3
MZM 120
Operating instructions
Safety switch with interlocking function
EN
Electrical data - Safety inputs:
Safety inputs:
X1 and X2 (PELV unit)
Voltage range:
−3 V … 5 V (Low)
15 V … 30 V (High),
typically 4 mA at 24 V
Electrical data - Safety outputs:
Safety outputs:
Y1 and Y2, NO function,
dual-channel
Fuse rating:
short-circuit proof, p-type
Voltage drop:
1 V
Leakage current I
r
:
≤ 0.5 mA
Operating current I
e1
:
max. 0.25 A
Minimum operating current I
m
:
0.5 mA
Utilisation category:
DC-13
Electrical data - Diagnostic output:
Fuse rating:
short-circuit proof, p-type
Voltage drop:
< 4 V
Operating current I
e2
:
max. 0.05 A
Utilisation category:
DC-13
Wiring capacitance for serial diagnostics:
max. 50 nF
Electrical data - Magnet control IN:
(PELV unit)
Voltage range:
−3 V … 5 V (Low)
15 V … 30 V (High);
typically 4 mA bei 24 V,
dynamic 20 mA
LED switching conditions display:
- Supply voltage U
B
:
green LED
- Operating condition:
Yellow LED
Error / functional defect:
red LED's
Dimensions:
40 x 179 x 40 mm
Use isolated power supply only. If the cable and connector
assembly is not listed for Type 12 or higher, then the device
shall be used in a Type 1 environment only.
2.6 Safety classification
Standards:
EN ISO 13849-1, IEC 61508,
IEC 60947-5-3
PL:
up to e
Control category:
up to 4
PFH value:
4.3 x 10
-9
/ h
SIL:
suitable for SIL 3 applications
Service life:
20 years
Classification:
PDF-M
3. Mounting
3.1 General mounting instructions
For fitting the MZM 120 safety switch and the actuator, two mounting
holes for M6 screws with washers (washers included in delivery) are
provided.
The safety switch must be used as end stop.
For a safe operation of the system, the angle between the safety switch
and the actuator compulsory must be ≤ 2°. After fitting, the unused
fixing holes must be covered by means of the provided blanking plugs.
To remove these plugs, if required, exert pressure on the topmost ex-
tremity (when the connector is fitted downwards) or press on the right-
hand side of the plugs on the anchorage plate of the actuator. When
fitting the actuator when the safety switch is used for the protection of
man, refer to the “Safety instructions”.
Safety sensor and actuator must be permanently fitted to the
safety guards and protected against displacement by suitable
measures (tamperproof screws, gluing, drilling, pinning).
At an ambient temperature of ≥ 50 °C, the MZM 120 must be
fitted so that it is protected against unintentional contact with
persons. Please observe the remarks of the standards
EN ISO 12100, EN 953 and EN 1088.
The safety component must be operated in the operating
direction of the latching force (refer to image).
Axial misalignment and operating direction of the latching force
±
5
mm
±
3 mm
3.2 Dimensions
All measurements in mm.
Safety switch
40
1
40
92
68
163
15,5
6,3
13
4
M12
28
Actuator
40
24
20
4
3
100
160
9
78
20
6,3
8