MC3 3000 Loss-In-Weight Controller

The MC³ 3000 Controller is designed to deliver material into a downstream process at a designed feedrate.

Theory of OperationAn analog signal is used by the MC³ Controller to control the speed of a feeding device. The analog signal is varied by the controller to maintain a set feedrate. A Load Cell signal is monitored by the controller and is used as feedback for maintaining feedrate and totalizing the material fed from the feeder. The Load Cell signal is also used to determine when the feeder hopper requires material. An output from the MC³ Controller can control a refill device or can be used to signal another intelligent device that a refill is required. When the weight of material in the hopper reaches the correct level, the controller will remove the requirement for refill. This automatic function can be disabled for manual refill.

Process Values displayed include:

Feedrate
Net Weight
Feedrate Setpoint
Master Total
Sub-Total

Status Indicators Include:

Controller State
Run Permission
Stability
Feedrate State
Date
Time

Operator settable parameters include but are not limited to:

Feedrate Setpoint
Hopper (Refill) Parameters
Feedrate Limits
Setpoint Mode

Communication Interfaces:

Merrick Serial Communications Protocol
Modbus ASCII, Modbus +
DeviceNET, ControlNET
DF1, Data Highway +
Profibus
EtherNet

Standard Inputs and Outputs include:

Seven (7) Digital Outputs
Four (4) Digital Inputs
Two (2) Analog Outputs
One (10) Analog Input
DC Pulse Output for Totalizer

Maximum Inputs and Outputs available:

Fourteen (14) Digital Outputs
Eight (8) Digital Inputs
Four (4) Analog Outputs
One (1) Analog Inputs

Logical Digital Inputs and Outputs
Each physical Digital Input and Digital Output can be assigned (mapped to) a Logical I/O Function. In addition, the normal state of the input or output can be assigned such as normally open/closed, inverted or forced on/off.

Commonly used Logical Digital Inputs included but are not limited to: