Micro Control MCS-BMS-GATEWAY Manuale Utente Scaricare il pdf (Pagina 11)

GETTING STARTED MANUAL REVISION 2.0

 All setpoints should be displayed on the MCS-Magnum and reviewed for correctness. Specific attention

should be paid to the following Setpoints:

 Verify / set ‘Full Load Amps’

 Verify / set ‘Target’ (supply air / leaving liquid)

 ‘Low Suction, Freeze’.

 ‘High Disc’ based on water or air-cooled

 ‘Condenser‘ setpoints

 You are now ready to turn on main power.

 Once main power is ON verify the following:

 All Relay Outputs are in ‘AUTO’. (Not ’Lockout’)

 Flow switch is ‘ON’ or ‘YES’.

 RUN/STOP is in ‘RUN’.

 Assuming additional capacity is required the control state should go to ‘LOADING’. Once the delay

has reached zero the lead compressor will turn on. (If a screw with oil, then the oil pump will come

on first)

 When the compressor comes on the LLS should open. (There may be a pre-pump out to eliminate

liquid from reaching the compressor for direct expansion systems.)

 Watch suction, discharge, amps etc. to verify the unit is running normally.

 For screw compressors: Verify if the load and unload pulse timing setpoints need adjusting. The

pulse should allow the slide to move so the amps are moving but not overshooting the target. You

may need to also adjust the amp deadband setpoints if the system seems to hunt. (Amp deadband

should be about 3-4% of FLA)

 Fine-tuning should now be done. (ROC, step delay, control zone, etc.)

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Micro Control MCS-BMS-GATEWAY Manuale Utente Pagina 11