Honeywell DC1020 DIGITAL CONTROLLERS

Honeywell DC1020 DIGITAL CONTROLLERS

Overview

The Honeywell DC1020 DIGITAL CONTROLLERS represent a cornerstone of the DC1000 series, offering industrial-grade precision for temperature and process control applications. Designed as a 1/8 DIN panel-mount controller, the Honeywell DC1020 combines microprocessor-based intelligence with robust construction, making it suitable for demanding environments ranging from plastic processing to semiconductor manufacturing. The DC1000 series includes DC1010 (48×48mm), DC1020 (48×96mm), DC1030 (72×72mm), and DC1040 (96×96mm) models, with the DC1020 providing an ideal balance between compact footprint and comprehensive functionality-11-.

The DC1020 DIGITAL CONTROLLER is equipped with dual 4-digit, 7-segment LED displays—7mm for process value (PV) and 7mm for setpoint (SP)—enabling clear real-time monitoring of control parameters-5. An optional 10-LED bargraph provides additional visual feedback for output status, alarm conditions, and operational modes

Key Technical Specifications

General Specifications

Power Supply

The Honeywell DC1020 operates on a universal power supply accommodating global installations:

AC Supply: 85–265 V AC, 50/60 Hz

DC Supply: 15–50 V DC (optional)

Power Consumption: 8 VA max at 110 V; 12 VA at 220 V

Dielectric Strength: 2500 V AC for 1 minute

Input Specifications

The DC1020 supports universal input configurations, accepting a wide range of sensor and signal types:

Input Channels: 1–2 analog inputs

Thermocouple Types: K, J, R, S, B, E, N, T, W, PL II, L (12 types total)

RTD Types: Pt100, JPT100, JPT50 (3 types)

Linear Inputs (mV): -10–10 mV, 0–10 mV, 0–20 mV, 0–50 mV, 10–50 mV

Linear Inputs (V): 0–1 V, 0–5 V, 0–10 V, 1–5 V, 2–10 V

Linear Inputs (mA): 0–20 mA, 4–20 mA

Input Resolution: 18-bit per channel

Input Sampling Time: 100 ms (minimum 50 ms)

Input Impedance: Thermocouple/mV ≥ 1 MΩ; RTD 0.2 mA excitation; mA ≤ 100 Ω; V ≥ 100 kΩ

Display and Indication

Control Outputs

The DC1020 DIGITAL CONTROLLER offers multiple output configuration options:

Output 1 Options:

None

Relay (SPDT, 3 A at 240 V AC)

Voltage pulse (24 V DC / 20 mA)

4–20 mA linear

1-phase SSR drive

3-phase SSR drive

Motor position control

1-phase SCR (zero-cross or phase-angle)

3-phase SCR

0–5 V, 0–10 V, 1–5 V, 2–10 V

Output 2 Options:

None

Relay (SPST, 3 A at 240 V AC)

Voltage pulse (24 V DC / 20 mA)

4–20 mA

0–5 V, 0–10 V, 1–5 V, 2–10 V

Control Cycle Time: 0–150 seconds (configurable: 0 for 4–20 mA linear, 1 for SSR, >10 for relay outputs)-5-57

Alarm Specifications

The Honeywell DC1020 can be equipped with up to 3 alarm outputs featuring 17 configurable alarm modes:

Deviation alarms (high/low)

Band alarms

Absolute value alarms (high/low)

Rate-of-change alarms

Sensor failure detection

End-of-segment alarms (program mode)

Timer alarms

Flicker and continuous alarms-

Communication Protocols

For integration into industrial networks, the DC1020 supports serial communication:

Protocols: Modbus RTU, Modbus ASCII

Interfaces: RS-232 or RS-485

Baud Rates: 2400, 4800, 9600, 19200, 38400 bps

Data Format: 8 data bits, even/odd parity selectable, 1 or 2 stop bits

Network Capacity: Up to 30 DC1000 controllers per host-

Control Algorithms

The Honeywell DC1020 DIGITAL CONTROLLERS incorporate a comprehensive suite of control strategies:

PID Control: Proportional band (0–200%), integral time (0–3600 sec), derivative time (0–900 sec)

ON/OFF Control: Simple two-position control (P=0)

Heat/Cool Control: Independent PID sets for heating and cooling applications

Motor Position Control: Servo motor valve positioning without slidewire feedback

Phase-Angle Control: Single-phase and three-phase SCR firing with zero-crossover option

Cascade Control: Available on select configurations

Auto-Tuning (AT): Automatic PID parameter calculation based on process dynamics

Auto-Tuning Feature

When AT is set to ‘YES’, the controller initiates an automatic tuning sequence. The PID parameters are automatically calculated and stored in EEPROM upon completion. The ATVL (auto-tuning offset) parameter prevents overshoot during tuning by offsetting the setpoint-39-64.

