2TLC172245M0201, rev. B
11
www.abb.com/jokabsafety
2013-04-22
4 Installation and maintenance
Installation
1. The installation of all ABB Jokab Safety interlock switches must be done 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 mm
2
. The switch
head postion 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 3 mm when the guard is closed and against the stop. (See
illustration).
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 debris entering
the switch mechanism.
4. Always use the circuits 11-12 and 21-22 to ensure monitoring of the lock.
For MKey 8: At installation choose the status of Terminals 33 and 34 by setting the slide switch inside the switch
housing. (Terminals 33 – 34 are selectable to be used either as power feed to LED2 or as a voltage free
auxiliary circuit to indicate lock status).
If LED2 is used always check for correct DC polarity.
Terminal 33: 0VDC Terminal 34: +24VDC
LED1 Status of Solenoid
LED2 Status of Lock
5. After installation check operation of all control circuits and the locking function. For applications with a run down
time after turning off power, ensure that the correct time delay has elapsed before energising the solenoid.
LED 1 RED will illuminate when power is applied to A1 and A2 (solenoid feed).
LED 2 GREEN (if used) will be illuminated when the actuator is locked. (Not on MKey 9M)
Warning!
All the safety functions must be tested before starting up the system.
8 actuator entry positions
rotatable head
Top or side
Manual release points
