuard non-contact switch. A Guardmaster safety relay or safety PLC completes the circuit and is ordered separately.

Configuration Options

• 800F-1YMD51: for GuardLink enabled taps; illuminated when activated; 2 N.C. safety circuits; 24V AC/DC
• 800F-1YMD52: for 5-pin SensaGuard or 8-pin 440G-LZ/TLS-Z guard locking switches with T-ports; illuminated when activated; 2 N.C. safety circuits plus 1 N.O. illumination circuit; 24V AC/DC
• 800F-1YMD81: for 8-pin safety distribution boxes; illuminated when activated; 2 N.C. safety circuits plus 1 N.O. illumination circuit; 24V AC/DC

Electrical & Mechanical Ratings

• Mechanical durability: 300,000 cycles for the twist to release actuator, per EN 60947-5-1 Annex C
• Operating force: 36 N
• Mounting torque: 1.7 N·m (15 lb·in), plastic enclosure
• Vibration tested at 10 to 2000 Hz, 1.52 mm displacement max, 10 G max, over a 3 hour duration, no damage
• Shock tested at half cycle sine wave for 11 ms, no damage at 100 G
• Contact configuration: 2 N.C. safety circuits, 1 N.O. illumination circuit, 1 self-monitoring contact block (SMCB) included

Environmental Ratings

• Degree of Protection: IP69K rated as an assembled station
• Operating Temperature: -25°C to +70°C (-13°F to 158°F); UL recognized to 55°C (131°F)
• Storage Temperature: -40°C to +85°C (-40°F to 185°F)
• Humidity: up to 95% RH from 25°C to 60°C (77°F to 140°F)

Applicable Safety Standards

Standards to be confirmed by PowerSafe. See: 22 mm Push Button Specifications (Rockwell Automation Publication 800-TD008G-EN-P), Bulletin 800F section, Product Certification table (page 3); and the 800F Enclosed E-Stop Stations Product Profile (Publication 800F-PP006B-EN-P).

Download the Technical Data Sheet

Download the Product Profile

Activation & Reset Issues

Machine won't restart after a trip, or reset doesn't clear

• Confirm the twist to release actuator has been fully rotated to the reset position
• Check that all emergency stops in the same safety string are released before attempting reset
• Verify the safety relay or safety PLC's monitored reset input is functioning
• Inspect the self-monitoring contact block (SMCB) for a fault indication

Wiring & Connector Issues

Intermittent operation or no signal at the safety relay

• Check the 8 pin DC Micro quick disconnect for a secure, fully seated connection
• Inspect the cable for cuts, pinches, or strain at the connector
• Confirm pin assignments match your GuardLink tap or SensaGuard configuration
• Verify continuity through the 2 N.C. safety circuits with the actuator in both positions

GuardLink / SensaGuard Integration Issues

Station won't communicate correctly on a GuardLink or SensaGuard string

• Confirm the correct tap or switch type is used (5-pin EMSS GuardLink tap, 5-pin SensaGuard, or 8-pin 440G-LZ/TLS-Z)
• Check that the device furthest from the safety relay is a SensaGuard or LZ/TLSZ switch, needed for proper pulse testing and cross fault detection
• Verify termination or shorting plugs are installed on unused ports
• Confirm the safety relay or safety PLC is configured for the correct number of devices in the string

Illumination Issues

Station doesn't illuminate when activated

• Confirm 24V AC/DC supply is present at the N.O. illumination circuit
• Check the LED module or lamp for damage
• Verify wiring polarity on the illumination circuit
• Inspect for loose connections at the quick disconnect

Mechanical Issues

Actuator feels loose, sticks, or won't stay engaged

• Inspect the twist to release mechanism for wear, especially if approaching the 300,000 cycle rating
• Check external mounting feet and panel hardware for looseness
• Confirm mounting torque is within the 1.7 N·m (15 lb·in) specification
• Verify the enclosure gasket is seated correctly to maintain the IP69K rating

Environmental Factors

Degraded or inconsistent performance over time

• Check for contamination such as dust, coolant, or washdown residue around the actuator and enclosure seams
• Confirm ambient temperature remains within the rated range, especially near the UL recognized 55°C (131°F) limit
• Inspect for excessive vibration affecting the enclosure or mounting feet
• Verify the enclosure gasket and quick disconnect seals show no signs of degradation

Safety Compliance & Selection

System design concerns or audit findings

• Confirm the Category 4/PLe, SIL 3 rating is maintained through the full safety string, not just at the station
• Verify the correct 800F-1YMD variant (51, 52, or 81) is used for your GuardLink, SensaGuard, or safety distribution box configuration
• Ensure periodic function testing is documented per your safety program
• Confirm the self-monitoring contact block (SMCB) is included where redundancy is required

Preventive Maintenance

To avoid recurring issues:

• Test the actuator and reset function on a regular schedule
• Inspect the quick disconnect connector and cable for wear
• Confirm the enclosure gasket remains intact for washdown environments
• Verify the safety relay or safety PLC correctly registers a trip and reset

Fault Tracking & Continuous Improvement

• Log every trip event, including which station tripped and the conditions at the time
• Look for recurring patterns, such as repeated trips tied to a specific tap or switch in the string
• Use fault history to plan actuator or station replacement before reaching the rated cycle life