‼️What TunnelWatch Error Messages mean
Collision Avoidance activated:
The collision avoidance system stopped the conveyor because it detected that two vehicles at the tunnel exit were too close together.
This happens when a progress switch is triggered, and the switch it set up in the Progress Switches editor with a value of Collision Avoidance in its Detection mode field and a value of Stop Conveyor in its Action field.
Enter Switch always off:
The Tire switch was activated twice while the Enter switch was not activated. If this message is being generated consistently, troubleshoot the Enter switch.
On the TCS, the Enter switch green indicator LED should light up as soon as a vehicle passes in front of or over the Enter switch, and it should turn off as soon as the vehicle leaves the Enter switch. If the Enter switch LED turns on or off too soon or too late, or is always on or always off, the problem could be the input, the Enter switch, or the wiring.
If the LED never turns on.
Verify the input works by using a short piece of wire to jumper the COM and 1B terminals together.
These terminals are located on the upper left terminal strip in the Tunnel Control Station.
The LED should turn on.
If the LED turns on, the input is good, and you should try some of the additional suggestions for fixing the Enter switch or wiring at the end of this section.
If the LED does not turn on then move the Enter switch wire from the 1B terminal to an unused input terminal (1F or higher).
Check to make sure this input works by using a short piece of wire to jumper a COM terminal and the new input terminal together.
The LED for this input should turn on.
If the LED does not turn on then call DRB Systems to replace the Input card.
If the LED is ON then change the TunnelWatch software settings to match the new Input number.
If the LED never turns off.
Try temporarily disconnecting the wire from the 1B terminal.
The LED should turn off.
If it does, the input is good and you should try some of the additional suggestions for fixing the Enter switch or wiring at the end of this section.
If the LED does not turn off then move the enter switch wire from the 1B terminal to an unused input terminal (1F or higher)
If the LED switches on and off appropriately with the activation/deactivation of the Enter switch then change the TunnelWatch software settings to match the new Input number
If the LED turns on and stays on then there may be a problem in the wiring of the device. You should try some of the additional suggestions for fixing the wiring at the end of this section.
If the LED turns on and off, but not at the right times, or if the input tested OK in one of the previous tests, the problem is likely in the wiring or enter switch itself.
Check to make sure the wires are properly connected to the COM and 1B terminals on the upper left terminal strip in the Tunnel Control Station.
Try cleaning the Enter switch or adjusting its sensitivity.
If you cannot locate the problem with the Enter switch, contact your electrician or tunnel equipment supplier for further help.
Enter switch always on:
The measured vehicle length is greater than the value entered for Length of Vehicle Before Switch Failure Is Reported field (Tunnel Related Inputs screen, Enter Switch tab).
Enter switch intermittent:
The Enter switch condition existed, but has since been addressed - the Enter switch is now operating correctly.
Enter switch ON: No car present:
If the field If Enter Switch Is Activated And No Cars Are In The Queue is set to Stop Conveyor or Idle Conveyor, this message is displayed to show why the conveyor movement was halted.
No Pulse: Roller Jam:
A roller door is stuck. If this happens repeatedly, there may be a problem with the roller hardware or you may need to adjust the roller pacing.
No Pulse: Switch Failed:
The pulse switch did not activate within the maximum pulse time defined in TunnelWatch.
Check and troubleshoot the physical pulse switch hardware and wiring.
Check the switch settings on the Pulse Switch tab in the Tunnel Related Inputs screen from the Setup page
Power loss or reboot:
The computer was reset or lost power.
Progress error (Progress switch error):
The conveyor is stopped because of a problem with the device listed after the colon. Details.
Progress warning:
A progress error condition is detected, but hasn't caused the tunnel to shut down yet.
Pulse failed: Conveyor stopped:
The pulse did not activate within the maximum pulse time as defined in the TunnelWatch setup screens, and simulated pulse could not be used.
The lost pulse counter is only incremented when TunnelWatch gets a pulse BEFORE the maximum pulse time, but 180% longer than the previous pulse. It also must be approximately equal to an even multiple of the average pulse time.
For example, if the average pulse time is 2 seconds, the time on the previous pulse is 1.9 seconds and the next pulse is received in 4.1 seconds, TunnelWatch will record a single lost pulse and continue to run. TunnelWatch will also issue a message indicating an intermittent pulse.
Alternately, if the next pulse is received in 3.0 seconds (158% of the previous pulse time of 1.9 seconds), TunnelWatch will assume a normal pulse and slow its conveyor speed to match the new pulse data with no error generated since the difference in speed is less than 180% of the previous pulse time
Pulse failed: Using sim. pulse:
The pulse did not activate within the maximum pulse time as defined in the TunnelWatch setup screens. A simulated pulse will be used instead.
Pulse switch intermittent:
The pulse switch skipped one or more pulses but has since resumed sending continuous pulses. This can affect the tunnel operation if pulses are skipped regularly. This warning should not be ignored. The Lost Pulse counter on the Tunnel Status screen tracks the number of pulses lost.
Roller Jammed Conveyor:
TunnelWatch did not receive a pulse input within the Maximum Pulse Time.
Simulated pulse sw. being used:
TunnelWatch is using a simulated pulse switch because there is a problem with the physical pulse switch hardware.
Station(s) are not responding:
One or more TCS or TCS2 did not respond to the computer's commands. See "Tunnel Control Station I Communications Troubleshooting (Original TCS)" for more information.
Tire switch intermittent:
The tire switch was activated only once during the length of a vehicle.
Tire switch stuck:
The tire switch is always off or always on for the length of the vehicle.
Vehicle Profile detector failed:
3 consecutive attempts to read the Vehicle Profile Detection sensor failed. This status message is cleared on the next successful read.
Vehicle was too long:
The Enter switch was activated longer than the Maximum Vehicle Length but shorter than the Length Of Car Before Enter Switch Failure Is Reported. See the Tunnel Related Inputs screen.
Vehicle was too short:
Something activated the Enter switch, but it didn't remain in the Enter switch for the number of feet configured in the Minimum Vehicle Length field of the Enter Switch tab of the Tunnel Related Inputs screen. TunnelWatch does not count this as a car, so the car in the first queue position is not advanced into the tunnel and remains in the queue.
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