Safety Interlock Switch with Guard Locking
Application:
Tongue operated switches are designed to fit to the leading edge of sliding, hinged or lift off machine guards to provide positively operated switching contacts to EN60947-5-1.
They are designed to provide robust position interlock detection for moving guards and will remain locked until the solenoid voltage is applied to the switch.
Operation:
The switch is rigidly mounted to the frame of the guard or machine. The actuator is fitted to the moving part (frame) of the guard and is aligned to the switch entry aperture. The actuator
profile is designed to match a cam mechanism within the switch head and provides a positively operated switch. When the actuator is inserted into the switch the safety contacts close and
allow the machine start circuit to be enabled. When the solenoid is energised the safety contacts are positively opened and the machine circuit is broken.
KL1-P KL1-SS Operating Instructions
KL1-P
KL1-SS
IMPORTANT NOTE:
Read and understand these instructions before installing, operating, or maintaining this equipment.
The product is designed to be a component of a customised safety orientated control system. It is the responsibility of each manufacturer to ensure the correct overall functionality of its
systems and machines. IDEM, its subsidiaries and affiliates, are not in a position to guarantee all of the characteristics of a given system or product not designed by IDEM.
Installation:
1. Installation of all switches must be in accordance with a risk assessment for the individual application.
Installation must only be carried out by competent personnel and in accordance with these instructions.
2.
M5 mounting bolts must be used to fix the switch and actuator, the tightening torque to ensure reliable fixing is 4.0 Nm.
Tightening torque for the lid screws, conduit entry plugs and cable glands must be 1.0 Nm to ensure IP seal.
Only use the correct size gland for the conduit entry and cable outside diameter.
Note: For ½” NPT versions, the gland thread length must be limited to10mm maximum.
Tightening torque for the connection terminal screws is 0.7 Nm, max conductor size is 1.0 sq.mm.
The switch head position can be selected by loosening the 4 head bolts and then rotating to the position required.
Tightening torque for the head bolts is 1.5Nm.
Always check for correct 24V.dc polarity to LED 2 (if fitted).
3.
Always fit a mechanical stop to the guard to prevent damage to the front of the switch.
Set the actuator gap to 3mm when the guard is closed and against the stop. (See Fig.A).
Use alignment guides to ensure that the actuator enters the switch without interfering with the sides of the aperture.
Ensure access to at least one of the manual release points.
Always fit the aperture plug to the unused entry aperture to prevent foreign debris entering the switch mechanism.
4.
After installation check operation of all control circuits and the locking function.
For applications with a run down time after removing power, ensure that the correct timing allowance has been made before energising the solenoid.
For hand operated guards, push to release after solenoid energisation.
LED 1 will illuminate when power is applied to A1 and A2 (solenoid feed).
LED 2 (if used) will be illuminated when the actuator is not locked. If extinguished then the switch is locked and the safety contacts are closed.
(Fig. A)
Standard Version
LED2 Version
Maintenance:
Every week: Check correct operation of all circuits and the Lock function. If the actuator shows signs of bending or the switch head housing displays mechanical damage then
remove and replace. IDEM will not accept responsibility for failure of the switch functions if the installation and maintenance requirements shown in this sheet are not
implemented. These requirements form part of the product warranty.
Every 6 months: Isolate power and remove cover. Check screw terminal tightness and check for signs of moisture ingress. Never attempt to repair any switch.