Setpoint Programming (Optional)

The DC1020 with program option (P in model number) provides:

Programs: 2 independent programs

Segments: 8 segments per program (total 18 patterns / 144 segments maximum)

Program Linking: Link two 8-segment programs into a single 16-segment profile

Segment Functions: Ramp (ramp rate in °C/min or °F/min), Soak (hold time), Step

Program Control: Repeat, link, and end-of-segment alarm output

The Ramp & Soak programming is configured through Set Level parameters (SET 2.1=1, SET 4.1=1, ALD 3=9)-12.

Environmental and Mechanical Specifications

Electrical Isolation

Insulation Resistance: >10 MΩ at 500 V DC between input/output and case

Withstand Voltage: 1000 V AC, 50/60 Hz for 1 min (input to ground); 1500 V AC for 1 min (output to ground)-1

Model Number Interpretation

The Honeywell DC1020 model code follows a structured format that defines the controller configuration:

DC1020 □ □ – □□□ – □□□ – □

Example Configurations

DC1020CL-301000-E: 1/8 DIN, no program, 4–20 mA output, linear input, no second output, 1 alarm, no communication, English display

DC1020CR-101000-E: 1/8 DIN, no program, relay output, RTD input, no second output, 1 alarm, no communication, English display-30

DC1020CT-302000-E: 1/8 DIN, no program, 4–20 mA output, thermocouple input, no second output, 2 alarms, no communication, English display

Input/Output Mapping

Auxiliary Output (Retransmission)

Output Signals: SP, PV, MV

Signal Types: 4–20 mA, 0–20 mA, 0–5 V, 0–10 V, 1–5 V, 2–10 V

Accuracy: 0.1% FS of span

Remote Setpoint (Second Input)

Input Types: 4–20 mA, 0–20 mA, 0–5 V, 0–10 V, 1–5 V, 2–10 V

Sampling Time: 50 ms

Configuration: Set INP2 to 1 or 2, calibrate using ANL2/ANH2, enable SET 0.3=1

Installation Guidelines

Pre-installation Checklist

Before installing the Honeywell DC1020 DIGITAL CONTROLLER, verify the following:

Confirm model number matches application requirements (input type, range, output configuration)

Ensure panel cut-out dimensions: 45.5 × 91 mm

Verify ambient temperature within –20°C to +65°C range

Confirm humidity conditions (50–85% RH, non-condensing)

Inspect shipping carton for damage

Wiring Precautions

Use shielded cables for thermocouple and RTD inputs

Separate input/output wiring from power lines to minimize noise

Ground the controller according to local electrical codes

Do not exceed maximum voltage ratings for relay contacts (3 A at 240 V AC)

Operating Modes

Auto/Manual Operation

The DC1020 supports switchable Auto/Manual operation (standard on DC1020 models). Manual mode allows direct output percentage control for commissioning and troubleshooting. The front-panel MAN indicator illuminates when manual mode is active-5-39.

Configuration Levels

Level 1 (Operator): PV display, SP adjustment, output percentage, alarm setpoints

Level 2 (Configuration): PID parameters, input type selection, output configuration

Level 3 (Program Level): Ramp/Soak programming (program models only)

Level 4 (Factory): Calibration parameters (secured by 4-digit security code)

Security Lock

A 4-digit security code prevents unauthorized parameter changes. Setting LCK=0000 unlocks full access; LCK=1111 enables parameter viewing without modification-64.

Application Industries

The Honeywell DC1020 DIGITAL CONTROLLERS are deployed across diverse industrial sectors:

Plastic Processing: Extruder barrel temperature control, injection molding

Packaging Machinery: Heat seal temperature regulation, shrink tunnel control

Semiconductor Manufacturing: Wafer processing temperature control, test equipment

Industrial Drying: Oven temperature management, drying tunnel control

Painting & Coating: Paint curing oven temperature, powder coating process

Food Processing: Cooking and sterilization temperature control

HVAC Systems: Chiller and boiler temperature regulation

Pharmaceutical Manufacturing: Process temperature control, validation compliance

Furnace & Heat Treating: Industrial furnace temperature profiling

Environmental Chambers: Humidity and temperature setpoint programming-28-34

Compatible Accessories

Compliance and Certifications

CE Mark: Conforms to EMC Directive and Low Voltage Directive

UL Recognition: File E232177 (pending confirmation by end user)

RoHS Compliant: Restriction of Hazardous Substances

Error Indications

*Errors marked with asterisk indicate hardware failure requiring factory repair-39-64.

Ordering Information

To specify a Honeywell DC1020 DIGITAL CONTROLLER, construct the model number using the format:

DC1020 [Program] [Output1] [Input] [Output2] [Alarm] [Aux] [Input2] [Language] [Communication]

Complete Model Number Examples

The Honywell DC1020 is available through authorized Honeywell distribution channels worldwide. For pricing, availability, and technical support, contact your local Honeywell process solutions representative or visit the official Honeywell website for the most current product documentation and firmware updates.