V2 Controller - Frequently Asked Questions

How Do I Clear Latched Faults for Fire Recall, EMS, etc.

Procedure

1. Verify all required inputs are connected.

2. Put Dip Switch 1 = ON.

3. Press the RESET button on the SRU board.

4. After pressing RESET, turn Dip Switch 1 = OFF.

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F71: Speed Deviation Error (Traction)

Symptom

• The detected car speed is different from the expected value.

Causes & Remedies

• Check proper connection of DP1 and DP2 signals.

• Verify that the DP1 and DP2 inputs on the CT SRU toggle rapidly back & forth as the car moves.

• On IP8300 systems, verify the CAT5 cable between the IP8300 breakout board and selector head is fully connected; reseat if needed.

• Ensure the cable is a standard CAT5 cable (no crossover).

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F148: Brake Pick Switch (BPS) Fault

Symptom

• Brake failed to lift when commanded.

Cause & Remedy

• The controller monitors mechanical brake status.

• Check that the brake lifts at the appropriate time.

• Confirm brake inputs are registering correctly.

• Verify if other faults occurred simultaneously that may cause the brake pick error.

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F100: CN0 — No Communication with Cartop

Symptom

• Loss of communication between Machine Room and Cartop.

Causes & Remedies

• Ensure CN+/CN- wires in the traveling cable are properly connected.

• Verify Machine Room REF → Cartop REF connection.

• Ensure the shield on the communication cable is tied to REF at both ends.

• Confirm cat5 cables are properly oriented (Net → Net, N → N, GND → GND).

• Test communication with DEBUG → COMM STATUS; should normally remain at 100%.

• If fault persists after cable checks, test by connecting MR and CT SRU boards directly (power + CN signals).

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Door Operations — Proper Flagging for Door Signals

Steps

• Navigate to STATUS → Car Door Data.

• The indicator flags show input/output states:

  • GSW — Gate Switch is made (door closed)

  • DCL — Door Closed Limit

  • DOL — Door Open Limit

  • DO/DC — Door Open/Close outputs

  • ND — Nudge output

  • DCB/DOB — Door Close/Open Buttons

  • PHE — Photo-eye safety edge

  • SE — Mechanical safety edge
    (Flag indicator appears as text if active; dots if inactive.)

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Movement Issues — Hydro: Car is Not Moving (Safety String)

Check

• The safety string supplies voltage to valve coils.

• If the safety string is open, the controller may command motion but valves won’t activate → car won’t move → fault.

• Test: Check I/O 601 and 604/605 on output signals during run command.

• If outputs are present but valves don’t activate, inspect the safety string wiring and jumpers.

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Movement Issues — Car Running Backwards (Traction)

Fix

1. On Magnetek keypad:

   • Press Right Arrow → until Configure C0 appears.

   • Press Down Arrow → User Switches C1.

   • Press Enter.

2. Navigate to Motor Rotation.

3. Press Enter, then Up Arrow to toggle between Forward and Reverse.

4. Press Enter to save.

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Chimes & Signals — Double Chime on Down Arrival

Enable Double Chime

• Go to Main Menu → Debug → Binary Parameters.

• Set parameter 00-109.5 for double chime output on down arrival.

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Construction Mode — Why Can’t I Run Construction Mode (Jumping Details)

Explanation

• Construction mode bypasses most common I/Os on the Machine Room SRU board.

• If additional I/Os are generating faults, extra jumpers may be required before the controller will run in construction mode.

• Refer to the job drawings or the SRU I/O sheet for the exact jumper requirements and I/O locations.