4.14 URTDII Module Interface
Principle – General Use
The optional Universal Resistance-based Temperature Detector II (URTDII) Module
provides temperature data to the protective device up to 12 RTDs embedded in the
motor, generator, transformer, or cable connector and driven equipment (see Eaton I.L.
IL02602013E). The temperature data will be shown as measured values and statistics in
the Operating Data menu. In addition, each channel will be monitored. The measured
data provided by the URTDII Module can also be used for temperature protection (please
refer to the Temperature Protection section).
The URTDII conveys multiplexed temperature data back to the relay via a single optical
ber. The URTDII may be mounted remotely from the protective device. The ber optic
connector is located on the X102 terminal of the protective device.
Consider the benet of mounting the URTDII module away from the protective device and
as close to the protected equipment as possible. The big bundle of RTD wires to the
protected equipment becomes much shorter. The URTDII may be placed up to 400 ft
(121.9 m) from the protective device with the optical ber connection. Note that the
URTDII will require a power supply connection at its remote location.
Connect a suitable source to the power terminals J10A-1 and J10A-2 on the URTDII
module. Connect any of the Shield terminals to a non-current-carrying safety ground. It is
recommended to have a ground connection on both sides of the unit.
Style Power Supply
URTDII-01 48 ‒ 240 VAC
48 ‒ 250 VDC
URTDII-02 24 ‒ 48 VDC
185www.eaton.comEMR-3MP0
4 Protective Elements
4.14 URTDII Module Interface
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