EUCHNER TZ AS1 Serie Mode D'emploi page 8

Operating Instructions
Safety Switch TZ...AS1
Mechanical key release/auxiliary
release with triangular key
Function as for auxiliary release.
Important!
The actuator must not be under tensile stress
f
during manual release.
Escape release
Permits opening of a locked safety guard from the
danger area without tools.
Important!
It must be possible to operate the manual re-
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lease manually from inside the protected area
without tools.
It must not be possible to reach the escape
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release from the outside.
The actuator must not be under tensile stress
f
during manual release.
The escape release meets the requirements of
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Category B according to EN ISO 13849-1:2008.
The half-sequence is sent with the escape release
actuated.
Emergency unlocking
Permits opening of a locked safety guard from
outside the danger area without tools.
Important!
It must be possible to operate emergency
f
unlocking manually from outside the protected
area without tools.
Emergency unlocking must possess a marking in-
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dicating 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 unlocking function meets all other require-
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ments from EN ISO 14119.
Emergency unlocking meets the requirements of
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Category B according to EN ISO 13849-1:2008.
The half-sequence is sent with the emergency
unlocking 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 fastening 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.
Changing the actuating direction
Œ
Ž
Figure 1: Changing the actuating direction
1. Insert the actuator in the actuating head.
2. Remove the screws from the actuating head.
3. Set the required direction.
4. Tighten the screws with a torque of 1.2 Nm.
Electrical connection
The safety switch is connected to the bus system
with a 4-pole connecting cable with M12 plug con-
nector via a passive AS-Interface distribution box
with a yellow and black AS-Interface cable.
View of safety switch
plug connector
1 AS-Interface +
4
2 Auxiliary voltage 0 V
3 AS-Interface -
4 Auxiliary voltage 24 V
1
Figure 2: Terminal assignment 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 assembly.
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 on the safety
switch with an AS-Interface programming device.
Address 0 is the default setting on delivery (the
AS-Interface Fault LED is lit 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 unlocking the guard
locking the safety 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.
8
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.
Observe the following if the guard locking solenoid
on a TZ1..AS1 spring interlock safety switch in the
operating mode door locking for duration of the
time delay is switched on (unlocked) via the second
release contact of a dual-channel safety monitor
and a PLC:
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 the 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
f
with D0 = 1 so that the guard locking solenoid
can be unlocked 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
and D3 for solenoid monitoring can also be polled
by the control system (PLC) (refer to the operating
3 instructions for the AS-Interface safety monitor).
LED indicators
The AS-Interface bus status is indicated by two LEDs
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 area.
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 safety 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 safety guards and activate guard
locking.
The machine must not start automatically.
¨ ¨
It must not be possible to open the safety guard.
¨ ¨
3. Start the machine function.
It must not be possible to release guard locking
¨ ¨
as long as the dangerous machine function is
active.
4. Stop the machine function and release guard
locking.
The safety guard must remain locked until there
¨ ¨
is no longer any risk of injury (e.g. due to move-
ments 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 safety guard.