Chapter 2: Functional Description; Models Covered In This Manual; General Description; Typical Features And Components - ACS 601.86861.00 Operation And Instruction Manual

Chapter 2: Functional Description

2-1

Models Covered in This Manual

This manual provides operation, installation, and maintenance instructions for the M2C
Advanced controller. The M2C Advanced is available for use with several models of
temperature control units (TCUs). A separate manual describes operation, installation, and
maintenance instructions for the
TCU itself.
2-2

General Description

The M2C Advanced is a microprocessor-based process controllers designed for use with
temperature control units. The M2C Advanced monitors and maintain the temperature of the
fluid in any given process to a selected setpoint using a unique proportional integral derivative
(PID) auto-tuning program. The controller employs PID algorithms to automatically tune the
system to heat or cool the fluid as required by the process.
The M2C Advanced has a Liquid Crystal Display (LCD) that provides all operational status
and programming menus. The controllers includes self- diagnostics to check hardware
functions. All diagnostic information is displayed in the second line of the Liquid Crystal
Display.
The M2C Advanced is panel-mounted and have a membrane keypad with tactile feedback.
When properly installed with a sealing gasket, the M2C Advanced meets NEMA 4 or IP66
integrity.
2-3

Typical Features and Components

• PID Control for both heating and cooling
• 4 line x 20 character LCD Display Screen
• Setpoint, To Process, From Process, and DT displays
• System status
• Password protection
• Selectable sensor types (Type K, J, & T thermocouples; 100 ohm and 1000 ohm RTDs)
• Autovent sequence (adjustable from 1 to 10 minutes)
• Sixteen segment Ramp/Soak program
2-4

Safety Features

• Analog output for heating (SCRs) and cooling (modulating valves)
• Analog retransmission of Setpoint or To Process temperature
• Analog retransmission of flow (with optional flow meter)
• Flow sensor input, pulse or analog, with voltage excitation
• RS-232 or RS-485 Modbus communications
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