schmersal EX-AZM300 User manual

1
EX-AZM300
Operating instructions
Solenoid interlock
EN
1. About this document
1.1 Function
This operating instructions manual provides all the information you
need for the mounting, set-up and commissioning to ensure the safe
operation and disassembly of the safety switchgear. The operating
instructions must be available in a legible condition and a complete
version in the vicinity of the device.
1.2 Target group: authorised qualified personnel
All operations described in this operating instructions manual must
be carried out by trained specialist personnel, authorised by the plant
operator only.
Please make sure that you have read and understood these operating
instructions and that you know all applicable legislations regarding
occupational safety and accident prevention prior to installation and
putting the component into operation.
The machine builder must carefully select the harmonised standards
to be complied with as well as other technical specifications for the
selection, mounting and integration of the components.
1.3 Explanation of the symbols used
Information, hint, note:
This symbol is used for identifying useful additional
information.
Caution: Failure to comply with this warning notice could
lead to failures or malfunctions.
Warning: Failure to comply with this warning notice could
lead to physical injury and/or damage to the machine.
1.4 Appropriate use
The products described in these operating instructions are developed
to execute safety-related functions as part of an entire plant or machine.
It is the responsibility of the manufacturer of a machine or plant to
ensure the correct functionality of the entire machine or plant.
The safety switchgear must be exclusively used in accordance with
the versions listed below or for the applications authorised by the
manufacturer. Detailed information regarding the range of applications
can be found in the chapter "Product description".
1.5 General safety instructions
The user must observe the safety instructions in this operating
instructions manual, the country specific installation standards as well
as all prevailing safety regulations and accident prevention rules.
Further technical information can be found in the Schmersal
catalogues or in the online catalogue on the Internet:
www.schmersal.net.
Content
1 About this document
1.1 Function ..............................................1
1.2 Target group: authorised qualied personnel..................1
1.3 Explanation of the symbols used ...........................1
1.4 Appropriate use ........................................1
1.5 General safety instructions ...............................1
1.6 Warning about misuse ...................................2
1.7 Exclusion of liability .....................................2
2 Product description
2.1 Ordering code .........................................2
2.2 Special versions........................................2
2.3 Comprehensive quality insurance to 2006/42/EC ..............2
2.4 Purpose ..............................................2
2.5 Technical data .........................................3
2.6 Safety classication .....................................3
3 Mounting
3.1 General mounting instructions .............................4
3.2 Manual release ........................................5
3.3 Dimensions ...........................................5
4 Electrical connection
4.1 General information for electrical connection..................6
5 Operating principles, coding and latching force adjustment
5.1 Magnet control .........................................6
5.2 Mode of operation of the safety outputs......................6
5.3 Actuator teaching / actuator detection .......................6
5.4 Adjustment of the latching force............................6
6 Diagnostic function
6.1 Diagnostic-LEDs .......................................7
6.2 Solenoid interlock with conventional diagnostic output ..........7
6.3 Solenoid interlock with serial diagnostic function SD............8
7 Set-up and maintenance
7.1 Functional testing.......................................9
7.2 Maintenance ..........................................9
8 Disassembly and disposal
8.1 Disassembly...........................................9
8.2 Disposal ..............................................9
9 Appendix
9.1 Wiring examples ......................................10
9.2 Connection example ...................................11
10 EU Declaration of conformity
x.000 / 08.2020 / v.A. - 103012521-EN / D / 2020-04-08
EN Operating Instructions . . . . . . . . . .pages 13 to 24
Original
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2
Operating instructions
Solenoid interlock EX-AZM300
EN
The information contained in this operating instructions manual is
provided without liability and is subject to technical modifications. 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
EX-AZM300-
➀
-
➁
-ST-
➂
-
➃
-
➄
No. Option Description
➀
Z Solenoid interlock monitored
B Actuator monitored
➁
Standard coding
I1 Individual coding
I2 Individual coding, re-teaching enabled
➂
1P2P 1 p-type diagnostic output and
2 p-type safety outputs
SD2P serial diagnostic output and
2 p-type safety outputs
➃
Power to unlock
A Power to lock
➄
CL With protective enclosure, door hinge left
CR With protective enclosure, door hinge right
Actuator EX-AZ/AZM300-B1
2.2 Special versions
For special versions, which are not listed in the order code below 2.1,
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 www.schmersal.com.
