DTP40 is a DIN rail mounted PID temperature/process controller produced by IMOPC. It has the following features: multiple input selectable, one alarm standard, PID controller or transmitter modes, PID with auto-tune, PD or on/off modes, RS485 communication option (IMO/Modbus), heater burnout alarm option, compact size - 22.5mm wide, conforms to UL/CSA & CE standards.
The DTP40 controller provides dual 4‑digit displays (red and green) and supports a wide range of input types, including thermocouples, RTDs, DC current and DC voltage. It offers selectable control actions such as PID with auto‑tuning, PI, PD, P and ON/OFF, plus extensive alarm functions and sensor correction.
The unit is designed for DIN‑rail mounting, operates from 85‑264 VAC (or 20‑28 VDC/AC), and includes optional features like heater burnout alarm and RS‑485 serial communication using IMO or Modbus protocols. Up to 31 units can be linked on a single communication port.
| Display character size | 7.5 × 4.1 mm (Hx W) |
|---|---|
| Thermocouple accuracy | ±0.2 % of span +1 digit or ±2 °C (4 °F) |
| RTD accuracy | ±0.1 % of span +1 digit or ±1 °C (2 °F) |
| Relay output rating | 3 A @ 250 V AC resistive, 1 A inductive |
| Supply voltage range | 85‑264 VAC 50/60 Hz (100‑240 VAC +10%‑15%) |
| Power consumption | ≈ 6 VA |
| Dimensions (W × H × D) | 22.5 mm × 75 mm × 100 mm |
| Weight | ≈ 150 g |
| Ambient operating temperature | 0 °C to 50 °C |
| Communication protocol | IMO standard or Modbus (RTU/ASCII) |
| Maximum units per RS‑485 port | 31 |
It supports the IMO standard protocol or Modbus, selectable between RTU and ASCII modes.
Up to 31 units can be connected to one communication port.
The controller consumes approximately 6 VA.
It operates from 85 V to 264 V AC at 50/60 Hz (or 100‑240 V AC with +10%‑15% tolerance).