Why does my Danfoss Control Panel have repeated fuse or circuit breaker faults?
Repeated fuse or circuit breaker faults in your Danfoss Control Panel may stem from:* An application problem: If current is too high, reduce the load on the motor.* A panel problem: If current is too high, reduce the load on the motor.* A power problem: Correct any problems found.* A motor problem: Repair or replace motor if a problem is found.
How to fix overload trips on Danfoss Control Panel?
To address overload trips on your Danfoss Control Panel, consider these potential causes:* Motor overloaded: Perform startup and verify motor current is within specifications. If not, reduce the load on the motor.* Loose connections: Perform pre-startup check for loose connections and tighten. Replace any overheated components and wires.* OL not set correctly: Set correct motor current on OL.
What causes an open control fuse in a Danfoss Control Panel?
An open control fuse in your Danfoss Control Panel may be caused by:* Improper voltage applied: Correct voltage mismatch. This could potentially damage the panel. Use caution when applying power.* Customer wires incorrectly terminated: Correct any wrong connections. This could potentially cause damage to the panel.* Control ground fault: Correct any ground faults found. This could potentially cause damage to the panel.* Control short: Correct any shorts. This could potentially cause damage to the panel.
What causes an open SMPS fuse in my Danfoss Control Panel?
An open SMPS fuse in your Danfoss Control Panel could result from:* Improper voltage applied: Correct voltage mismatch. This could potentially damage the panel. Use caution when applying power.* Customer wires incorrectly terminated: Correct any wrong connections. This could potentially cause damage to the panel.* Control ground fault: Correct any ground faults found. This could potentially cause damage to the panel.* Control short: Correct any shorts. This could potentially cause damage to the panel.
Why does the contactor fail to pull in on my Danfoss Control Panel?
If the contactor fails to pull in on your Danfoss Control Panel, it could be due to:* Contamination: If contamination is found, repair or replace.* Defective coil: If readings are not the same or if there are visible signs of damage, replace the coil or contactor.* Auxiliary contact binding action: If contactor operates with auxiliaries removed, replace auxiliary contacts.
What causes a contactor to fail to drop out in a Danfoss Control Panel?
If a contactor fails to drop out in your Danfoss Control Panel, check for these potential causes:* Contamination: If contamination is found, repair or replace.* Defective coil: If readings are not the same or there are visible signs of damage, replace the coil or contactor.* Auxiliary contact binding action: If the contactor operates with auxiliaries removed, replace auxiliary contacts.
What to do if my Danfoss Control Panel has no function?
If your Danfoss Control Panel isn't functioning, several issues could be the cause:* Missing input power: Ensure the correct voltage is supplied at the source.* Blown fuses or tripped circuit breaker: Reset the circuit breaker or check fuses for opens (with power removed).* Loose connections: Tighten any loose connections in the panel and customer connections.* Missing customer connections: Ensure all applicable connections or jumpers are correctly installed, especially the customer interlock.* Incorrectly terminated customer wires: Correct any wrong connections, as this could damage the panel.* Improper voltage applied: Correct any voltage mismatches, as this could damage the panel. Use caution when applying power.* Incorrect power connections: Correct any wrong connections,...
Why does the power fuse or circuit breaker keep tripping on my Danfoss Control Panel?
If the power fuses keep blowing or the circuit breaker trips repeatedly on your Danfoss Control Panel, it could be due to several reasons:* Improper voltage applied: Correct voltage mismatch. This could potentially damage the panel. Use caution when applying power.* Incorrect power connections: Correct any wrong connections. This could potentially damage the panel.* Power ground fault: Eliminate any ground faults detected.* Phase to phase short: Eliminate any shorts detected.* Motor overload: Perform startup and verify motor current is within specifications. If motor current is exceeding nameplate FLA, reduce the load on the motor.* Drive overload: Perform startup and verify that drive current is within specifications. If not, reduce the load on the motor.* Loose connections:...
General| Category | DC Drives |
|---|---|
| Series | VLT FC Series |
| Output Voltage | 0-100% of input voltage |
| Protection Features | Overvoltage, Undervoltage, Overcurrent, Short circuit, Overtemperature, Motor overload |
| Communication Interfaces | CANopen, PROFIBUS, Ethernet |
| Cooling Method | liquid-cooled |
| Enclosure Rating | IP20, IP21, IP55 |
| Ambient Temperature | -10°C to +40°C (14°F to 104°F) without derating |
Manual provides installation and operation info for the vertical panel and VFD.
Explains symbols used for warnings, cautions, and notes in the manual.
Explains VFD operation, panel functions, and bypass options (EMB/ECB).
Describes operation with 2-contactor and 3-contactor bypass configurations.
Details bypass circuitry with M3 and M2 contactors for EMB and ECB.
Details bypass circuitry with M3 and M2 contactors for EMB and ECB.
