TE-RTD12
Motor RTD Monitor / Relay Device
The TE-RTD12 Relay device adds advanced RTD and differential current monitoring capability to your new or existing motor system — 12 built-in RTD inputs, 3 programmable output relays, 2 isolated analog inputs, 1 isolated analog output, 3 isolated digital inputs, and RS485 Modbus RTU communication.
| Control Voltage | 110 – 240 Vac |
| RTD Inputs | 12 (Pt100, Ni100, Ni120, Cu10) |
| CT Inputs | 3 CT inputs for differential CTs |
| Analog Inputs | 2 isolated 4-20 mA inputs |
| Analog Output | 1 isolated 4-20 mA output |
| Digital Inputs | 3 isolated |
| Output Relays | 3 programmable Form C, 5A contact rating |
| Communication | RS485 Modbus RTU (2-wire) |
| Operating Temperature | 0°C to 50°C / 32°F to 122°F |
| Humidity | 10% to 90% non-condensing |
| Approvals | UL, CUL |
| Mounting | Back panel (bracket) or DIN-Rail |
12 RTD Inputs
Supports Pt100, Ni100, Ni120 and Cu10 sensors — programmable temperatures in °C or °F.
Differential Current Monitoring
3 CT inputs for differential current feedback monitoring with adjustable alarm and trip levels.
Event Recorder
Built-in event recorder stores fault history with alarm/trip code, current/temperature, analog input and date/time stamp.
RS485 Modbus RTU
2-wire RS485 communication port for PLC, SCADA, or operator interface programming and monitoring.
TE-RTD12
Technical Specifications
Control Voltage
110 – 240 Vac
Inputs
12 RTD inputs (Pt100, Ni100, Ni120, Cu10)
3 CT inputs for differential CTs
2 isolated 4–20 mA inputs
3 isolated digital inputs*
Outputs
3 programmable Form C relays (5A pilot duty)
1 isolated 4–20 mA output**
Differential CTs
Primary 5 – 2,000A; Secondary 1A or 5A.
Alarm and Trip Levels: OFF, 5% – 90% of CT value.
Important: Differential CT feature is NOT designed to act as a UL Ground Fault or Over Current protection.
Resolution / Accuracy
Analog Inputs better than 1%
Analog Outputs better than 0.5%
Communication Port
2-Wire RS485*
Serial Protocol
MODBUS RTU
I/O Terminals
Removable terminal blocks
Keypad & Display
Two 4-digit displays: one for RTD name (St1, St2, Fb, rb…) and one for the temperature.
Indicators: 1 green OK LED, 1 yellow ALARM LED, 1 red TRIP LED, 3 Relay LEDs.
Pushbuttons: 4 arrows, Function, Enter, Reset.
Temperature Display
Selectable °C or °F
Mounting
Back panel (using mounting bracket) or DIN-Rail mount
Operating Temperature
0°C to 50°C / 32°F to 122°F
Storage Temperature
-20°C to 80°C / -4°F to 176°F
Humidity
10% to 90% (non-condensing)
Approvals
UL, CUL
Notes
* Digital Inputs share a common ground point.
** All analog I/O share a common ground point.
TE-RTD12
Software Tools
System Requirements
Windows 10 or higher
Intel Core i3 or equivalent
2 GB RAM minimum
100 MB disk space