Maintenance Of The Brake Fault Alarm Function; Troubleshooting - gefran ADL500 Quick Start Up Manual, Specification And Installation

The brake fault alarm function envisages signals that are normally asserted. If the wiring is functionally inverted, simply
negate the corresponding digital inputs in the ADL500 configuration.
To configure the brake fault alarm function, proceed as follows:
1. In the SAFETY menu , change the setting of parameter 11252 Brake Fbk A3 Sel (default Null) and select the digi-
tal input corresponding to the second brake feedback signal If Brake Fbk A3 Sel is set to a value other than Null,
the brake fault alarm function is automatically enabled.
2. Next select the digital input corresponding to the first brake feedback signal in parameter 11236 Brake fbk src
(menu LIFT IN).
The brake fault function is enabled. The installer in charge of the system must test the function each time it is
activated or modified, following the brake fault test procedure.
• Resetting the brake fault alarm
1. Open the LIFT ALARM menu and check the setting of parameter 11204 Brake activity = Disable.
2. In the SAFETY menu, select parameter 11268 Reset Brake Alarm (default 0).
3. The system asks for a code, enter release code 5313.
4. Check again to see whether the Brake Alarm has been reset.
• Disabling the brake fault alarm
1. In the SAFETY menu, change the setting of parameter 11252 Brake Fbk A3 Sel to Null The brake fault alarm func-
tion is disabled.
2. If the new configuration does not manage any brake feedback signals, change the setting of parameter 11236
Brake Fbk Sel (menu LIFT IN) to [3708] Brake cont mon.
• Brake fault alarm test procedure
Proceed as follows:
1. Disconnect the wire connecting the first brake feedback signal to the relative digital input.
2. Try re-starting from the floor with the feedback signal disconnected. If the lift car does not move (correct behaviour),
proceed to step 3. If the lift car moves, the alarm is not working properly. Check the various parts of the system.
3. If the brake fault alarm is connected, reset it and proceed to step 4. If the alarm is not connection, re-check the vari-
ous parts of the system.
4. Repeat steps 1, 2 and 3, disconnecting the second brake feedback signal from the corresponding input.
If the procedure is successful, the brake fault alarm will function properly.
A.4.3 Maintenance of the brake fault alarm function
The installer must repeat the brake fault alarm test procedure during periodical inspections and whenever messages
concerning the brake unit are displayed.
The installer must check the alarm log each time for any faults
A.4.4 Troubleshooting
Motor does not run, the brake fault alarm is
triggered continuously
The motor runs even with the feedback
signals disconnected
94
Fault
Feedback signals disconnected/incorrectly
connected
Brake feedback not configured correctly
Monitoring time too short in relation to system
response times
The brake fault alarm is not connected.
Incorrect PAR 11252 Brake fbk A3 sel / PAR
11236 Brake fbk src setting.
ADL500 • Quick installation guide - Specifications and connection
Possible cause
Re-check brake feedback signal wiring and
electric levels
Check PAR 11236 Brake fbk src, PAR 11252
Brake fbk A3 sel configuration. Check correct
signal operation (electric levels) and invert
digital inputs if necessary
Set a longer PAR 11206 Brake Hold Off time
Check the setting of PAR 11252 Brake Fbk
Sel A3.
PAR 11252 Brake fbk A3 sel and PAR 11236
Brake fbk src must not be set to Null or
Brake Cont Mon.
Solution