Bently
View products
Product image is representative; revision or series may vary. Contact us to request a specific version.
Get a quick price for 2D78559G01
For more information on how your data is processed and stored by Apterpower please read our privacy policy
-
Match the complete marking
Confirm the 2D78559G01 style marking and the four-group DIP-switch arrangement on the offered unit.
-
Check the offered item before ordering
Confirm terminal connectors and any optical link components supplied with the quoted item.
Technical specifications for 2D78559G01
-
Manufacturer:EATON
-
Product Category:Machinery Monitoring Systems
-
Spare Part Number:2D78559G01
-
Weight:0.64 kg
-
Tariff Code:8537101190
-
RTD input capacity:11
-
Motor winding inputs:6
-
Motor bearing inputs:2
-
Load bearing inputs:2
-
Auxiliary inputs:1
-
Sensor type 1:10 Ω copper
-
Sensor type 2:100 Ω platinum
-
Sensor type 3:100 Ω nickel
-
Sensor type 4:120 Ω nickel
-
Group-selection switches:8 two-position DIP switches
-
Module input power:120 VAC ±15%
-
Input frequency:50/60 Hz
-
Power consumption:6 VA
-
Operating temperature:0 to 70°C
-
Storage temperature:-20 to 85°C
-
Relative humidity:0-95%, noncondensing
-
Enclosure rating:Type 1
-
Shielded relay link limit:500 ft (152 m)
-
Fiber relay link limit:400 ft (122 m), MP-3000/IQ-1000 II
Information
Overview
Downloads
Applications / Compatibility
Product Precautions
- The module is a temperature-input accessory for a motor-protection relay; sensor type, three-wire connections, shield termination and relay link are selected as one installation.
Temperature role: Motor winding, bearing, load-bearing and auxiliary RTDs
Group setup: Four RTD material groups selected by eight DIP switches
Relay link: Shielded three-conductor or compatible fiber-optic connection
Acceptance focus: Confirm sensor type, wiring, grounding and relay readings
Group setup: Four RTD material groups selected by eight DIP switches
Relay link: Shielded three-conductor or compatible fiber-optic connection
Acceptance focus: Confirm sensor type, wiring, grounding and relay readings
Eaton identifies style 2D78559G01 as the URTD Universal RTD Module in the MP-4000 accessory table. The dedicated IL 17367B instructions define eleven possible inputs: six motor windings, two motor bearings, two load bearings and one auxiliary. Each of the four groups uses one selected RTD type, so different materials within a group cannot be mixed.
The module accepts 10 Ω copper, 100 Ω platinum, 100 Ω nickel and 120 Ω nickel sensors. Eight two-position DIP switches select the group types. Its input supply is 120 VAC ±15% at 50/60 Hz and 6 VA. These are module requirements, distinct from the attached relay supply and sensor circuit.
A shielded three-conductor link can connect the URTD to supported MP-3000, IQ-1000 II, IQ-1000 or IQ-2000 equipment; the first two also support the documented fiber link. Three wires are required between each RTD and the module. Ground only the specified shield end and the single designated module earth terminal according to the original wiring figures.
The module accepts 10 Ω copper, 100 Ω platinum, 100 Ω nickel and 120 Ω nickel sensors. Eight two-position DIP switches select the group types. Its input supply is 120 VAC ±15% at 50/60 Hz and 6 VA. These are module requirements, distinct from the attached relay supply and sensor circuit.
A shielded three-conductor link can connect the URTD to supported MP-3000, IQ-1000 II, IQ-1000 or IQ-2000 equipment; the first two also support the documented fiber link. Three wires are required between each RTD and the module. Ground only the specified shield end and the single designated module earth terminal according to the original wiring figures.
Original wiring reference: Eaton/Cutler-Hammer IL 17367B. Verify the exact relay type, RTD grouping and link before energizing.
Technical downloads for Eaton 2D78559G01: an original Eaton/Cutler-Hammer instruction excerpt and an Apter Power installation and commissioning guide.
-
Original Eaton/Cutler-Hammer URTD instructions
Eaton IL 17367B excerpt - PDF, 6 pages. Documented product identity, system role and applicable technical details. -
Eaton 2D78559G01 installation guide
Prepared by Apter Power - PDF, 3 pages. Identification, installation checks, commissioning and fault isolation.
The reference and installation guide support component identification and service planning. Apply the approved system and site procedures during work.
Motor-protection context: The URTD gathers resistive temperature signals and passes them to a compatible motor-protection device.
Application scope: Use the four documented RTD groups for winding, motor-bearing, load-bearing and auxiliary temperature supervision.
Application scope: Use the four documented RTD groups for winding, motor-bearing, load-bearing and auxiliary temperature supervision.
