Parker SLVD-N Servo Drive Fault Codes

Troubleshoot your Parker SLVD-N compact servo drive with our updated fault code list. Learn to interpret the 2-digit LED display, use MotionWiz, and resolve common motion errors.

Parker SLVD-N Fault Codes Reference Table

Below is the complete list of fault codes. Please check the numeric value flashing on the front of the drive unit to identify the specific alarm.

Parker SLVD-N Servo Drive Fault Codes

Parker SLVD-N Servo Drive Fault Codes

Fault Code and Meaning Cause and Remedy
0
Drive OK		 Cause:
Drive is functioning normally.

Remedy:
None required.
1
Over Voltage on the D.C. Link		 Cause:
Voltage on the DC link has exceeded limits.

Remedy:
  • Check the three-phase power line.
  • Check the break circuit and the braking resistor.
2
Under Voltage on the D.C. Link		 Cause:
Voltage on the DC link is too low.

Remedy:
  • Check the three-phase power line.
3
Over current		 Cause:
Excessive current detected.

Remedy:
  • Check for any mechanical blockage and make sure the motor is the appropriate size for its current use.
  • Check the motor connections and for any phase-phase or phase-ground short-circuits.
  • Check the machine speed and the service cycle.
  • Make sure a line trap isn’t connected to the motor!
4
Resolver		 Cause:
Feedback signal issue.

Remedy:
  • Check the connections of the resolver and the connectors on both sides (drive-motor).
5
PTC motor alarm		 Cause:
Motor overheating or sensor fault.

Remedy:
  • Check the PTC connection cable.
  • If the alarm persists, disable the drive, remove power from the motor and de-energize the drive (24VDC).
  • Remove the PTC connector from the drive, short-circuit the PTC (connecting PTC+ and PTC-) on the same drive terminal block.
  • Supply power to the drive (24VDC). If the alarm persists, either the drive is in fault state, or the PTC on the motor is in fault state.
  • (At the end of the test, remove the PTC short-circuiting connection).
6
Drive Over Temperature		 Cause:
Drive unit is overheating.

Remedy:
  • Check the cooling fans and for any restrictions to air flow.
  • Check the breaking cycle.
  • Check the environmental temperature of the electrical control panel where the drive is installed, as well as the external room temperature.
7
External alarm		 Cause:
Triggered by application (see the pico-PLC).

Remedy:
  • Check application specific pico-PLC logic.
8
Auxiliary alarm		 Cause:
Triggered by application (see the pico-PLC).

Remedy:
  • Check application specific pico-PLC logic.
10
check sum PLC		 Cause:
PLC data corruption or error.

Remedy:
  • Set the default of the drive, save and restart the drive.
  • Reprogramming the drive.
11
check sum parameters		 Cause:
Parameter data corruption.

Remedy:
  • Set the default of the drive, save and restart the drive.
  • Reprogramming the drive.
14
Brake overload		 Cause:
Braking resistance use overload.

Remedy:
  • Check braking cycle and resistor sizing.
15
Default parameter		 Cause:
Parameter error.

Remedy:
  • Reprogramming the drive, save and restart the drive.
17
Calibration error		 Cause:
Calibration data invalid.

Remedy:
  • Contact technical support or retry calibration if applicable.
22
Ambient over temperature		 Cause:
Ambient temperature too high.

Remedy:
  • Check the temperature of the environment.
24
Braking transistor protection		 Cause:
Short-circuit braking resistance.

Remedy:
  • If an external braking resistor is connected to the drive, check the resistor status and wiring.
  • Can be only reset at the next power on.
25
Feedback speed error		 Cause:
Issue with speed feedback signal.

Remedy:
  • Check the selection of feedback and the connection.
....
Limitation of current (I²T)		 Cause:
The drive goes in I²T mode due to an overload (it required more current that was available).

Remedy:
  • Check the cables between motor and SLVD-N (there should be no inverted phases).
  • Take special care with motors with terminals rather than the connector: it’s easy to make a mistake.
  • Adhere strictly to the wiring diagrams.
  • Check Power limit active (if 1-phase supply: b94.15=1).
 

How to Read Parker SLVD-N Faults via MotionWiz

While the 2-digit LED provides a quick reference, connecting your PC to the drive using the MotionWiz configuration software is the best way to perform deep diagnostics in 2026. Connection is typically established via the RS232 serial interface (using the X10 port).

