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Operating instructions
Solenoid interlock
AZM40
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 required electrical cable and device fuse protection
must be integrated in the installation.
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 switchgear 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: products.schmersal.com.
5. Operating principle and actuator coding
5.1 Magnet control
The bistable interlock is release by operational setting of the IN signal
(= 24 V). If the IN signal is not set (= 0 V), the safety interlock enters
the locked state, provided that the correct actuator is inserted into the
safety interlock.
5.2 Mode of operation of the safety outputs
In the standard AZM40Z 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 AZM40Z solenoid interlock; in that case, the safety outputs are
re-enabled.
The safety guard must not be opened.
In the AZM40B 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.
5.3 Actuator coding
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.