-
Motor winding monitoring
Connect up to six winding RTDs of one selected material group for relay-based thermal supervision. -
Motor bearing temperatures
Use the two dedicated motor-bearing inputs with the group DIP setting matched to the installed RTD material. -
Driven-load bearing temperatures
Keep the two load-bearing sensor circuits distinct from motor-bearing wiring and settings. -
Auxiliary temperature point
Use the single auxiliary input where the selected relay supports its display and action logic; the manual notes display support on MP-3000 and IQ-1000 II.
Installation and commissioning checks for Eaton 2D78559G01.
Isolate 120 VAC
Disconnect and verify the module power before changing terminals or DIP positions.
Record all DIP settings
Capture the eight switches and identify the RTD material for each of the four groups before exchange.
Use three sensor conductors
Wire each RTD with the specified stranded twisted three-conductor cable; a two-wire run causes incorrect relay operation.
Terminate shields correctly
Connect the sensor cable shield at the module end and insulate it at the RTD end; follow the separate relay-link shield instructions.
Separate voltage classes
Keep RTD/control wiring 45-60 cm from 440 VAC-and-higher conductors and avoid a common raceway.
Ground one earth point
Bond terminal 16 or 32, not both, and compare all relay temperature indications after the change.
Alternative Names
Eaton URTD 2D78559G01
Cutler-Hammer 2D78559G01 URTD Universal RTD Module
2D78559G01 Universal RTD Module
Technical notes
Sensor-group rule: One RTD material is selected for each group; do not mix sensor types within the same group.
Wiring relationship: Use the three-wire RTD circuit and host-specific shield/grounding arrangement in IL 17367B.
Technical reference: Eaton/Cutler-Hammer IL 17367B, pp. 1-6; Eaton MP-4000 manual IB02602002E, accessory Table 1.3.
FAQ View All FAQ
-
How does 2D78559G01 distinguish winding RTDs from bearing RTDs?The module assigns six winding, two motor-bearing, two load-bearing and one auxiliary input to four groups. Match each sensor to the correct terminal and program its group material with the corresponding two DIP switches.
-
Why can one channel on 2D78559G01 read incorrectly after an RTD material change?A 100 Ω platinum curve is not interchangeable with 100 Ω nickel or 120 Ω nickel. Check the installed sensor material and both DIP positions for that entire group; all RTDs in one group must use the same type.
-
Is a two-wire RTD run acceptable on 2D78559G01?The instructions require three conductors between each RTD and the module. If the sensor itself has only two leads, join two cable conductors at the sensor as shown in the manufacturer diagram; do not substitute a two-conductor run.
-
Where should the RTD cable shield for 2D78559G01 be bonded?Bond the shield and drain at the specified module terminal and insulate the far end at the RTD. The relay communication-cable shield has separate host-specific instructions, so do not copy the sensor-cable rule blindly.
-
When can 2D78559G01 use a fiber link to the protective relay?The original instructions document fiber communication with MP-3000 or IQ-1000 II, up to 400 ft (122 m). Confirm the fitted optical hardware and cable path; other listed relay families use the documented shielded electrical link.
-
How are unused RTD positions handled on 2D78559G01?The manufacturer permits unused inputs to remain open or be jumpered without preventing operation. Record which positions are inactive so a later maintenance engineer does not mistake them for failed sensors.
-
What should be checked if 2D78559G01 communicates but values are noisy?Inspect the three-wire RTD terminations, single-ended shields, earth bond and separation from high-voltage conductors. Then compare the relay indication with a known resistance or temperature reference for that RTD type.
-
What acceptance test should follow replacement of 2D78559G01?Confirm 120 VAC supply and the DIP map, check continuity of each sensor circuit, compare all active relay temperatures with the pre-work baseline, and prove the intended alarm or trip logic under a controlled site procedure.
Manufacturers
Supporting new and legacy automation
Whether you're maintaining existing equipment or sourcing parts for current systems, we provide fast, dependable supply you can rely on.
-
Please try to be as accurate as possible with your search.
-
We can quote you on 1000s of specialist parts, even if they are not listed on our website.
-
We can't find any results for “”.
PRODUCTS IN SEARCH PAGE ()
50+ account managers available now
Related reading
Related cases and sourcing guidance
View all case studies
Manufacturers
You May Also Like
Explore related automation components available through Apter Power.
Manufacturers
Product Browsing History
Revisit the products you recently viewed on Apter Power.
SPEAK TO OUR TEAM
Let’s find the right solution for you.
Send us the part number, quantity and delivery destination. Our team will help confirm availability and lead time.
-
Whatsapp: +86 18030235313
Send us a message. -
sales13@apterpower.com
Complete our online form. -
+86 18030235313
Speak to our team in your native language.