Key Product Data
Model: CM30/2/D/M/S/0/E/0/STD
Order Code: CM302DMS0E0STD
Product Type: Universal Process Controller
Control Function: Dual Loop
I/O Build: 2 analog inputs, 2 analog outputs, 2 digital I/O, 4 relays
Communication: RS-485 MODBUS RTU
Power Supply: 100–240 V AC ±10%
Frequency: 50/60 Hz
Power Consumption: 10 W max.
Display: 3.5 in color 1/4 VGA TFT LCD
Analog Inputs: 2 universal process inputs
Analog Outputs: 2
Relays: 4 total
Digital I/O: 6 total
Transmitter Power Supply: 24 V DC, 45 mA max. per PSU
MODBUS Baud Rate: Up to 115 kBaud
Front Protection: IP66 / NEMA 4X
Case Protection: IP20
Operating Temperature: 0–55°C
Operating Humidity: 5–95% RH, non-condensing
Storage Temperature: -20–70°C
Dimensions: 97 × 97 × 141 mm
Panel Cutout: 92 × 92 mm
Weight: Approx. 0.5 kg
Safety Approval: EN61010-1, cULus
EMC: IEC 61326, industrial environment
Product Introduction
CM302DMS0E0STD is a configured ABB ControlMaster CM30 universal process controller in the 1/4 DIN format. The configuration combines the CM30's dual-loop functionality with an expanded I/O build, RS-485 MODBUS communication, 100–240 V AC power supply, English-language operation and standard CE approval. ABB's ordering information identifies this configuration through the code structure CM30/2/D/M/S/0/E/0/STD.
The CM30 platform is designed as a universal PID process controller with a full-color TFT display, configurable hardware and software functions, and control strategies that include cascade, feed-forward, ratio, predictive and adaptive control. The platform also provides math, logic and totalization functions for more complex process-control requirements.
Configuration Breakdown
The exact ordering code provides useful information when identifying this particular CM30 version.
- 2 designates the I/O build with 2 analog inputs, 2 analog outputs, 2 digital I/O and 4 relays.
- D specifies the Dual Loop functionality level.
- M identifies RS-485 MODBUS communication.
- S indicates standard CE approval.
- 0 specifies the 100–240 V AC power-supply version.
- E identifies English-language operation.
- 0 indicates no special front-panel feature.
- STD denotes standard configuration.
This makes the complete ordering code particularly important for replacement identification because different CM30 configurations can share the same basic controller family while having different I/O, functionality, communications and power-supply arrangements.
I/O Configuration
The CM302DMS0E0STD configuration uses the CM30's I/O build 2. ABB defines this build as two analog inputs, two analog outputs, two digital I/O channels and four relay outputs.
The universal analog inputs can accept voltage, current, resistance, 3-wire RTD, thermocouple, volt-free digital and 24 V digital signals. Frequency and pulse inputs are also supported through the applicable input configuration.
The relay section provides four outputs, with the standard relay using changeover contacts and the optional contacts selectable as normally open or normally closed by jumper. The relay contact rating is 5 A at 240 V.
The digital I/O architecture supports user-programmable input or output operation. Digital inputs can use volt-free or 24 V DC signals, while the outputs use open-collector switching up to 30 V and 100 mA.
Dual-Loop Control
The D functionality code is significant for this particular unit. ABB defines the Dual Loop level with local/local, remote/local and remote/remote dual-loop templates. This allows two process loops to be handled within the same CM30 controller configuration.
The CM30 platform also supports advanced strategies including cascade, feed-forward, ratio, predictive and adaptive control. Autotune, gain scheduling, split-output control and other control functions are available according to the selected functionality level.
RS-485 MODBUS Communication
The M position in the ordering code specifies the RS-485 MODBUS communication option. ABB describes RS-485 MODBUS as a means of communicating process values and controller status in real time through an RS-485 connection.
The MODBUS RTU interface supports baud rates up to 115 kBaud and provides galvanic isolation from the remainder of the controller circuitry, specified at 500 V DC for one minute.
The CM30 family also has an IrDA service port for firmware upgrades and configuration upload/download. Ethernet is a separate communication option and is not part of the M configuration specified for CM302DMS0E0STD.
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Display and Operator Interface
CM30 uses a full-color 1/4 VGA TFT LCD with an integrated backlight. The display measures 3.5 inches and provides process information, alarm messages, diagnostics and configurable trend information.
The operator interface uses six tactile membrane keys. The trend display can record two process variables, with configurable sampling intervals from one second to five minutes and up to 272 samples displayed on screen.
Password protection is also provided, with basic and advanced user-assigned password levels available for configuration access.
Power Supply and Physical Format
CM302DMS0E0STD uses the CM30 AC power-supply version specified for 100–240 V AC ±10%, corresponding to a permissible input range of 90–264 V AC at 50/60 Hz. Maximum power consumption is 10 W. ABB also lists a 10–36 V DC supply as an optional alternative within the CM30 family, but that is not the power-supply code selected by this particular model.
The controller occupies a 1/4 DIN panel format. Overall dimensions are 97 × 97 × 141 mm, with a 92 × 92 mm panel cutout and approximately 121 mm of depth behind the panel. The unpacked unit weighs approximately 0.5 kg.
Environmental Protection
The CM30 front face is rated IP66 and NEMA 4X, while the remainder of the enclosure is IP20. ABB specifies an operating temperature range of 0 to 55°C and an operating humidity range of 5–95% RH without condensation.
Storage temperature is specified from -20 to +70°C. The controller uses a glass-filled polycarbonate enclosure and conforms to EN 60068-2-6 for vibration.
Control and Process Functions
The ControlMaster CM30 is designed to handle more than basic PID regulation. Depending on the selected functionality level, its functions include:
- PID and on/off or time-proportioning control
- Autotune
- Gain scheduling
- Cascade control
- Feed-forward control
- Ratio control
- Predictive control
- Adaptive control
- Split-output control
- Math functions
- Logic functions
- Custom linearizers
- Delay timers
- Real-time alarms
- Totalization
- Historical trending
ABB specifies eight math blocks, eight logic equations, two custom linearizers with 20 breakpoints, and two totalizers within the CM30 platform.
Product Identification
The complete identification for this controller is:
CM302DMS0E0STD - compact ordering-code form used for the product listing.
CM30/2/D/M/S/0/E/0/STD - ABB CM30 ordering format showing the individual configuration positions.
The configuration corresponds to the CM30 I/O build 2, Dual Loop functionality, RS-485 MODBUS, standard CE approval, 100–240 V AC supply, English language, no special feature and standard configuration.
When replacing an installed CM30, the complete configuration code should be matched rather than identifying the controller only as a generic CM30, since I/O capacity, functionality, communication option and power supply vary across the product family.
Application Context
The CM30 platform is intended for panel-mounted process control applications involving variables such as temperature, pressure, flow and level. ABB documents also describe applications involving pH dosing, batch processes, food and beverage processing, cold-storage monitoring and other industrial process-control tasks.
For CM302DMS0E0STD specifically, the combination of Dual Loop functionality, expanded I/O and RS-485 MODBUS makes the configuration relevant to installations requiring two-loop process regulation and serial integration within the same controller.
Alternative Names
CM302DMS0E0STD
CM30/2/D/M/S/0/E/0/STD
CM30/2/D/M/S/0/E/0
CM30/2/D/M/S
CM30 2 D M S 0 E 0 STD
CM30 Dual Loop Controller
CM30 Dual Loop Process Controller
CM30 Universal Process Controller
CM30 Universal PID Controller
CM30 1/4 DIN Controller
CM30 Panel Mount Controller
CM30 Process Controller
CM30 ControlMaster Controller
ControlMaster CM30
ControlMaster Dual Loop
ControlMaster Universal Controller
CM30 RS-485 MODBUS Controller
CM30 MODBUS Process Controller
CM30 100–240 V AC Controller
CM30 I/O Build 2 Controller
Frequently Asked Questions
What is CM302DMS0E0STD?
CM302DMS0E0STD is a specific ABB ControlMaster CM30 configuration with I/O build 2, Dual Loop functionality, RS-485 MODBUS communication, standard CE approval, 100–240 V AC power and English-language configuration.
What does the D in CM302DMS0E0STD mean?
The D identifies the Dual Loop functionality level in the ABB CM30 ordering code.
What does the M indicate?
The M specifies the RS-485 MODBUS communication option.
How many analog inputs does this CM30 configuration have?
The I/O build 2 configuration provides two analog inputs. The CM30 universal inputs support signals including voltage, current, resistance, RTD and thermocouple inputs.
How many relay outputs are included?
I/O build 2 provides four relay outputs. ABB specifies a 5 A, 240 V contact rating for the relay section.
Does CM302DMS0E0STD support Ethernet?
No. The M communication code selects RS-485 MODBUS. Ethernet is a separate CM30 communication option represented by the E communication code, so it should not be confused with the E used later in this model code for English language.
What power supply does this model use?
This configuration uses 100–240 V AC ±10%, with an operating range of 90–264 V AC at 50/60 Hz.
What are the dimensions of the CM30?
The CM30 measures approximately 97 × 97 × 141 mm. The required panel cutout is 92 × 92 mm, with approximately 121 mm of depth behind the panel.
What is the display size?
The CM30 uses a 3.5-inch, 1/4 VGA color TFT LCD with an integrated backlight.
Is CM302DMS0E0STD suitable for two-loop process control?
Yes. The D configuration provides the CM30's Dual Loop functionality, including local/local, remote/local and remote/remote dual-loop templates.
Procurement Reference
Model: CM302DMS0E0STD
ABB Configuration: CM30/2/D/M/S/0/E/0/STD
Product Family: ControlMaster CM30
Product Type: Universal Process Controller
Form Factor: 1/4 DIN
Functionality: Dual Loop
I/O Build: 2
Communication: RS-485 MODBUS
Power Supply: 100–240 V AC ±10%
Display: 3.5-inch Color TFT
Analog Inputs: 2
Analog Outputs: 2
Digital I/O: 2
Relay Outputs: 4
Front Protection: IP66 / NEMA 4X
Weight: Approx. 0.5 kg
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