2.4 Purpose
The non-contact, electronic safety switchgear is designed for
application in safety circuits and is used for monitoring the position and
locking of movable safety guards.
The safety switchgears are classified according to ISO 14119
as type 4 interlocking devices. Designs with individual coding
are classified as highly coded.
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 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.
Conditions for safe operation
The specific ambient temperature range must be observed.
The user must provide for a protection against the permanent
influence of UV rays.
The component must be mechanically protected. In order to
provide for an increased mechanical protection, the solenoid
interlock must be fitted with an additional protective enclosure
(included in delivery).
Series-wiring
Series-wiring can be set up. Response and risk times remain
unchanged by series-wiring. The number of components is only limited
by the external cable protection according to the technical data and
the line loss. Series-wiring of up to 31 EX-AZM300 … SD components
with serial diagnostics is possible. 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.

3
EX-AZM300
Operating instructions
Solenoid interlock
EN
2.5 Technical data
Designation in accordance with the ATEX Directive: DII 3GD
Designation in accordance with standards: Ex nA IIB T5 Gc
Ex tc IIIB T95°C Dc X
Applied standards: IEC 60947-5-1, IEC 60947-5-3, ISO 14119,
EN 60079-0, EN 60079-15, EN 60079-31
ISO 13849-1, IEC 61508, IEC 62061
Enclosure: glass-fibre reinforced thermoplastic, self-extinguishing
Working principle: RFID
Frequency band: 125 kHz
Transmitter output: max. -6 dBm
Coding level according to ISO 14119:
- I1-version: high
- I2-version: high
- Standard coding version: low
Reaction time:
- Actuator: ≤ 100 ms
- Inputs: ≤ 0.5 ms
Duration of risk: ≤ 200 ms
Time to readiness: ≤ 5 s
Series-wiring: Unlimited number of components,
please observe external cable protection,
max. 31 components in case of serial diagnostics
Length of the sensor chain: max. 200 m
Mechanical data
Connection: Connector plug M12, 8-pole, A-coded
Max. impact energy: 7 J with CL/CR protective enclosure
Mechanical life: ≥ 1,000,000 operations
- when used as door stop: ≥ 50,000 operations
for safety guards ≤ 5 kg
and actuating speed ≤ 0.5 m/s
Angular misalignment between
solenoid interlock and actuator: ≤ 2°
Fixing screws: V4A, 2 x M6, strength class 8.8
Tightening torque of the fixing screws: 8 Nm
Latching force: 25 N / 50 N
Holding force Fmax:1.500 N
Holding force FZh:1.150 N
Switching distances to IEC 60947-5-3:
Typical switching distance sn:2 mm
Assured switching distance sao:1 mm
Assured switch-off distance sar:20 mm
Ambient conditions
Ambient temperature: 0 °C … +50 °C
Storage and transport temperature: −10 °C … +90 °C
Protection class: IP66 / IP67 / IP69 to IEC 60529
Protection class: III
Resistance to shock: 30 g / 11 ms
Resistance to vibration: 10 … 150 Hz, Amplitude 0.35 mm
Insulation values to IEC 60664-1:
- Rated insulation voltage Ui:32 VDC
- Rated impulse withstand voltage Uimp:0.8 kV
- Over-voltage category: III
- Degree of pollution: 3
Maximum switching frequency: 0.5 Hz
Electrical Data
Operating voltage UB:24 VDC –15 % / +10 %
(stabilised PELV power supply)
Power consumption device: < 0.1 A
Operating current device with magnet switched on:
- Peak current: < 0.35 A / 200 ms
- Averaged: < 0.2 A
Required rated short-circuit current: 100 A
External Device fuse rating: 2 A (T)
Electrical data – Safety inputs
Safety inputs: X1 and X2
Switching thresholds: −3 V … 5 V (Low),
15 V … 30 V (High)
Current consumption per input: ≤ 5 mA / 24 V
Accepted test pulse duration on input signal: ≤ 1.0 ms
