SIEMENS SIPART DR21 PROCESS CONTROLLER 6DR2104-4 Ready For Ship, China SIEMENS SIPART DR21 PROCESS CONTROLLER 6DR2104-4 Ready For Ship Manufacturers, Suppliers, Factory

Overview

Brand Name:	SIEMENS
Model Number:	6DR2104-4
Country of Origin:	GERMANY
Packaging Details:	Original new Factory Sealed
Delivery Time:	Delivery time in stock
Payment Terms:	T/T

Contact for quotation

Sales Manager:	Stella
Send an email:	[email protected]
Contact in Whatsapp:	+86 18159889985

Specifications

Parameter	Specification
Manufacturer	Siemens
Model Number	6DR2104-4
Product Series	SIPART DR21
Power Supply	24 V UC (AC or DC, polarity irrelevant)
Power Consumption	Approx. 11 W / 15 VA (with options)
Type of Protection	Front IP64; Housing IP20; Connections IP20
Installation	72 x 144 mm Panel Cut-out
Analog Inputs (AI)	2 x 0/4 to 20 mA (Standard controller). Expandable to 4 via modules (UNI, I/U, R).
Analog Output (AO)	1 x 0/4 to 20 mA (Potential-bound)
Digital Inputs (DI)	2 x 24V logic (Expandable to 4 or 7 via modules). Functions: bLb, CB, He, etc.
Digital Outputs (DO)	2 x 24V logic and 2 x Relay outputs (Interlocked). Expandable via coupling relays (6DR2804-8A/B).
Display Type	30-LED vertical bargraph (x & w), 4-digit 7-segment LED (x/w), 2-digit 7-segment LED (y).
Controller Types	Fixed setpoint, Ratio, Slave, DDC, Control unit/Process display, SPC.
Control Algorithm	PID (Interaction-free parallel structure), P, PI, PD
Output Configurations	Continuous (K-controller), Two-position (Heating/Cooling), Three-position step (S-controller internal/external feedback).
Electrical Safety	Safe disconnection between mains and field signals; Protection Class I
Weight	Approx. 1.2 kg

Description

The Siemens 6DR2104-4 is a high-performance single-loop process controller from the SIPART DR21 series, designed for demanding chemical and petrochemical applications. Operating on 24 V UC, the 6DR2104-4 combines versatile I/O expansions (UNI-module for TC/RTD) with a clear LED display. It supports continuous (K) or three-position step (S) outputs, alongside advanced features like intrinsic safety and PROFIBUS-DP coupling via SES, enabling precise closed-loop control across temperature and pressure systems.

Applications

Chemical & Petrochemical: Acid/alkali pH value control, concentration monitoring.

Thermal Processing: Furnace temperature management (Combustion controls, air/gas ratio).

Power Generation: Boiler control and generator synchronization.

General Industry: Food & beverage thermal processes, tobacco drying, and water treatment automation.

Cascade & Ratio Control: Master-slave configurations for complex process interactions.

Features

Versatile I/O Expansions: Expand to 4 analog inputs (TC, RTD, mA, mV) and 7 binary inputs via modular plug-in cards (Slot 1-4).

Dual Output Control: Switchable between continuous analog (0/4-20 mA), two-position (Heating/Cooling), and three-position step outputs (Motorized).

Intuitive HMI: 30-LED analog bargraphs for x/w, 4-digit digital display, and 2-digit y-display with adaptive LED test.

Integrated Safety: Supports parameterizable safety setpoint (SH) and watchdog monitoring for failsafe states.

Communication Ready: PROFIBUS-DP interface (Option 6DR2803-8P) plus RS 232/485 for telecontrol and PC configuration (SIMATIC PDM).

Functions

PID Control Algorithms: Configure P, PI, or PD (with derivative gain vv up to 10) ideal for flow or slow temperature systems.

Precise Ratio Control: Controlled ratio controller function for commanding process variables (vA to vE range adjustable).

Adaptation Method: Automatic calculation of optimum Kp, Tn, and Tv (PI/PID) even for critical loops with long dead times.

Limit Monitoring: 4 configurable limit values (A1-A4) with hysteresis for alarms actuating digital outputs.

Manual/Auto Tracking: Bumpless transfer between manual/automatic modes; supports x-tracking and external setpoint wE via SES.

FAQ

Q1: What input signal types can I connect to the 6DR2104-4 standard controller?
A1: The standard controller base unit accepts two 0/4 to 20 mA analog current inputs (potential-bound). With the UNI-module (6DR2800-8V) in Slot 1, you can also connect thermocouples (Type B, J, K, etc.), Pt100 RTDs (2/3/4-wire), resistance potentiometers, and mV sources.

Q2: How do I adapt the controller direction of action if my actuator closes on signal rise?
A2: Use structure switch S46. For a reversing system (rising y causes falling x), set S46 = 1 to negate Kp (switch to -Kp). Ensure S55 is set correctly to display the manipulated variable accurately if the valve direction is inverted.

Q3: Does the 6DR2104-4 support PROFIBUS DP communication for a control system?
A3: Yes. Insert the PROFIBUS-DP interface module 6DR2803-8P into Slot 4 of the controller. Configure the controller station address (0 to 125) accordingly using structure switches (S90). You can then read/write all process variables, parameters, and 32 cyclic data points from a DP master.

Q4: What happens if the 24 V power supply fails temporarily while the controller is running?
A4: The CPU performs a Power-On-Reset. Parameter setters S82 and S83 define the restart state. You can configure it to resume with the last operating mode (automatic/manual), last setpoint, and last manipulated variable (y) through the EEPROM stored architecture.

Q5: How do I calibrate the analog inputs to match a specific measuring range (e.g., 0-200°C)?
A5: Use the CAE3 parameterization mode. If using a UNI-module, set the decimal point (MP), range start (MA), and range full scale (ME). For Pt100 2-wire connections, you can offset line resistance using the Mr and Cr parameters to fine-tune the display reading (dA to dE) to match your physical unit【17†L10-L15】.

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