Technische Änderungen vorbehalten. Zum späteren Gebrauch aufbewahren. A5E33506008001A/RS-AA/001
Subject to change without prior notice. Store for use at a later date. © Siemens AG 2014
Installation and commissioning
Install as described in Assembly Instructions 3ZX1012-0RN10-1AA1 (enclosed with each device).
3RN1 devices are suitable for snap-on mounting onto a 35 mm standard rail in accordance with EN 60715 or for screw
mounting with an adapter (accessory).
They can be mounted in any position.
If the device has a "manual reset" function, the test function can be activated and tripping simulated by pressing the
blue test/reset button for > 2s.
Check that the protection function is working correctly prior to starting up the machine or plant.
Maintenance and repair
These devices require no maintenance.
All repairs to the devices must only be carried out by the manufacturer.
Warranty
All warranty claims are subject to compliance with these Operating Instructions (Safety and Commissioning
Instructions) and the Assembly Instructions 3ZX1012-0RN10-1AA1.
Information
• The machine or plant must also be shut down immediately if the thermistor motor protection tripping unit is tripped in conjunction
with a frequency converter. This must be taken into account in the circuit design.
• 3RN1 thermistor motor protection tripping units are suitable for protecting motors and machines with the EEx e type of
protection. They have been tested and approved by the Physikalisch Technische Bundesanstalt (PTB) (German Federal Testing
Laboratory) in Brunswick.
• The devices are only allowed to be assembled and installed by suitably trained persons in accordance with the relevant
standards and regulations!
• The 3RN10 is not intended for installation in potentially explosive atmospheres. If it needs to be installed in a potentially
explosive atmosphere, the 3RN1 must be provided with a flameproof enclosure.
• Devices with a 24 V AC/DC control voltage must be provided with electrical isolation in the form of a battery system or a safety
isolating transformer in accordance with DIN EN 61558-2-6.
• Devices with an "Auto RESET" function are automatically reset when the cooling time expires. In this case, an external interlock
(latching with a separate ON/OFF button) must be provided to ensure that the monitored machine does not start up again
independently.
• Devices with an "Auto RESET" function are not allowed to be used in applications where serious injury to persons or
considerable damage to materials could ensue if the machine or plant starts up again unexpectedly.
• If a device without a short-circuit detection function is used, the sensor resistance must be measured with a suitable instrument
when the machine or plant is started up as well as after all modifications or maintenance work (assembly, dismantling). The
sensor circuit must be tested for short-circuiting if the resistance is < 50 W.
• If 3RN1000 units are used to protect EEx e motors, it is advisable to monitor the control voltage separately because there is no
Ready LED to indicate that this voltage is present.
• If 3RN1013-.BW01 units are used to protect EEx e motors, it is advisable to monitor the control voltage separately because the
output state of the auxiliary contact elements does not change (using bistable relays).
Further information about the 3RN10 can be found in the Siemens Industrial Controls Catalog IC 10 or on the
Internet at:
http://support.automation.siemens.com
Technical Assistance:
Phone: +49 (911) 895-5900 (8 a.m. to 5 p.m. CET) SIEMENS AG
Fax: +49 (911) 895-5907 Technical Assistance
E-mail: technical-assistance@siemens.com Breslauer Str. 5
Internet: www.siemens.com/sirius/technical-assistance D-90766 Fürth, Germany