RS1500 3-Point PID Controller
RS1500 3-Point PID Controller
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RS1500 3-Point PID Controller
SKU: RS1500
Elotech RS1500 controllers are compact, cost-effective temperature control units designed for temperature management systems in industrial applications. Produced by the German manufacturer Elotech Industrieelektronik GmbH, they provide reliable regulation for heating and cooling processes, serving as a practical and economical alternative to more complex PLC-based systems.
These controllers combine full PID functionality with versatile control features in a straightforward package. Key capabilities include 3-point control, adjustable heating and cooling with hysteresis, and self-optimising routines that automatically tune parameters to suit the system. They support PT100 sensor inputs and offer multiple digital inputs and outputs for tasks such as pump control, alarms, level monitoring, and valve operation.
With a clear 7-segment dual-row display, simple four-key operation, and a compact 96 x 48 mm front panel, the RS1500 is easy to install and use. It is particularly well-suited for smaller temperature control units, machine integration, and customised solutions where reliability and value for money are essential.
Overall, the RS1500 delivers dependable performance for a wide range of industrial temperature control needs while keeping costs and complexity low.
Performance features
Economical entry level variants
Full-value regulation and control
Basic functions:
3-point controller, PID controller, heating and cooling switching hysteresis
Control functions with inputs and outputs or for temperature control solutions
Front installation, optional: Installation from the rear
Operation:
7-segment display, 2 rows
4 keys
5 LEDs for alarms and further function displays
Control:
PID control behaviour. The control behaviour can be adjusted via the feedback parameters.
Setting the rate time, reset time (P,I,PI,PD,PID)
Setpoint limit
Self-optimising for adaptation to the controlled system
Self-optimising at start up and up to the setpoint.
The algorithm determines the characteristics of the system in a closed control loop and calculates the control parameters (Xp, Tv, Tn) over a wide range and the switching cycle time (C = 0.3 x Tv) of a PD/I controller.
After calculation of the feedback parameters, the controller returns the actual value to the current setpoint.
Self-optimising stopped: by alarm warning and switching off the controller
Output ratio limitation
The output ratio is output to the digital outputs in the form of a PWM signal.
The total duration of an On/Off cycle is determined via the switching cycle time parameter.
The value parameters are set separately for heating and cooling (P: switching cycle time heating or cooling).
Output ratio limitation is only needed in the event of fixed over-dimensioned power supply to the controlled system. Output ratio limitation is usually set to 100 %. For heating and cooling, output ratio limitation can be programmed to between 0 % and 100 %.
Control parameters for heating and cooling are separately adjustable. There can be no overlap of heating and cooling.
In "Ready for operation" and "Alarm" operating status the controller outputs are set to zero.
Settings ranges and control precision:
Feedback: Xp: 0…100% Tv: 0…200sec Tn: 0…999sec
Switching cycle time: 1…240sec
Output ratio limitation: 0…100%
Setpoint limit: -40…400°C
Control precision in steady state (without sensors): ± 0.5 K
Resolution in the steady control state (without sensors): ± 0.1 K
Control functions (example for temperature control solution):
Heating, cooling, alarm, pump (on/off/empty)
Watch-dog: Permanent monitoring of correct software process
Temperature warning
All data are storage is power failure-proof.
Filling/float switch
Cooling and switch-off
Fill time monitoring
Restart lockout
Do not heat dead zone
Switching cycle times
System lock
Tool emptying
Leak stop (direction of rotation of pump - phase switch - is carried out via relay).
Display of error messages
Inputs and outputs:
Controller outputs: Bistable logic output: See control unit technical data
Sensor input: PT-100, 2-wire, break and short-circuit proof
3x digital input, 24 V for level switch, motor contactor, …
8x digital output (logic), 24 V, max. 0.6 A (max. 115W=8x24x0.6, e.g., for pump contactor, solid state relay, solenoid valves, alarm (relay)
PT 100 (DIN): Measurement range: 0…200°C resolution 0.1°C
TTY, optionally further interfaces (RS232, RS485)
Power supply: 24 VDC
Technical data:
Format: Front dimensions: Standard formats 96 x 48 mm, optional: 48 x 96 mm (W x H)
Installation depth: 90 mm
Protection class: IP 00 / front: min. IP54
Sensor current: max. 1 mA
1 x 2-wire circuit
Sensor breakage and short circuit monitoring are present.
Sensor current: < 1 mA
Calibration accuracy: < 0.25 % in temperature range 0...200°C
Linearity and display errors: < 0.2 % +/- 1digit
Ambient temperature influence on the measuring span: < 0.01 % / K
Digital inputs: Designed for connection of external, zero-voltage contacts.
Switching voltage: Approx. 24 V DC, max. 1 mA
Controller output "Heating": Voltage, bistable, 0/24 V DC, min. 10 mA, short circuit proof
Solenoid valve controller output: Voltage, bistable, 0/24 V DC, min. 0.6 A
Outputs, relay: Relay switchover, max. 250 V AC, max. 2.5 A at cos-phi = 1
Interfaces: TTY(0/20mA) for protocols: Arburg, Engel, Dr. Boy, Krauss Maffei
Data backup: EAROM, semiconductor memory
Electrical connections: Spring clamps, protection class IP 20 (DIN 40050), insulation group C
Admissible applications: Working temperature range: 0...50°C / 32...122°F
Storage temperature range: -30...70°C / -22...158°F
Climatic application class: KWF DIN 40040;
Corresponds to 75 % rel. humidity as annual average, no condensation
WHY CLARIAN UK?
As the exclusive UK partner of ELOTECH Industrieelektronik, a trusted global manufacturer, Clarian UK blends expertise with innovative design to deliver high-quality, cost-competitive heating solutions. Our dedication to rapid delivery and custom engineering guarantees your project’s success.
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