Details bypass circuitry with M1, M2, M3 contactors for EMB and ECB.
Allows common remote signal for start/stop in drive or bypass.
Allows common remote signal for start/stop in drive or bypass.
Transfers motor to bypass automatically on drive fault after a delay.
Requires a remote response before motor starts in bypass.
Switches panel to bypass on remote fire mode command, ignoring safety inputs.
Programmable responses to external fire mode command signal.
Thermally activated device provides overload protection for motor in bypass operation.
Lists features for EMB(0), EMB1, EMB2, and ECB platforms.
SMPS backs up VFD logic, converts AC to 24 VDC, and provides immunity.
Removes line input power to drive and bypass; available in four options.
Removes line input power to drive and bypass; available in four options.
Disconnects main AC line input power to the drive only.
Used for 2-contactor or 3-contactor bypass for EMB units.
Describes three tiers of option panel enclosure types (Tier 1, 2, 3).
Defines voltage and HP ratings for option panel frame sizes.
Inspect packaging, verify model/power match order, and handle shipping damage claims.
Compare model number, ensure voltage ratings match, and check panel output rating.
Check ambient temp, wall strength, installation area, and keep interior clean.
Liquids can condense, causing corrosion. Use TYPE 12 enclosures for protection.
Liquids can condense, causing corrosion. Use TYPE 12 enclosures for protection.
Particles cause mechanical/electrical failure. NEMA 1 offers limited protection. Use NEMA 12.
Corrosive gases cause corrosion. Recommend fresh air ventilation or AC cabinets.
Lists recommended tools for panel installation.
CAUTION on branch circuit protection requirements per NEC.
Drive input fuses may be factory installed or provided by the installer.
Use specified or equivalent fuses for internal option panel fuses.
Check unit weight and use suitable lifting device for safe lifting.
Check unit weight and use suitable lifting device for safe lifting.
Procedures for lifting using spreader bars, hoists, and lifting rings.
Use competent operator and ensure stability when using a forklift.
Lists approximate shipping weights for different frame sizes.
Discusses ambient temp limits, clearance requirements, and mounting.
WARNING on hazardous voltages and need for qualified personnel.
Identifies components and provides definitions for reference designators.
Details wiring paths, access covers, conduit requirements for isolation.
NOTE on using 75°C rated copper wiring. Tables for wire size selection.
Wire rating specs are on tightening torque/wire rating label.
Tighten connections to specified torques. Specs are on label.
NOTE on conduit isolation. Connect 3-phase AC input power to L1, L2, L3.
WARNING on induced voltage. Connect 3-phase motor wiring to T1, T2, T3.
WARNING on grounding hazard. Follow codes, use dedicated ground wire.
NOTE on conduit isolation. Recommended control wiring ratings.
ECB reports data. Connect via EIA-485 or option card terminals.
Serial communication point maps, parameters, and bypass functionality details.
Inspect installation details like auxiliary equipment, cable routing, grounding, and panel interior.
WARNING on hazardous voltages. Steps for initial power-up, voltage checks, and motor rotation.
Describes EMB(0) and EMB1 types with reduced functionality from EMB2.
Fault condition activates bypass without operator intervention via DIP switches.
Provides remote run/stop control of motor in bypass mode.
Allows remote signal to notify drive to start when system is safe.
CAUTION on motor damage. Provides overcurrent protection for motor in bypass.
Prevents drive/bypass operation; fire mode overrides.
Runs motor at full speed in bypass, ignoring safety/overload inputs.
Reports drive faults and bypass communication errors via alarms or outputs.
Describes 2-contactor and 3-contactor bypass selector switches.
Connect control wiring, program functions, and operate ECB. ECB uses drive processor for control.
Defines drive terminals and shows removable connectors for ECB.
ECB control card provides input/output for bypass operation and status reporting.
Use LCP to switch between drive mode or bypass.
Use LCP to program ECB functional options via parameters.
LCP keys control drive/bypass; [Drive Bypass] selects mode.
ECB has four modes: drive, bypass, auto bypass, test.
Provides examples of status word bit conversions to binary.
Fault condition activates bypass via timer without operator intervention.
Drive sends run request, waits for remote response before starting motor.
CAUTION on motor damage. Overcurrent protection for motor in bypass.
Prevents operation; fire mode overrides. Use terminals X57 1&2 for bypass control.
Provides remote run/stop control for motor in drive or bypass.
Programmable fire mode. Motor operates in bypass if drive fails.
ECB monitors contactors and reports failures. Drive monitors ECB card communication.
Use specified or equivalent fuses for option panel power fuses.
Discusses input line reactor and output dU/dt filter functionality.
Describes main disconnect options (fused, breaker, no fuses) and drive disconnect.
Options for drive control/bypass: single motor, dual motor, contact motor select.
Allows one drive to alternate between two motors using contactors.
Lists alarms/warnings for ECB and their definitions.
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