To operate the P series drives at low DC voltages there are additional software and wiring steps that must be conducted to ensure proper operating conditions.
First, in the Drive Support Tool software do the following:
- Hold the Alt key and then click the Engineering Setup (blue down arrow icon in toolbar).
- This will open a window allowing users to click a check box for DC input. This allows the standard drive to operate at 24, 48 or 80volts for low voltage motors:
- Then click the Flash Save button (EEPROM icon).
Next, follow through WIRING:
DO NOT apply AC voltage to the drives mains connections L1, L2, L3
- Remove factory installed jumper from PO/PI
- Apply 24-80VDC to PI and N [this is the voltage you want your motor to run at]
- Control power C1/C2 requires 110-230VAC single phase
- Your motor phases U,V,W connect to the standard connector as you would normally
In this specific case, AC wiring is the same as the single phase wiring 220VAC in the user manual. The drives should already be set for 120VAC wiring with the above menu configuration but may need to be reset if the user has changed it, in the event of a factory reset, or a firmware update. Double check the 120VAC configuration has saved by going through the first section of this page before continuing.
Additional note, IF you are operating with the mSR or other motors at lower bus voltages (like 24V or 48V):
You will find the default current loop gain settings to be more aggressive than desired. The symptom will be a high frequency audible noise from the motor when enabled due to this default current loop gain. This gain can be lowered using the P Series Drive Support software in the "Trace / Trigger Monitor" screen via the Gain Window button. See screen shot below. For 48Vdc bus voltages, a value around 50% will be appropriate and for 24Vdc bus voltages a value of around 25% will be appropriate.
update 8/25/16 jw
25OCT18 JD - clarity/formatiing