Safety
Leuze electronic
TNT 35 und TNT 35/7-24V
9
T
N
T
35/
7-
24V
DEUTSCH
ENGLISH
FRANÇAIS
IT
ALIANO
ESPAÑO
L
NEDERLANDS
The following table shows the safety-related characteristic parameters of the TNT 35 and
TNT 35/7-24V series.
Table 2.1-1:
Safety-related characteristic parameters of the
TNT 35 and TNT 35/7-24V series
• The Test Monitoring Unit is used in combination with one or more Multiple Light Beam
Safety Devices or Safety Light Curtains to safeguard danger zones or points of
operation.
• The control of the machine or system that is to be safeguarded must be electrically
influenceable. A switch command initiated by a TNT 35 or TNT 35/7-24V must result in
an immediate shutdown of the dangerous movement.
• The "Reset" acknowledgment button for unlocking the start/restart interlock must be
mounted outside the danger zone and in such a way that the entire danger zone can be
seen from its mounting location.
• Message outputs (state outputs) must not be used for switching safety-relevant signals.
• The Test Monitoring Unit is designed for installation in a cabinet or a protective housing
with a protection rating of at least IP 54.
• The 24 V DC ±20% power supply must guarantee safe isolation from the mains voltage
and be able to bridge a power outage period of 20 ms.
• Depending on external wiring, dangerous voltages may be present at the switching
outputs. In addition to the power supply, these must be switched off and safeguarded
against being switched back on prior to all work on the TNT 35.
• These operating instructions must be included with the documentation of the machine on
which the protective device is installed so that they are available to the operator at all
times.
• Manipulating the Test Monitoring Unit also voids all warranty claims against the
manufacturer of the Test Monitoring Unit.
• The Test Monitoring Unit must be tested regularly by competent personnel.
• The safety distance between the AOPD and the point of operation is to be maintained. It
is calculated according to the formulas for machine-specific C standards or given in the
general B1 standard ISO 13855. The reaction time of the Test Monitoring Unit and the
braking time of the machine must be taken into account.
• Two switching contacts must always be looped into the switch-off circuit of the machine.
To prevent welding, relay switching contacts must be fused/protected externally accord-
ing to the technical data.
• The Test Monitoring Unit must be exchanged after a maximum of 20 years. Repairs or
the exchange of parts subject to wear and tear do not extend the service life.
Type in accordance with IEC/EN 61496
Type 2
Performance Level (PL) in accordance with
ISO 13849-1: 2008
PL d
Category in accordance with ISO 13849-1
Cat. 2
Average probability of a failure to danger
per hour (PFH
d
)
8.8 x 10
-8
1/h
Mean time to dangerous failure (MTTF
d
)
69 years
