4-12 Operating the Drive 590 Series DC Digital Drive
If the field voltage is incorrect, make the following checks:
Step 9.1 Internally Supplied Field:
• Check that 3-phase is applied to terminals L1, L2 and L3 when the main contactor is closed.
• Check that the coding fuses on the power board or suppression board are healthy.
• The FIELD ENABLE parameter should be set to ENABLE.
• With the FIELD ENABLE parameter in view, press the ↓ (DOWN) key. The display changes to FLD CTRL MODE. Press the M key. Is
this set to VOLTAGE CONTROL or CURRENT CONTROL?
¾ If set to VOLTAGE CONTROL, check the value of the FLD. VOLTS RATIO parameter. Set this to 65% to
obtain 300V fields from 460V supplies.
¾ If set to CURRENT CONTROL, check the field current calibration set-up, refer back to “Calibration”.
If the field volts are at maximum, check the field continuity. (The field voltage may initially be lower than the rated value
due to a cold field.)
Step 9.2 Externally Supplied Field:
Refer to Chapter 3: “Installing the Drive” - Motor Field Options for conversion details.
• Check the voltage applied (externally fused) to terminals D1 and D2.
• Check the phasing of voltage applied to D1 and D2:
¾ D1 must be connected directly or indirectly to the Red phase on main power terminal L1.
¾ D2 must be connected directly or indirectly to the Yellow phase on main power terminal L2.
• The FIELD ENABLE should be set to ENABLE.
• With the FIELD ENABLE parameter in view, press the ↓ (DOWN) key. The display changes to FLD CTRL
MODE. Press the M key. Is this set to VOLTAGE CONTROL or CURRENT CONTROL?
¾ If set to VOLTAGE CONTROL, check the value of the FLD. VOLTS RATIO parameter. Set this to 65% to
obtain 300V fields from 460V supplies.
¾ If set to CURRENT CONTROL, check the field current calibration set-up, refer back to “Calibration”.
Check that 3-phase is applied to terminals L1, L2 and L3.
Step 10: Check the MMI
Check that all six MMI LED’s are now illuminated. Note that any external interlocks which affect the enable input C5 will affect the state of the
RUN LED.
MMI Menu Ma
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