- With test pulse interval of: ≥ 100 ms
Classification: ZVEI CB24I
Sink: C1 Source: C1 C2 C3
Electrical data – Safety outputs
Safety outputs: Y1 and Y2
Switching elements: p-type, short-circuit proof
Utilisation category: DC-12: Ue/Ie: 24 VDC / 0.25 A
DC-13: Ue/Ie: 24 VDC / 0.25 A
Rated operating current Ie:0.25 A
Leakage current Ir: ≤ 0.5 mA
Voltage drop Ud: ≤ 4 V
Cross-wire monitoring by device: Yes
Test pulse duration: ≤ 0.3 ms
Test pulse interval: 1,000 ms
Classification: ZVEI CB24I
Source: C2 Sink: C1 C2
Electrical data - Diagnostic output
Diagnostic output: OUT
Switching element: p-type, short-circuit proof
Utilisation category: DC-12: Ue/Ie: 24 VDC / 0.05 A
DC-13: Ue/Ie: 24 VDC / 0.05 A
Rated operating current Ie:0.05 A
Voltage drop Ud: ≤ 4 V
Serial diagnostic SD
Operating current: 0.15 A
Wiring capacitance: max. 50 nF
Electrical data – Magnet control
Solenoid input: IN
Switching thresholds: − -3 V … 5 V (Low),
5 V … 30 V (High)
Power consumption: 10 mA / 24 V
Magnet switch-on time: 100 %
Accepted test pulse duration on input signal: ≤ 5.0 ms
- With test pulse interval of: ≥ 40 ms
Classification: ZVEI CB24I
Sink: C0 Source: C1 C2 C3
LED switching conditions display
green LED: Supply voltage
yellow LED: Device condition
red LED: Fault
2.6 Safety classification
- of the interlocking function:
Standards: ISO 13849-1, IEC 61508, IEC 62061
PL: e
Control Category: 4
PFH value: 5.2 x 10-10 / h
PFD: 4.5 x 10-5
SIL: suitable for SIL 3 applications
Mission time: 20 years
- of the guard locking function:
Standards: ISO 13849-1, IEC 61508, IEC 62061
PL: d
Control Category: 2
PFH value: 2.0 x 10-9 / h
PFD: 1.8 x 10-4
SIL: suitable for SIL 2 applications
Mission time: 20 years
The safety consideration of the guard locking function only
applies for standard devices with monitored solenoid interlock
EX-AZM300Z-…-1P2P-… (see Ordering code). A safety
assessment of the guard locking function for devices with
serial diagnostics "SD2P" is not allowed due to the non-safe
locking/unlocking signal from the SD Gateway
The actuation of the interlock must be compared with the
external OSSD enabler. If a shut-down now occurs due to
an unintentional unlocking this is detected by an external
diagnostic.

4
Operating instructions
Solenoid interlock EX-AZM300
EN
If for a certain application the power to unlock version of
a solenoid interlock cannot be used, then for this exception
an interlock with power to lock can be used if additional
safety measure need to be realised that have an equivalent
safety level.
The safety analysis of the guard locking function refers to
the component solenoid interlock EX-AZM as part of the
complete system.
On the customer side further measures such as safe
actuation and safe cable installation to prevent faults are to
be implemented.
In the event of a fault resulting in the unlocking of the guard
locking, this is detected by the solenoid interlock and the
safety gates Y1/Y2 switch off. When such a fault occurs
the protection equipment may open immediately, just once,
before the safe condition of the machine is reached. The
system reaction of category 2 allows that a fault can occur
between tests causing the loss of the safety function which is
detected by the test.
3. Mounting
3.1 General mounting instructions
Please observe the relevant requirements of the standards
ISO 12100, ISO 14119 and ISO 14120.
Any mounting position.
For attachment of the solenoid interlock and the actuator, two mounting
holes for M6 screws are provided.
A washer (2 mm) for symmetrical mounting of the solenoid interlock to
the protective enclosure is included in the delivery. We recommend the
use of washers for mounting of the actuator.
