Electrical Connection - EUCHNER STA AS1 Serie Betriebsanleitung

Operating Instructions
Safety Switch STA...AS1
Emergency release
Permits opening of a locked guard from outside the
danger zone without tools.
Important!
It must be possible to operate the emergency
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release manually from outside the protected
area without tools.
The emergency release must possess a mark-
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ing indicating that it may be used only in an
emergency.
The actuator must not be under tensile stress
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during manual release.
The release function meets all other require-
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ments from EN ISO 14119.
The emergency release meets the requirements of
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Category B according to EN ISO 13849-1:2015.
The half-sequence is sent with the emergency
release actuated.
Mounting
NOTICE
Device damage due to improper mounting and
unsuitable ambient conditions
Safety switches and actuators must not be used
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as an end stop.
Observe EN ISO 14119:2013, sections 5.2 and
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5.3, for information about mounting the safety
switch and the actuator.
Observe EN ISO 14119:2013, section 7, for
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information about reducing the possibilities for
bypassing an interlocking device.
Protect the switch head against damage, as well
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as penetrating foreign objects such as swarf,
sand and blasting shot, etc.
The specified IP degree of protection is applica-
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ble only if the housing screws, cable entries and
plug connectors are properly tightened. Observe
the tightening torques.
Changing the actuating direction
Fig. 1: Changing the actuating direction
1. Remove the screws from the actuating head.
2. Set the required direction.
3. Tighten the screws with a torque of 1.5 Nm.
4. Cover the unused actuating slot with the en-
closed slot cover.

Electrical connection

The safety switch is connected to the bus system
with a 4-core connecting cable with M12 plug con-
nector via a passive AS-Interface distribution box
with a yellow and black AS-Interface cable.
1 AS-Interface +
2 Auxiliary voltage 0 V
3 AS-Interface -
4 Auxiliary voltage 24 V
Fig. 2: Terminal assignment of M12 plug connector
The following information applies to devices
with plug connector:
Check that the plug connector is sealed.
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Setup
Setting the AS-Interface address
The address can be set prior to or after mounting.
The AS-Interface address of the safety switch is
set using an AS-Interface programming device.
Addresses 1 to 31 are valid.
The unit is programmed by connecting the program-
ming device to the M12 plug connector of the safety
switch with a programming cable.
Address 0 is the default setting in the delivery state
(the AS-Interface Fault LED is illuminated during
operation).
Configuration in the AS-Interface safety
monitor
(see operating instructions for the AS-Interface
safety monitor and status table)
The safety switch is configured in the AS-Interface
safety monitor with the AS-Interface address set as
follows, for example:
Dual-channel dependent
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Synchronization time = infinite
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In this operating mode, after the guard locking is
released, the guard must be opened each time prior
to restarting.
Dual-channel independent
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The guard locking is opened and closed using the
output D0. When the guard locking is open, the
safety circuit shuts down. It is not necessary to
open the door. Safety is provided again when the
guard locking is closed.
The dual-channel feature and the door contact
are not tested in this configuration. Additional
measures outside the monitor must be provided
for testing.
Dual-channel conditionally dependent
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Independent: In-1
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The guard locking is opened and closed using the
output D0. When the guard locking is open, the
safety circuit shuts down. It is not necessary to
open the door. Safety is provided again when the
guard locking is closed.
The switch is monitored for a malfunction.
C D
B A
Observe the following if the guard locking solenoid
of an STA3..AS1 spring interlock safety switch
is switched on (released) via the second release
contact of a dual-channel safety monitor and a PLC
in the operating mode door locking for duration of
the time delay:
It is not possible to switch off the guard locking
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solenoid by means of the monitor alone.
The control system (PLC) must therefore switch off
the guard locking solenoid in locked position via
AS-Interface output D0 = 0 in order to re-establish
the switch-on conditions for the first OSSD.
The AS-Interface output must be switched on
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with D0 = 1 so that the guard locking solenoid
can be released by the second safety output of
the monitor.
Status signals (not relevant to safety)
The state of the AS-Interface input bits D0 and D1 for
door monitoring and the AS-Interface input bits D2
View of safety switch
and D3 for solenoid monitoring can also be polled
plug connector
by the control system (PLC) (refer to the operating
4 3 instructions for the AS-Interface safety monitor).
LED displays
The AS-Interface bus status is indicated by two LEDs
1 2
(Power, Fault).
Two additional LEDs can be connected via the
AS-Interface bus, e.g. to indicate the status signals
(see Status signals and Technical data).
Function test
WARNING
Fatal injury due to faults during the function test.
Before carrying out the function test, make sure
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that there are no persons in the danger zone.
Observe the valid accident prevention regula-
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tions.
Check the device for correct function after installa-
tion and after every fault.
Proceed as follows:
Mechanical function test
The actuator must slide easily into the actuating
head. Close the guard several times to check the
function. The function of any manual releases (except
for the auxiliary release) must also be tested.
Electrical function test
1. Switch on operating voltage.
2. Close all guards and activate guard locking.
The machine must not start automatically.
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∞
It must not be possible to open the guard.
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3. Start the machine function.
It must not be possible to release guard locking
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as long as the dangerous machine function is
active.
4. Stop the machine function and release guard
locking.
The guard must remain locked until there is no
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longer any risk of injury (e.g. due to movements
with overtravel).
It must not be possible to start the machine
¨
function as long as guard locking is released.
Repeat steps 2 - 4 for each guard.
Inspection and service
WARNING
Danger of severe injuries due to the loss of the
safety function.
If damage or wear is found, the complete switch
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and actuator assembly must be replaced. Re-
placement of individual parts or assemblies is
not permitted.
Check the device for proper function at regular
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intervals and after every fault. For informa-
tion about possible time intervals, refer to
EN ISO 14119:2013, section 8.2.
Inspection of the following is necessary to ensure
trouble-free long-term operation:
correct switching function
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secure mounting of all components
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damage, heavy contamination, dirt and wear
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sealing of cable entry
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loose cable connections or plug connectors.
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Info: The year of manufacture can be seen in the
bottom, right corner of the type label.
Exclusion of liability and warranty
In case of failure to comply with the conditions for
correct use stated above, or if the safety regula-
tions are not followed, or if any servicing is not
performed as required, liability will be excluded and
the warranty void.
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