7
MZM 120
Operating instructions
Safety switch with interlocking function
EN
Table 4: Function of the visual diagnostic LED`s, the serial status signals and the safety outputs by means of an example
System condition
LED
Safety outputs
Response byte bit n°:
green red
yellow
Y1, Y2
7
6
5
4
3
2
1
0
Safety guard open
On
Off
Off
0 V
0
0
0
X
0
0
0
0
Safety guard closed, actuator in,
safety guard can be locked
On
Off
Flashes
24 V
0
0
0
1
0
0
1
0
Safety guard closed and locked
On
Off
On
24 V
0
0
0
1
0
1
1
1
Solenoid interlock cannot be locked, safety
guard not correctly closed or solenoid soiled
On
Off
Flashes
0 V
0
0
0
1
0
0
0
0
Error warning
1)
, actuator in
On
flashes
2
On
24 V
0
1
0
1
0
X
1
1
Error
On
flashes
2
Off
0 V
1
0
0
X
0
X
X
0
1)
after 30 min -> fault
2)
refer to flash code
7. Set-up and maintenance
7.1 Functional testing
The safety function of the safety components must be tested. The fol-
lowing conditions must be previously checked and met:
1. Check max. axial misalignment of actuator and safety switch
2. Check max. angular misalignment (see “Mounting” part)
3. Check the integrity of the cable entry and connections
4. Check the switch enclosure for damage
5. Remove particles of dust and soiling
7.2 Maintenance
In the case of correct installation and adequate use, the safety compo-
nent features maintenance-free functionality. We recommend a regular
visual inspection and functional test, including the following steps:
• Check the fixing of the safety switch and the actuator
• Check max. axial misalignment of actuator and safety switch
• Check max. angular misalignment (see “Mounting” part)
• Check the integrity of the cable entry and connections
• Check the switch enclosure for damages
• Remove soiling
Damaged or defective components must be replaced.
8. Disassembly and disposal
8.1 Disassembly
The safety switchgear must be disassembled in a de-energised
condition only.
8.2 Disposal
The safety switchgear must be disposed of in an appropriate manner in
accordance with the national prescriptions and legislations.
9. Appendix
9.1 Wiring examples
The application examples shown are suggestions. They however do not
release the user from carefully checking whether the switchgear and its
set-up are suitable for the individual application
