2
Operating instructions
Solenoid interlock
MZM 100
MZM 100 B
EN
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed
1.6 Warning about misuse
In case of improper use or manipulation of the safety
switchgear, personal hazards or damages to machinery
or plant components cannot be excluded The relevant
requirements of the standard ISO 14119 must be observed
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual The manufacturer shall accept no liability for damages
resulting from the use of unauthorised spare parts or accessories
For safety reasons, invasive work on the device as well as arbitrary
repairs, conversions and modifications to the device are strictly
forbidden; the manufacturer shall accept no liability for damages
resulting from such invasive work, arbitrary repairs, conversions and/or
modifications to the device
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
MZM 100
➀
➁
-
➂➃➄
-A
No. Option
Description
➀
Solenoid interlock monitored
B
Actuator monitored
➁
ST
Connector plug M23, (8+1)-pole
ST2
Connector plug M12, 8-pole
➂
1P2P
1 p-type diagnostic output and
2 p-type safety outputs
(only in connection with "Solenoid interlock
monitored")
1P2PW
similar to -1P2P, combined diagnostic signal
guard door closed and solenoid interlock locked
(only in connection with "Solenoid interlock
monitored")
1P2PW2
similar to -1P2P, combined diagnostic signal
guard door closed and can be locked
(only in connection with "Actuator monitored")
SD2P
serial diagnostic output and
2 p-type safety outputs
➃
without latching
(only in connection with "Solenoid interlock
monitored")
R
electrical latching force, typically 30 N
RE
adjustable latching force, typically 30 … 100 N
➄
M
permanent magnet, typically 15 N
MZM 100-B1.1
Actuator
2.2 Special versions
For special versions, which are not listed in the order code below 21,
these specifications apply accordingly, provided that they correspond to
the standard version
2.3 Comprehensive quality insurance to 2006/42/EC
Schmersal is a certified company to appendix X of the Machinery
Directive As a result, Schmersal is entitled to autonomously conduct
the conformity assessment procedure for the products listed in
Appendix IV of the MD without involving a notified body The prototype
test certificates are available upon request or can be downloaded from
the Internet at wwwschmersalcom
2.4 Purpose
The safety switchgears are classified according to ISO 14119
as type 4 interlocking devices
The MZM 100 is designed for application in safety circuits and is used
for monitoring the position of movable separating safety guards A door
detection sensor monitors the closed condition of the safety guard
The optional variable latching force is activated by the detection of the
actuator when the safety guard is closed The latching force exercised
by the permanent magnet keeps the safety guard closed, also in de-
energised condition (approx 15 N)
The different variants can be used as safety switch with interlocking
function either as solenoid interlock
If the risk analysis indicates the use of a monitored interlock
then a variant with the monitored interlock is to be used,
labelled with the symbol The actuator monitoring variant
(B) is a safety switch with an interlock function for process
protection
The safety function of MZM 100 variant "Solenoid interlock monitored"
consists of safely monitoring a magnetic interlocking force for a safety
guard, safely switching off the safety outputs when the magnetic
force drops below a defined magnetic force and maintaining the safe
switched off condition of the safety outputs for as long as the safety
guard is open or unlocked
The safety function of MZM 100 B variant "Actuator monitored" consists
of safely switching off the safety outputs when the safety guard is
opened and maintaining the safe switched off condition of the safety
outputs for as long as the safety guard is open
Interlocks with power to lock principle may only be used in
special cases after a thorough evaluation of the accident risk,
since the safety guard can be opened immediately on failure
of the power supply or upon activation of the main switch
Series wiring
Series-wiring can be set up The risk time is not altered by wiring in
series The number of components is only limited by the external cable
protection according to the technical data and the line loss Up to 31
components can be wired in series
In devices with the serial diagnostics function (ordering suffix -SD), the
serial diagnostics connections are wired in series and connected to a
SD Gateway for evaluation purposes
Wiring examples for series-wiring, refer to appendix
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level If multiple safety sensors are involved in the
same safety function, the PFH values of the individual
components must be added
The entire concept of the control system, in which the safety
component is integrated, must be validated to the relevant
standards
