Safety Interlock Switch with Guard Locking
Installation:
1. Installation of all interlock 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.
To prevent loosening of the switch after installation, always fix the M5 mounting bolts with a thread-locking
compound or secure using self locking nuts.
Tightening torque for the lid screws, conduit entry plugs and cable glands must be 1.5 Nm to ensure IP seal.
Only use the correct size gland for the conduit entry and cable outside diameter.
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 removing the actuator, loosening the 4 head bolts and then rotating
the head to the position required. Re-tighten the head bolts and then check actuator insertion and withdrawal.
Tightening torque for the head bolts is 1.5Nm.
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 switch aperture.
Always fit the aperture plug to the unused entry aperture to prevent 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 elapsed before energising the solenoid.
LED 1 GREEN will illuminate when power is applied to A1 and A2 (solenoid feed).
Hinged Guard Sliding Guard
Application and 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 not easily defeatable interlock switch. When the actuator is inserted into the switch the safety
contacts will close only when power is applied to the solenoid. This will then allow the machine start circuit to be enabled. When the solenoid power is removed the safety contacts are opened
and the machine circuit is broken.
IMPORTANT
: Any hazardous motion has to be controlled and a safe condition initiated in the event of power failure.
P2L versions (power to lock) may not be suitable for machines with a running down
time.
KLM-P2L Operating Instructions
Fig. A
Plastic Body
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 the user 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.
8 actuator entry positions
rotatable head
Internal Terminal Connections:
A1 0V dc
A2 24V.dc
11-12 Safety Circuit 1 –
(must always be used)
21-22
Safety Circuit 2
33-34 Signal Circuit Guard - (Closed when Guard is closed)
43-44 Signal Circuit Guard - (Closed when Guard is open)
LED Function:
Green Solenoid Energised
