RMT Ltd. TEC Controller DX5100 Technical Manual
Version 3.36 / 2014 Page 5 / 56
1. INTRODUCTION
1.1. Objective
Thermoelectric Controller DX5100 (further the Controller)
represents a precision-programmed device of management of
thermoelectric coolers (TECs, the Peltier modules).
In the device a bi-directional (heating and cooling) PID
regulation is realized.
Besides the PID regulation some additional modes of operation
are realized in the Controller: the DC voltage mode, T-regulation
and programming of an object temperature behavior with time.
The device allows maintaining a given temperature of a
thermoelectric (TE) cooler with high accuracy or programming
heating and cooling in time.
The function of diagnostics of an object of regulation - a TE cooler (TEC) is realized in the device. The
diagnostics includes the measurement of the TEC resistance at alternating current, of TE figure-of-merit and
of time constant. The function of the auto-tuning of the PID parameters is also implemented.
The device is based on a modular principle. By this principle the Controller is divided functionally and
physically into the control board and the Power Board in two variants: single-channel and two-channel, as
well as peripheral and additional modules - the indication board and the interface board.
The modular concept allows assembling the offered modules of the Controller configuration from one-
and two-channel into a network design of many channels (32) of regulation joint by the control protocol
RS485.
Every channel has an independent algorithm of work.
1.2. Features
-Bi-directional temperature regulation (heating and cooling) of a TEC with high accuracy
-Work with RTD sensor and thermistors of both NTC and PTC types
-One or two TECs controlled by one Controlling Board
-Power channels of two versions: high-power 4Aх8Vand low-power 3Aх5V
-TEC operation current and voltage range as ±4A и ±8V per channel.
-PID temperature regulation mode
-Constant voltage operation mode
-T-Regulation (relay) mode
-Mode of temperature programming in time
-Diagnostics of TEC performance by the Z-metering approach
-PID auto-tuning function
-Independent work without computer, based on preset and programmed start.
-Communication interfaces RS232 and RS485
-Network of up to 32 Channels is available jointed by RS485 bus
-Software for RS232 and RS485 protocols
-Protocol WAKE for user software programming (library provided).
