Primary Contents

• When the Safety Door Switches are installed, is the direction of installation fixed?
• What are the adjustable head directions and possible points to insert the operation key for D4DS Safety-door Switches?
• What is a mechanical lock?
• Do the indicator terminals for D4DL Safety-door Switches and D4BL have polarity?
• What is diversity?
• What is negative operation and positive operation?
• Do the Safety Door Switches and Safety Limit Switches have the polarity when used with direct current?
• What is slow action?
• What is D4NH Safety-door Hinge Switch?
• What is a direct opening mechanism (forcibly opened contacts) ?
• What are the applications for D4BL Guard Lock Safety-door Switch release keys?
• What is redundancy?
• What are the symbols for NC and NO contacts?
• Do any Safety Door Switches comply with category 4?
• What is the conduit section?
• What are Safety Door Switches with adjustable head directions?
• I'm using D4DL/D4BL Safety-door Switches with a mechanical lock. If the solenoid power is turned ON to release the lock, the door is opened, and then the power to the solenoid is turned OFF, will D4DL/D4BL lock by itself when the key is inserted?
• Where can D4BL-series Guard Lock Safety-door Switch be used?
• The key comes out of D4DL/D4BL Safety-door Switches with a mechanical lock if I insert the key and then turn OFF the solenoid. What causes this and how can I correct it?
• What is Y/Za/Zb?
• What is a Guard Lock Safety-door Switch?