Tightening torque of the fixing screws:
- Solenoid interlock: 8 Nm
- Actuator: 5 … 6 Nm
The actuator must be permanently fitted to the safety
guards and protected against displacement by suitable
measures (tamperproof screws, gluing, drilling of the screw
heads).
The solenoid interlock can be used as an end stop.
Dependant upon the door weight and the actuating speed,
the mechanical life could be reduced.
Actuation direction
Provide for a sufficient insertion of the actuator into the
rotary handle.
The system must only be operated with an angle of ≤ 2° between the
solenoid interlock and the actuator.
When mounting the solenoid interlock onto metallic surfaces, a galvanic
connection must be realised between the mounting surface and fixing
point "A".
2°
±3.5 mm
A
2°
±2mm
Mounting of the solenoid interlock with protective enclosure
The component must be mechanically protected. In order
to provide for an increased mechanical protection, the
solenoid interlock must be fitted with an additional -CL/-CR
protective enclosure (included in delivery).
Note: Not included in delivery
Note: Not included in delivery

5
EX-AZM300
Operating instructions
Solenoid interlock
EN
To avoid any interference inherent to this kind of system and any
reduction of the switching distances, please observe the following
guidelines:
• The presence of metal chips in the vicinity of the solenoid interlock is
liable to modify the switching distance.
• Keep away from metal chips.
3.2 Manual release
For the machine set-up, the solenoid interlock can be unlocked in a
de-energised condition. The solenoid interlock is unlocked by turning
the manual release in the position
Q
.
The normal locking function is only restored after the manual release
has been returned to its original position
P
.
Caution: do not turn beyond the end stop!
After being put into operation, the manual release must be sealed by
means of the seal, which is included in delivery.
C
AB
Key
A: connector plug M12, 8-pole
B: LED indications
C: Manual release
3.3 Dimensions
All measurements in mm.
Solenoid interlock without protective enclosure
88
43
18
35 3
78
103
Ø34
10
25
96
Ø7
121
1
Ø7
14
Solenoid interlock with protective enclosure
178
3478
34
22
153
93
65
Ø6,5
Ø6,5
Actuator EX-AZ/AZM300-B1 (not included in delivery)
23
15
45
146
55
28
Ø6,7 Ø6,7
44
35 31

6
Operating instructions
Solenoid interlock EX-AZM300
EN
4. Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
The voltage inputs A1, X1, X2 and IN must have a protection against
permanent overvoltage. supply units according to IEC 60204-1 is
recommended.
The safety outputs can be integrated in the safety circuit of the control
system.
Requirements for the connected safety-monitoring module:
• Dual-channel safety input, suitable for p-type semi-conductor outputs
Configuration of the safety-monitoring module
If the safety sensor is connected to electronic safety-
monitoring modules, we recommend that you set a
discrepancy time of min. 100 ms. The safety inputs of the
safety-monitoring module must be able to blank a test
impulse of approx. 1 ms. The safety-monitoring module does
not need to have a cross-wire short monitoring function, if
necessary, the cross-wire short monitoring function must be
disabled.
Information for the selection of suitable safety-monitoring
modules can be found in the Schmersal catalogues or in the
online catalogue on the Internet: www.schmersal.net.
Cable design in case of serial diagnostics
When wiring SD devices, please observe the voltage drop on
the cables and the current carrying capacity of the individual
components.
The wiring capacity of the connecting cable of the solenoid interlock
must not exceed 50 nF. Depending on the strand structure, normal
unshielded 30 m long control cables LIYY 0.25 mm² to 1.5 mm² have a
wiring capacitance of approx. 3 … 7 nF.
Accessories for the series-wiring
For convenient wiring and series-wiring of SD components,
the SD junction boxes PFB-SD-4M12-SD (variant for the
field) and PDM-SD-4CC-SD (variant for control cabinet on
carrier rail) are available along with additional comprehensive
accessories. Detailed information is available on the Internet,
www.schmersal.net.
