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• Modbus # - Adjustable Modbus ID. Exhaust Fan range 11-18, Supply Fan range 21 or 22. A VFD and
MSC cannot use the same Modbus #.
• Options
• Feedback Fault - If set to ENABLED, the MSC will monitor RPM feedback. If the MSC does not
receive data for 30 seconds or 70% of the expected RPM, this fault will be displayed. Ziehl motors
do not provide feedback.
• 2 Speed - The 0-10V output cannot be used when the 2 Speed or Manual Speed options are On,
or if the “Control Type” is set to Modbus. When the 0-10V OUT and 0-10V IN terminals are not
jumped together, the fan will operate at low speed. When 0-10V OUT and 0-10V IN terminals are
jumped together, the fan will operate at high speed.
• Analog Speed - The user may enable/disable the option, and calibrate a potentiometer for proper
operation that is connected between the 0-10V OUT and 0-10V IN terminals. When enabled, you
must calibrate the potentiometer. Follow the MSC’s on-screen instructions. The speed will be
adjustable between 0V (low speed) to 10V (high speed).
• Input Threshold - When control type is set to Remote 0-10V, an input threshold will be created for
motor control. Refer to Figure 11 on page 18 for threshold examples.
• Zero Operation - The user may select how the motor will operate when the
0-10V input is at 0V. The options will be Off or Low Speed (default).
• Threshold - Increasing the threshold value will allow for the device to hold its voltage/RPM
output while the input is between the 0 - threshold value.
• Restore Settings - Provides access to restore factory settings, and test & balance settings.
• Factory Settings - This will reset all values back to factory settings.
• T & B Settings - This will reset all values back to last saved test & balance settings.
• Change Password - Users may update the password setting to their own. Password 0225 will also be
stored for backup. Both passwords will allow users to enter “Board Config” settings.
Software Version - Displays the current software version installed on the board.
Faults - This provides access to “Fault History,” “Fault Totals,” and “Clear Faults.”
• Fault History - Displays fault history and board reboots in chronological order. Possible displayed
faults are:
• No Faults - There are no active faults with the system.
• Feedback Fault - Only displayed for motors with feedback capabilities.
• Reboot - Any time the fan goes from OFF to ON, this “fault” will be logged. This fault will only
display in “Fault History.”
• Modbus - Issue with Modbus communication between the MSC and master board.
• Variable Device Fault - When “Analog Speed” is selected and a potentiometer is connected, if the
voltage drops below 1V, this fault will be displayed.
• Fault Totals - Displays amount of faults for Modbus, Feedback, Var Device, Reboot, and Total Faults.
• Clear Faults - Users may clear all faults from the board.
Service - This provides access to service settings. Password: 1234
• Save T & B - After the test & balance process has been completed, save adjustments under this
menu.
• IO Status - Provides access to information about the inputs and outputs of the MSC board.
• V In - Displays the incoming voltage (0-10V) to the MSC.
• V Out - Displays the output voltage (0-10V) to the motor.
• RPM - Displays motor RPM feedback. Ziehl motors do not provide feedback.
• PWM V - Displays equivalent voltage reading of the PWM output to the motor.
• Speed% - Displays PWM percentage output value to the motor.
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