Issue 8 Installation Instructions for the 81591 GKR/GKL Series Solenoid Key Operated Safety Interlock Switch The control system must be designed so that hazardous motion mWARNING can only take place when the protective guard is locked via the IMPROPER INSTALLATION GKR/GKL Series Solenoid Key Operated Safety Interlock Switch. Consult with local safety agencies and their requirements This control system design must ensure the guard locking when designing a machine-control link, interface, and all device releases only when the dangerous conditions no longer control elements that affect safety. exist (Figure 1). Strictly adhere to all installation instructions. The guard locking device can be specified as either Mechanical Failure to comply with these instructions could result in Lock or Solenoid Lock (see order guide). death or serious injury. Mechanical Lock occurs by internal spring force when the protective guard is closed and the key is inserted. Applying GENERAL INFORMATION voltage to the solenoid unlocks the protective guard. When The MICRO SWITCH GK Solenoid Key Operated Safety Interlock power failure occurs, the protective guard can be unlocked by Switch is designed to lock protective guards that prevent actuating the auxiliary release. access to hazardous motion so that dangerous machine Solenoid Lock occurs by applying voltage to the solenoid after operations can only take place if the protective guard is closed the protective guard is closed and the key is inserted. Removing and locked. Likewise, the protective guard cannot be opened if voltage to the solenoid unlocks the protective guard. hazardous motion is present. Figure 1. Example Safety-Related Control Circuit INPUT CONTROL MOTION Primary Interface Control Back Check GKR/GKL Primary Output Key Operated Hazardous Safety Control Solenoid Safety Machine Motio n Hardware Interlock Switch Primary Input Secondary Monitoring Lines Primary Secondary Monitoring Line Logic PLC Control Non-hazardous Secondary Standard Machine Motion Control Inputs (non-safety related) Sensing and Internet of ThingsMICRO SWITCH GK Solenoid Safety Interlock Switch ISSUE 8 PK 81591 Mount, Wire and Seal Switch SAFETY ANALYSIS TECHNIQUES 1. Conduct Hazard Analysis and Risk Assessment. Refer Step 1 - Ensure you have the following: to: Switch and key Wire (use 90 C wire when ambient temperature is over OSHA Title 29, ANSI Standards 75 C): European Norm EN 1050, Safety of Machines Risk 2 2 - Stranded: 0,75 mm to 2,5 mm , 18-14 AWG, or Assessment 2 2 - Solid: 0,75 mm to 1,5 mm , 18-16 AWG 2. Review Requirements and Safety-Related Parts of the M5 or 10 screws Control System ANSI B11.19-1990 Safeguarding When Referenced by the Other B11 Machine Tool Safety Standards Step 2 - Mount switch and key ANSI B11.20 System Energy Stopping European Norms: mWARNING - EN954-1: Safety Related Parts of the Control IMPROPER INSTALLATION Systems Ensure key travels to the minimum insertion dimension to - EN60204-1: Electrical Equipment of Machines. ensure switch contact transfer (Figure 4). - prEN1088: Interlocking Devices With and Without Ensure key travels to maximum extraction distance to Guard Locking ensure correct operation of the positive break mechanism. Any other appropriate industry safety standards Do not exceed 100 N (22.4 lb) actuation force to key to prevent switch failure (Table 1). Do not use the key as a stop for the door. PERFORM INSTALLATION AS FOLLOWS: Failure to comply with these instructions could result in 1. Assemble Switch Head (applies to Head Options E death or serious injury. and K only) , NOTICE Table 1. Force Characteristics* The TORX screws must be used on this head option to Key actuation force for prevent voiding the warranty. 51 N (11.5 lb) minimum head with detent Key extraction force for 31 N (7 lb) minimum Head options E and K are shipped unattached and may be head with detent indexed in 90 increments (Figure 2). Key actuation force for 22 N (5 lb) minimum head without detent Remove cover Properly seat: Key extraction force for 2 N (0.5 lb) minimum - O ring (1) in its seal groove head without detent - Plunger (2) *Device is in unlocked state Determine required key entry location Place head on housing, moving metal spacer over Ensure proper clearance for switch and key at enough to allow plunger to fall into position (contacts mounting location so that operation of the auxiliary basic switch) release, as well as inspection and replacement, are Securely fasten operating head to switch housing with possible the four TORX screws provided. Torque screws to Properly align switch and key together before 1,36 N-m to 1,80 N-m 12 in-lb to 16 in-lb mounting to equipment Replace cover Mount switch and key (Figures 3 and 4). - Torque switch to mounting surface: 4,9 N-m to Figure 2. Head Options E and K 5,9 N-m 43 in-lb to 52 in-lb M5 or 10 - Torque key to mounting surface: 2,4 N-m to 2,8 N-m 21 in-lb to 25 in-lb M5 or 10 UNLOCK LOCK 2 sensing.honeywell.com