5. Operating principles, coding and latching force adjustment
5.1 Magnet control
In the power to unlock version of the EX-AZM300, the solenoid interlock
is unlocked when the IN signal (= 24V) is set. In the power to lock
version of the EX-AZM300, the solenoid interlock is locked when the
IN signal (= 24 V) is set.
5.2 Mode of operation of the safety outputs
In the standard EX-AZM300Z variant, the unlocking of the solenoid
interlock causes the safety outputs to be disabled. The unlocked
safety guard can be relocked as long as the actuator is inserted in the
EX-AZM300Z solenoid interlock; in that case, the safety outputs are
re-enabled. The safety guard must not be opened.
In the EX-AZM300B version, only the opening of the safety guard
causes the safety outputs to be disabled.
If the safety outputs are already enabled, any error that does not
immediately affect the functionality of the solenoid interlock (e.g. too
high an ambient temperature, interference potential at the safety
outputs, cross-wire short) will lead to a warning message, the disabling
of the diagnostic output and the delayed shutdown of the safety
outputs. safety outputs are disabled if the error warning is active for 30
minutes. The signal combination, diagnostic output disabled and safety
channels still enabled, can be used to stop the production process in a
controlled manner. After the rectification of the error, the error message
is reset by opening the corresponding safety guard. For devices with
serial diagnostic, a bit can be set/deleted in the call telegram to reset
the fault.
5.3 Actuator teaching / actuator detection
Solenoid interlocks with standard coding are ready to use upon delivery.
Individually coded solenoid interlocks and actuators will require the
following "teach-in" procedure:
1. Switch the solenoid interlock's voltage supply off and back on.
2. Introduce the actuator in the detection range. The teach-in procedure
is signalled at the solenoid interlock, green LED off, red LED on,
yellow LED flashes (1 Hz).
3. After 10 seconds, brief yellow cyclic flashes (3 Hz) request the
switch-off of the operating voltage of the solenoid interlock.
(If the voltage is not switched off within 5 minutes, the solenoid
interlock cancels the "teach-in" procedure and signals a false
actuator by 5 red flashes).
4. After the operating voltage is switched back on, the actuator must
be detected once more in order to activate the taught actuator code.
In this way, the activated code is definitively saved!
For ordering suffix -I1, the thus executed allocation of safety switchgear
and actuator is irreversible.
For ordering suffix -I2, the "teach-in" procedure for a new actuator can
be repeated an unlimited number of times. When a new actuator is
taught, the code, which was applicable until that moment, becomes
invalid. Subsequent to that, an enabling inhibit will be active for ten
minutes, thus providing for an increased protection against tampering.
The green LED will flash until the expiration of the time of the enabling
inhibit and the detection of the new actuator. In case of power failure
during the lapse of time, the 10-minutes tampering protection time will
restart.
5.4 Adjustment of the latching force
In order to enable trouble-free functionality of the device, the rotary
handle must be in position I or II when the safety guard is open. In the
intermediate positions, locking is impossible.
The latching force is changed by turning the rotary handle by 180°.
In position I,the latching force is approx. 25 N.
In position II, the latching force is approx. 50 N.

7
EX-AZM300
Operating instructions
Solenoid interlock
EN
6. Diagnostic function
6.1 Diagnostic-LEDs
The solenoid interlock signals the operating condition, as well as errors
through 3-colour LEDs.
green (Power) supply voltage on
yellow (Status) operating condition
red (Fault) Fault (see Table 2: Flash codes of the red diagnostic
LED)
6.2 Solenoid interlock with conventional diagnostic output
The short-circuit proof diagnostic output OUT can be used for central
visualisation or control tasks, e.g. in a PLC.
The diagnostic output is not a safety-relevant output!
Error
Errors, which no longer guarantee the function of the solenoid interlock
(internal errors) cause the safety outputs to be disabled immediately.
Any error that does not immediately affect the safe functionality of the
EX-AZM300 solenoid interlock will lead to a delayed shut-down (refer to
table 2).After the rectification of the error, the error message is reset by
opening the corresponding safety guard.
