MCT-MC
4.3
FDC MCT-MC
- 26 -
Configuring the MCT-MC
4.3.8 Event Input Alarm Message
When the event input function is set to alarm input, the Event Input Alarm Message entry allows the user or
OEM to assign the alarm message that will be shown on the alarm screen in the runtime application when the
input is activated. The alarm message can be up to 25 characters long.
4.3.9 Low/High Limit Setpoint
The low and high limit set points are used to set the minimum and maximum allowed set points that can be
entered for the loop control. These are typically set by the OEM to limit the control range to within the safe
operating range of the equipment.
NOTE:
The runtime application provides additional user low and high set point limits. These can be adjusted
to further limit the allowable set point range within the band set by the OEM low and high set point
limits.
4.3.10 Output 1 Function
The Output 1 Function is used to set the mode of operation for the primary control output of the loop control
board. The output can be set for heating or cooling on/off control, time proportioning or linear control. The
output selections are mutually exclusive, i.e., selecting one will turn off the others. Once the desired function
has been selected, press the “Done” button to set the output function for the loop control board and return to
the main Loop Configuration screen.
NOTE:
The output function must be set to match the type of output ordered on the loop control board. Relay,
triac and SSR output types are used for on/off and time proportioning control. The isolated Vdc and
mA output types are used for linear control.
The
Heating on-off control
function will turn on the output when the process value is below set point. When
the process value rises above the set point plus the on-off control hysteresis, the output will turn off.
The
Heating time proportioning
function uses the PID settings to cycle the output on and off according to the
percentage of heating required using the cycle time configured for output 1. For example, if the percentage of
output is 50% and the cycle time is 18 seconds, the output will repeat on/off cycles of 9 seconds each. If the
output was only 25%, the output would be on for 4.5 seconds and off for 13.5 seconds of the 18 second cycle
time.
The
Heating linear control
function uses the PID settings to vary the Vdc or mA output from the minimum to
the maximum range of the output as a direct percentage of the heating output.
Summary of Contents for MCT-MC 4.3
Page 1: ...MCT MC 4 3 User Manual MCT MC 4 3 User Manual Rev A February 2018...
Page 176: ...MCT MC4 3 FDC MCT MC 176 Appendix...
Page 177: ...MCT MC4 3 Appendix 177 FDC MCT MC Open Frame Power Supply Specifications...
Page 178: ...MCT MC4 3 FDC MCT MC 178 Appendix...
Page 179: ...MCT MC4 3 Appendix 179 FDC MCT MC A 6 Power On Delay Relay Specifications GE1A C10HA110...
Page 180: ...MCT MC4 3 FDC MCT MC 180 Appendix...
