The Fisher ROC306 and ROC312.
Small in size. Big in performance.

Power for the Toughest Applications. The Fisher Type ROC306 and Type ROC312 Remote Operations Controllers (ROCs) are powerful microprocessor-based remote measurement and control devices. They are ideal for low to medium point-count applications requiring sophisticated measurement and control capability. They incorporate many outstanding features that make them easy to use, easy to customize to the application, and cost-effective for current and future needs.

Easy to Use. The ROC306/ROC312 feature versatile firmware that makes complex calculations, like those for gas flow measurement, simple to implement. Both AGA orifice and turbine metering calculations are pre-programmed. Likewise, sophisticated PID loop control and logic sequencing control schemes can be implemented without programming.

The units can be configured and operated on-site from a laptop computer, or remotely using popular host software from suppliers such as Intellution^®, US Data^®, and Wonderware^®.

For ease of software upgrades, the operating system and applications firmware reside in a new FlashPAC memory module that can be re-programmed on-site from a laptop computer.

Easy to Customize. The ROC306/ROC312 offer integrators a choice of native ROC, MODBUS, or custom communication protocols for seamless integration into new or existing automation systems. Polled, report-by-exception, peer-to-peer, and master-slave communication strategies can be implemented.

For specialized applications, the units can implement user-developed C language programs.

Modular and Expandable. Modular design lets the ROC306/ROC312 adapt to your changing needs. Six I/O points are built-in to each unit, and the ROC312 can accommodate six additional I/O points using plug-in single-point modules. Both units can interface to HART^® devices using optional HART interface cards. A HART interface module is also available for the ROC312.

In addition to a standard operator interface port, a plug-in communication card extends your communication options to a host, other ROCs, or to specialized equipment. EIA-232, EIA-422/485, radio modem, leased-line modem, or dial-up modem options are available.

Proven Technology. Low power consumption and a wide operating temperature range make the ROC306/ROC312 ideal for solar-powered installations. Built-in self diagnostics and a watchdog timer keep you informed of each unit's operating status and help protect your application.

Ruggedness is a requirement for field equipment and these units meet the challenge with their heavy-gauge steel enclosures, MIL-SPEC circuit boards, and gold-plated connectors. Surge protection is provided on both built-in and modular I/O, and on communication cards as well.

Exceptional Value. The ROC306/ROC312 offer you exceptional value in terms of high return on investment, reduced product obsolescence, and flexibility to meet future needs. Contact your Fisher Representative for more information.

Specification Summary.

Input/Output

ROC306/ROC312: Built-in I/O points of the following type: 3 analog inputs, 2 discrete/ pulse inputs, 2 discrete outputs. Optional HART^® interface for analog inputs.
ROC312 Only: 1 to 6 I/O modules can be accommodated, mixed or matched by these types: discrete input and output; analog input and output; pulse input; RTD input; relay output; HART^® interface.

Communications

Ports: One EIA-232D port for the operator interface is standard. One additional port is available using a plug-in card of the following types: EIA-232, EIA-422/485, radio modem, leased-line modem, dial-up modem.
Protocols: ROC and Modbus are supported. Custom protocols are available.

Applications

AGA gas measurement for five meter runs
PID control with override for 16 loops
Logic/sequencing control using Function Sequence Tables (FSTs)
User programmable in C language

Compliance

AGA-3 and AGA-8 (version 1992); AGA-3 and AGA-8 or NX-19 (version 1985); AGA-5; AGA-7.

Approvals

Approved by CSA for hazardous locations, Class 1, Division 2, Groups A, B, C, and D.
Approved by Industry Canada for custody transfer (Canadian version).

Dimensions

8.88 inches high by 8 inches wide by 3.5 inches deep (225 mm by 203 mm by 89 mm).

Operating Conditions

Input Power: 8 to 30 volts dc. 1 watt typical power consumption excluding I/O modules and communication cards.
Operating Temperature: -40 to 167 degrees F (-40 to 75 degrees C).

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ROC306/312 Document Downloads in PDF format (brochure, spec sheets, manuals).