3RS17051FW00 SIEMENS, 3RS17051FW00 Datasheet - Page 47

• Manufacturer Part Number: 3RS17051FW00
• Description: INTERFACE CONVERTER
• Manufacturer: SIEMENS

Specifications of 3RS17051FW00

• Input Type: Selectable Current
• Output Type: Selectable Current
• Supply Voltage: 240V
• No. Of Input Channels: 1
• Mounting Type: DIN Rail
• Isolation Input: Isolated
• External Width: 17.5mm
• Input Current Max: 20mA
• No. Of Channels: 1

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Overview
Thermistor motor protection devices are used for direct
monitoring of the motor winding temperature. For this purpose,
the motors are equipped with temperature-dependent resistors
(PTC) that are directly installed in the motor winding and abruptly
change their resistance at their limit temperature.
Benefits
• Thanks to direct motor protection, overdimensioning of the
• No additional overload protection equipment is necessary.
• No settings on the device are necessary.
• Electronically optimized output thanks to variants with gold-
• Rapid error diagnosis thanks to variants that indicate open-
• Screw-type or spring-loaded terminals.
motors is not necessary.
plated contacts.
and short-circuit in the sensor circuit.
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Application
Direct motor protection through temperature monitoring of the
motor winding offers 100 % motor protection even under the
most difficult ambient conditions, without the need to make
adjustments on the device. Versions with gold-plated contacts
ensure, in addition, a high switching reliability that is even higher
than an electronic control:
• At increased ambient temperatures
• For high switching cycle frequency
• For long start-up and braking procedures
• Used together with frequency converters
(low speeds)
3RN1 Thermistor Motor Protection
Monitoring Relays
Siemens LV 1 · 2006
For PTC sensors
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