2TLC172249M0201, rev. B
7
www.abb.com/jokabsafety
2013-04-10
4 Installation and maintenance
Installation and maintenance
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. The use of a safety relay is required for monitoring coded switches. These relays monitor 2 redundant circuits
as per ISO13849-1 for up to PL e / Category 4 protection. Coded non-contact switches are designed to operate
with most dual channel safety relays to satisfy IEC 60947-5-3 PDF-S.
3. M4 mounting bolts must be used to fix the switches. Tightening torque for mounting bolts to ensure reliable
fixing is 1.0 Nm.
Installation on ferrous materials may reduce the sensing distance.
The recommended setting gap is 5 mm. The Safety switch must not be used as a mechanical stop or be
adjusted by striking with a hammer.
The actuator must not be allowed to strike the switch. Do not mount adjacent switches or actuators closer than
30mm. Typical misalignment tolerance after setting is 5 mm.
4. After installation always check each switch function by opening and closing each guard individually in turn and
ensuring that the Green LED on the switch and the LED’s on the safety relay are illuminated when the switch is
closed and are extinguished when the switch is open.
5. Check that the machine stops and cannot be re/started when each switch is open.
Warning!
All the safety functions must be tested before starting up the system.
Maintenance
Monthly:
Check alignment of actuator and look for signs of mechanical damage to the switch casing. Check wiring
for signs of damage.
Every 6 months:
Check each switch function by opening and closing each guard individually in turn and ensuring
that the Green LED on the switch and the appropriate LED’s on the safety relay are illuminated when the switch is
closed and are extinguished when the switch is open. Check that the machine stops and cannot be re-started when
each switch is open.
Warning!
The safety functions and the mechanics shall be tested regularly, at least once every year to confirm that
all the safety functions are working properly.
Warning!
In case of breakdown or damage to the product, contact the nearest ABB Jokab Safety Service Office or
reseller. Do not try to repair the product yourself since it may accidentally cause permanent damage to the product,
impairing the safety of the device which in turn could lead to serious injury to personnel.
Caution!
ABB Jokab Safety 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.
Note that the red model (Sense7) is obsolete.
It is only the stainless steel model (Sense7Z) that is active.