Automatic, electronic locking takes place if more than one
fault is detected at the safety outputs or a cross circuit is
detected between Y1 and Y2. This means that normal fault
acknowledgement is no longer possible. To reset this type
of interlock, the solenoid interlock must be isolated from the
supply voltage after elimination of the error causes.
Error warning
A fault has occurred, which causes the safety outputs to be disabled
after 30 minutes (LED "fault" flashes, see Table 2). The safety outputs
initially remain enabled. This enables the shutdown of the process in a
controlled manner. An error warning is deleted when the cause of error
is eliminated.
Behaviour of diagnosis output based on interlock with power to
unlock as an example
Input signal magnet control
IN
Normal sequence, door was locked
OUT
t ≤ 200 ms
Door could not be locked or fault
OUT
Key
Safety guard open Safety guard closed
Unlock safety guard Safety guard locked
Locking time Safety guard not locked or fault
Evaluation of the diagnostic outputs
SPS
SPS
AZM 300
AZM 300
IN
OUT
E1.0
A1.0
A1.0
E1.0
A1.0
E1.0
M1.0
M1.0
M2.0
M2.0
&
&
A1.0
E1.0
&
A1.0
E1.0
&
Door can be locked
Door can be locked
Power to unlock: IN = 0 = locking
Door is locked
Door is locked
Power to lock: IN = 1 = locking
EX-AZM 300
PLC
Table 1: Diagnostic information of the safety switchgear
The safety switch signals the switching condition as well as malfunctions via three coloured LEDs installed on the device.
System condition Solenoid control
IN
LED Safety outputs
Y1, Y2
Diagnostic output
OUT
Power to
unlock
Power to
lock
green red yellow EX-AZM300Z EX-AZM300B
Guard open 24 V (0 V) 0 V (24 V) On Off Off 0 V 0 V 0 V
Door closed, not locked 24 V 0 V On Off Flashes 0 V 24 V 24 V
Door closed, locking impossible 0 V 24 V On Off Flashes 0 V 24 V 0 V
Door closed and locked 0 V 24 V On Off On 24 V 24 V 24 V
Error warning 1) 0 V 24 V On Flashes 2) Off 24 V1) 24 V1) 0 V
Error 0 V (24 V) 24 V (0 V) On Flashes 2) Off 0 V 0 V 0 V
Additionally for variant I1/I2:
Teach-in procedure actuator started Off On Flashes 0 V 0 V 0 V
Only I2: teach-in procedure
actuator (release block)
Flashes Off Off 0 V 0 V 0 V
1) after 30 min: disabling due to fault
2) refer to flash code

8
Operating instructions
Solenoid interlock EX-AZM300
EN
Table 2: Error messages / flash codes red diagnostic LED
Flash codes
(red)
Designation Autonomous
switch-off after
Error cause
1 flash pulse Error (warning) at output Y1 30 min Fault in output test or voltage at output Y1, although the output is disabled.
2 flash pulses Error (warning) at output Y2 30 min Fault in output test or voltage at output Y2, although the output is disabled.
3 flash pulses Error (warning) cross-wire short 30 min Cross-wire short between the output cables or fault at both outputs
4 flash pulses Error (warning) temperature too high 30 min The temperature measurement reveals an internal temperature that is
too high
5 flash pulses Actuator fault 0 min Incorrect or defective actuator, bracket broken
6 flash pulses Fault rotary handle 0 min Rotary handle not in authorised intermediate position
Continuous red Internal error / overvoltage or
undervoltage fault
0 min Device defective / supply voltage not within specifications
6.3 Solenoid interlock with serial diagnostic function SD
Solenoid interlocks with serial diagnostic cable have a serial input and
output cable instead of the conventional diagnostic output. If solenoid
interlocks are wired in series, the diagnostic data are transmitted
through the series-wiring of the inputs and outputs.
Max. 31 solenoid interlocks can be wired in series. For the evaluation of
the serial diagnostics line either the PROFIBUS-Gateway SD-I-DP-V0-2
or the Universal-Gateway SD-I-U-... are used. This serial diagnostic
interface is integrated as a slave in an existing field bus system. In this
way, the diagnostic signals can be evaluated by means of a PLC.