Key Diagnostic Features:

  • Error Log: MotionWiz provides access to the internal error buffer. This allows you to see not just the current fault, but a historical list of events that may have led to the current trip.
  • Oscilloscope Window: You can trace motor variables such as Phase Current, DC Bus Voltage, and Speed Error. This is essential for troubleshooting intermittent “Error 2” (Overvoltage) or “Error 5” (Ixt) trips caused by aggressive deceleration or mechanical friction.
  • Real-Time Status Bits: The “Drive Status” window in MotionWiz shows the status of internal logic bits, helping you determine if the drive is disabled due to a hardware fault or a missing “Drive Enable” signal from the PLC.

Frequently Asked Questions (FAQ)

Q: What is the difference between an Alarm and a Fault on the SLVD-N?

A:

  • Alarms/Warnings: These indicate the drive is reaching a limit (e.g., motor thermal image) but is still operational. The display may flash a code but the motor keeps running.
  • Faults: These are critical failures that immediately open the power bridge, stopping the motor. The fault code will be locked on the LED display.

Q: How do I reset a Parker SLVD-N fault?

A: Once the cause of the trip is addressed, you can reset the drive by:

  1. Toggling the Alarm Reset digital input (if programmed).
  2. Using the “Reset” command within the MotionWiz software environment.
  3. Cycling the 24V DC control power (terminals 1 and 2 on the X4 connector).

Q: Why is my drive displaying “Error 7” (Resolver/Encoder Error)?

A: This indicates a failure in the feedback loop. Check the feedback cable connections at both the drive (X1) and the motor end. This is often caused by electrical noise interference or a damaged cable shield. Ensure the motor frame is properly grounded.

Q: Where is the fault history stored?

A: The fault history is stored in the drive’s internal non-volatile memory. It can be accessed through the “Diagnostic” menu in MotionWiz or by scrolling through the drive’s internal parameters using the keypad (if an external keypad is attached).

Comments

Post a Comment

Popular posts from this blog

Allen Bradley Kinetix 5500 Drive Fault Codes List

Complete guide to Allen Bradley Kinetix 5500 fault codes. Troubleshoot FLT codes, Single-Cable (DSL) feedback errors, shared bus faults, and perform diagnostics via Studio 5000. Kinetix 5500 Fault Codes Reference Table Kinetix 5500 Fault Codes Reference Table Kinetix 5500 Fault Codes Reference Table Fault Code and Meaning Cause and Remedy FLT S03 – MTR OVERSPEED FL Motor Overspeed Factory Limit Fault Cause: Motor speed has exceeded 125% of its maximum speed. Remedy: Check control loop tuning. FLT S04 – MTR OVERSPEED UL Motor Overspeed User Limit Fault Cause: Motor speed has exceeded motor overspeed user limit. Remedy: Check control loop tuning. Increase the Motor Overspeed UL attribute value. FLT S05 – MTR OVERTEMP FL Motor Overtemperature Factory Limit Fault Cause: Calculations based ...
Read more

Danfoss VACON 100 FLOW Drive Fault Codes List

Access the complete reference guide for Danfoss VACON 100 FLOW drive fault codes. Learn to diagnose Multipump communication errors, dry run faults, and use Vacon Live software. VACON 100 FLOW Fault Codes Reference Table VACON 100 FLOW Faults and Alarms VACON 100 FLOW - Fault Tracing Fault Code and Meaning Cause and Remedy Fault Code 1, ID 1 Overcurrent (Hardware Fault) Cause: There is too high a current (> 4 × IH) in the motor cable. a sudden heavy load increase a short circuit in the motor cables the motor is not the correct type the parameter settings are not properly made Remedy: Check the loading. Check the motor. Check the cables and connections. Make an identification run. Set the acceleration time longer (P3.4.1.2 and P3.4.2.2). Fault Code 1, ID 2 Overcurrent (Software Fault...
Read more

ABB ACH580 Drive Fault Codes List

Access the complete reference guide for ABB ACH580 HVAC drive fault codes. Learn to diagnose issues via the Hand-Off-Auto panel, BACnet integration, and Fireman’s Override. The ABB ACH580 is the industry-standard flagship drive for HVACR applications. Designed to control air handling units, cooling towers, and chillers, it ensures critical comfort and safety in buildings. When a malfunction occurs, the dedicated Hand-Off-Auto (HOA) control panel displays a 4-digit code alongside plain-text diagnostics, often integrated directly into the Building Management System (BMS). This guide provides the most updated reference to help you interpret these codes and maintain building environmental standards. ACH580 Fault Codes Reference Table Use the search bar below or browse the table to identify your specific error code: ABB ACH580 Drive Fault Codes List ABB ACH580 Drive Fault Codes List Fault Code and Meaning Cause and Remedy A2B1...
Read more