Cashflow 7000: Single Coin Type Dispensing Error... | terminalfaults.org

Technical Background:

The Cashflow 7000 coin dispensing mechanism relies on a 24V DC system powering individual solenoid-activated coin gates. Each gate is controlled by the main system controller via a serial communication protocol (RS-232 or similar, baud rate typically 9600 or 19200). Gate activation timing and duration are crucial for accurate dispensing. Optical sensors monitor coin flow, providing feedback to the controller. ESD events can disrupt the control logic. Variations in the 24V DC power supply can affect solenoid performance.

Symptoms:

Cashflow 7000 dispenses only one denomination of coins when multiple denominations are expected based on transaction data. Unit otherwise functional. No error codes consistently reported. Occurrence is intermittent, regardless of total coin inventory.

Possible Causes:

Solenoid Failure: One or more solenoids responsible for releasing specific coin denominations may be failing due to mechanical wear or electrical coil degradation.
Gate Obstruction: Physical obstruction (e.g., debris, bent coin) preventing proper coin flow through a specific gate. This can strain the solenoid.
Communication Error: Intermittent disruption in the serial communication between the main controller and the coin dispensing unit, causing incorrect gate activation signals.
Power Supply Fluctuation: Variations in the 24V DC power supply voltage affecting solenoid activation strength and timing.
Optical Sensor Malfunction: Faulty optical sensor providing incorrect feedback to the controller, leading to incorrect dispensing decisions.
Software/Firmware Error: Glitch or bug within the Cashflow 7000's firmware causing incorrect dispensing algorithms.

Solution:

1

Inspect coin dispensing unit for any visible obstructions or debris in coin pathways. Remove any foreign objects.
2

Verify the 24V DC power supply output voltage is within the specified range (typically 24V +/- 10%). Use a calibrated multimeter.
3

Cycle power to the Cashflow 7000. Observe if the issue persists immediately after reboot.
4

Check communication cables between the main controller and the Cashflow 7000 for secure connections. Reseat connectors to ensure proper contact.
5

Utilize the Cashflow 7000's diagnostic mode (if available) to test individual solenoid activation and sensor functionality.
6

Review transaction logs for any patterns or correlations between specific transactions and the coin dispensing error.
7

If available, upload a new firmware image to the Cashflow 7000 to exclude firmware bugs.

Safety Warning:

High voltage components exist within the kiosk. Engage Lockout/Tagout (LOTO) procedures before performing any maintenance. Disconnect power at the main breaker before accessing internal components. Ensure the unit is properly grounded.

Prevention:

Implement a regular cleaning schedule for the coin dispensing unit. Clear any accumulated dust, debris, or spilled liquids. Implement cable strain relief where needed.

Expert Tip:

Check the coin discriminator settings within the Cashflow 7000's configuration menu. Ensure that all coin denominations are properly enabled and calibrated. A slight miscalibration can lead to one denomination being consistently preferred.

Frequently Asked Questions

•What is the typical life expectancy of the solenoids in a Cashflow 7000?

Solenoid life expectancy varies based on usage frequency and environmental conditions. Expect approximately 5-7 years in a high-traffic environment. Consider replacing solenoids preventatively every 5 years.

•How do I access the diagnostic mode on the Cashflow 7000?

The diagnostic mode access procedure varies depending on the Cashflow 7000 configuration. Consult the CPI MEI Cashflow 7000 service manual for specific instructions or contact CPI MEI support.

•What type of lubricant is recommended for the coin dispensing mechanism?

Use a dry PTFE lubricant sparingly on moving parts within the coin dispensing mechanism. Avoid oil-based lubricants, as they can attract dust and debris.

Cashflow 7000: Single Coin Type Dispensing Error Diagnostic Report

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical life expectancy of the solenoids in a Cashflow 7000?

•How do I access the diagnostic mode on the Cashflow 7000?

•What type of lubricant is recommended for the coin dispensing mechanism?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: