Partlow MIC 1400 - Section 4 - Control Capability; Control Capability; Control Responses

MIC 1400 Manual
Edition 134
Control Capability 4.1
A variety of user programmable control features and capabilities are avail-
able including:
• Auto Tune • Single On-Off Control
• Alarm Functions • Single Time Proportioning Control
• Auto/Manual Switching • Single Current Proportioning
• Process Retransmission • Dual On-Off Control
• Setpoint Retransmission • Dual Time Proportioning
• Setpoint Ramp Rate • Dual Current Proportioning
• Proportioning (Time or Current)/
On-Off Control
The capabilities available in a specific unit are dependent upon the hard-
ware options specified when the instrument is ordered. Refer to Appendix
F for the decoding of the instrument model number. Current proportioning
control cannot be implemented if a current output was not ordered. The
available output types and quantity of each are as follows:
Type of Output Quantity Available
• SPDT mechanical relay output Up to three
• SSR Driver Up to three
• mADC current output Up to two
Control Responses 4.2
Each instrument may be configured to provide 3 mode proportional control.
Proportional control is provided with Proportional Band, Integration, and
Derivative responses. The PID parameters are defined as follows:
Out 1 Out2
P (Proportional) Proportional Band Pb1 Pb2
I (Integration) Automatic Reset ArSt ArSt
D (Derivative) Rate rAtE rAtE
Manual Reset is provided for use in lieu of, or in conjunction with automatic
reset. A cycle time adjustment parameter is provided for use with each
time proportioning control output.