The response data and the diagnostic data are automatically and
permanently written in an input byte of the PLC for each solenoid
interlock in the series-wired chain. The request data for each solenoid
interlock is transmitted to the component through an output byte of the
PLC. In case of a communication error between the field bus gateway
and the solenoid interlock, the switching condition of the solenoid
interlock is maintained.
Error warning
A fault has occurred, which causes the safety outputs to be disabled
after 30 minutes. The safety outputs initially remain enabled. This
enables the shutdown of the process in a controlled manner. If an error
(warning) is signalled in the response byte, detailed fault information
can be read out. An error warning is deleted when the cause of error is
eliminated.
Error
A fault has occured, which causes the safety outputs to be disabled.
The fault is reset, when the cause is eliminated and bit 7 of the request
byte changes from 1 to 0 or the safety guard is opened. Faults at the
safety outputs are only deleted upon the next release, as the fault
rectification cannot be detected sooner.
Automatic, electronic locking takes place if more than one
fault is detected at the safety outputs or a cross circuit is
detected between Y1 and Y2. This means that normal fault
acknowledgement is no longer possible. To reset this type
of interlock, the solenoid interlock must be isolated from the
supply voltage after elimination of the error causes.
Accessories for the series-wiring
To provide for a comfortable wiring and series-wiring of
SD components, the connectors and the SD-2V-F-SK SD
junction boxes (variant for the field in closed enclosure) and
SD-2V-S-SK (variant for DIN rail mounting in the control
cabinet) are available.
On wiring SD devices, please pay attention to the voltage
drop on the cables and the current carrying capacity of the
individual components.
Table 3: I/O data and diagnostic data
(The described condition is reached, when Bit = 1)
Bit n° Request byte Response byte Diagnostic error warning Diagnostic error
Bit 0: Magnet on, irrespective
of power to lock or power
to unlock principle
Safety output activated Error output Y1 Error output Y1
Bit 1: --- Safety guard closed AND locking/
unlocking possible
Error output Y2 Error output Y2
Bit 2: --- Actuator detected and locked Cross-wire short Cross-wire short
Bit 3: --- --- Temperature too high Temperature too high
Bit 4: --- Input condition X1 and X2 --- Incorrect or defective actuator,
bracket broken
Bit 5: --- Valid actuator detected Internal device error Internal device error
Bit 6: --- Error warning 1) Communication error between the field
bus Gateway and the safety switchgear
---
Bit 7: Error reset Error (enabling path switched off) Rotary handle not in authorised
intermediate position
Rotary handle not in authorised
intermediate position
1) after 30 min: disabling due to fault
The leading diagnosis message through bit 1 indicates whether locking or unlocking of the guard system is possible. The solenoid interlock cannot be unlocked if e.g. the door pulls the
turret out of its rest position beyond the set latching force. This can occur if doors are heavily distorted or when pulling the door. The solenoid interlock can only be locked if the turret is in
the rest position, i.e. the latching force is sufficient to pull the guard system into the correct position.

9
EX-AZM300
Operating instructions
Solenoid interlock
EN
7. Set-up and maintenance
7.1 Functional testing
The safety function of the safety components must be tested.
The following conditions must be previously checked and met:
1. Check max. axial misalignment of actuator and solenoid interlock.
2. Check max. angular misalignment (see “Mounting” part)
3. Fitting and integrity of the cable 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
switchgear features maintenance-free functionality. A regular visual
inspection and functional test, including the following steps, is
recommended:
• Check for a secure installation of the actuator and the solenoid
interlock
• Check max. axial misalignment of actuator and solenoid interlock.
• Check max. angular misalignment (see “Mounting” part)
• Fitting and integrity of the cable connections.
• Check the switch enclosure for damages
• Remove soiling
Avoid electrostaic charging. Clean the actuator with a damp
cloth only.
Adequate measures must be taken to ensure protection
against tampering either to prevent tampering of the safety
guard, for instance by means of replacement actuators.
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.

10
Operating instructions
Solenoid interlock EX-AZM300
EN
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.
Wiring example 1: Series-wiring of the EX-AZM300 with conventional diagnostic output
The voltage is supplied at both safety inputs of the terminal safety component of the chain (considered from the safety-monitoring module).
The safety outputs of the first safety component are wired to the safety-monitoring module.
Safety outputs → evaluation
X1 Y1
X2 Y2
12356 8
X1
X2
24V
GND
Y1
Y2
12356 8
X1
4
Y1
4
Y1
X2
7
Y2
7
Y2
OUT
24V
GND
OUT
SPS/PLC
IN
SPS/PLC SPS/PLC
IN
24 VDC
GND
SPS/PLC
Wiring example 2: Series-wiring of the EX-AZM300 with serial diagnostic function
The safety outputs of the first safety component are wired to the safety-monitoring module. The serial Diagnostic Gateway is connected to the serial
diagnostic input of the first safety component.
Safety outputs → evaluation
Gateway
Field bus
max. 31 components in series
24 VDC
GND
1235468
X1
Y1
X2
SD IN
SD OUT
1235468
X1
Y1
X2
7
Y2
7
Y2
SD IN
SD OUT
X1 Y1
X2 Y2
SD IN
SD OUT
Y1
Y2
SD IN
24V
GND
24V
GND

11
EX-AZM300
Operating instructions
Solenoid interlock
EN
9.2 Connection example
Function safety switchgear Pin configuration
of the connector
5
8
4
3
2
1
7
6
with conventional
diagnostic output
with serial diagnostic
function
A1 Ue1
X1 Safety input 1 2
A2 GND 3
Y1 Safety output 1 4
OUT Diagnostic output SD output 5
X2 Safety input 2 6
Y2 Safety output 2 7
IN Solenoid control SD input 8
The connector must meet the requirements of EN 60079-0;
Section 20: Supplementary requirements for connectors
(protection against accidental separation).
In addition, the connector must be marked in accordance
with EN 60079-0; section 29.12; table 16 item e:
“WARNING – DO NOT SEPARATE WHEN VOLTAGE
IS LIVE”.

12
Operating instructions
Solenoid interlock EX-AZM300
EN
EX-AZM300-B-EN
Name of the component: EX-AZM300
Type: see ordering code
Marking DII 3G Ex nA IIB T5 Gc
DII 3D Ex tc IIIB T95°C Dc X
Description of the component: Interlocking device with electromagnetic interlock
for safety functions
Relevant Directives: Machinery Directive
RED-Directive
Ex protection (ATEX)
RoHS-Directive
2006/42/EC
2014/53/EU
2014/34/EU
2011/65/EU
Applied standards: IEC 60947-5-3:2013, EN ISO 14119:2013,
EN 300 330 V2.1.1:2017, EN 60079-0:2012 + A11:2013,
EN 60079-15:2010, EN 60079-31:2014,
EN ISO 13849-1:2008 + AC:2009, IEC 61508 Teile 1-7:2010,
EN 62061:2005 + AC:2010 + A1:2013
Notied body for the prototype test
in accordance with the
Machinery Directive 2006/42/EC:
TÜV Rheinland Industrie Service GmbH
Alboinstr. 56, 12103 Berlin
ID n°: 0035
EC BG-test certicate in accordance
with the Machinery Directive 2006/42/EC:
01/205/5281.02/15
Person authorised for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
The conformity assessment procedure for explosion protection was carried out in accordance
with Article 13 of Directive 2014/34/EU, under the responsibility of the manufacturer
K.A. Schmersal GmbH & Co. KG.
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
10. EU Declaration of conformity
K.A. Schmersal GmbH & Co. KG
Möddinghofe 30, 42279 Wuppertal
Germany
Phone: [phone]
Telefax: [phone]
E-Mail: [email protected]
Internet: www.schmersal.com
Place and date of issue: Wuppertal, November 12, 2019
Authorised signature
Philip Schmersal
Managing Director
EU Declaration of conformity
Original K.A. Schmersal GmbH & Co. KG
Möddinghofe 30
42279 Wuppertal
Germany
Internet: www.schmersal.com
We hereby certify that the hereafter described components both in their basic design and construction conform
to the applicable European Directives.