How to Solve Error 21 on NICE 3000 Monarch Elevator Controller

The NICE 3000 Monarch Elevator Controller is a reliable and widely used system in the elevator industry. However, like any technical equipment, it may encounter errors from time to time. One such issue is Error 21, which is caused when the maximum frequency setting is less than the rated frequency of the motor. This article outlines the steps to diagnose and resolve this issue efficiently.

Problem Cause

The Error 21 occurs because the system detects a mismatch where the maximum frequency setting is configured to a value less than the rated frequency of the motor. This discrepancy can interfere with the elevator’s operation and must be corrected promptly.

Solution

Follow these steps to resolve Error 21:

1. Check F0-06 and F1-04 for Correctness

• F0-06: This parameter typically represents the motor’s rated frequency.
• F1-04: This parameter usually defines the system’s maximum frequency.

Verify that:

• The value of F1-04 (maximum frequency) is equal to or greater than F0-06 (rated frequency).
• If they are not, adjust these values accordingly in the controller’s parameter settings.

2. Check F6-52, Bit 10

• F6-52 is a parameter with multiple configurable bits.
• Ensure that Bit 10 of F6-52 is set to 1. This bit enables the controller to correctly handle the frequency configuration.

To modify Bit 10:

• Access the F6-52 parameter.
• Toggle Bit 10 to 1 (enabled).

Additional Notes

• Always ensure you have the proper technical manual for the NICE 3000 Monarch Elevator Controller when making parameter adjustments.
• If the error persists after following the above steps, consult with a certified technician or the manufacturer’s support team.

By following these instructions, you can resolve Error 21 and restore the NICE 3000 Monarch Elevator Controller to optimal operation. Proper configuration and regular maintenance are crucial for avoiding such issues in the future.