16.12 Self-monitoring of the brakes according to EN81-A3The operating brakes can be used as brake elements for protection against unintentional movementof the car. The micro-switches on the brakes are used for the required self-monitoring. Monitoring cantake place both with normally closed contacts (NC) and normally open contacts (NO). The type ofmonitoring contact can be selected in the input programming.16.12.1 Activation of the self-monitoringThe self-monitoring is activated by selecting the brake circuits count and the function of the micro-switch based on the “BR” parameter in the “Startup” or “Monitors” menu (e.g. 2 brake circuits withnormally open function of the microswitches: BR=2xNO).Monitoring|-" BR 2*NO|-" 2*NOBrake MonitoringStartup|-" BR 2*NO|-" 2*NOBrake Monitoring16.12.2 Activation of the ZETADYN lock in case of a malfunctioning brake circuitThe lock function of the ZETADYN is engaged by activating the “LOCKBR=On” parameter in the“Monitors” menu.Monitoring|-" LOCKBR Off|-" OnLock inverterActivation of the parameter ensures that the ZETADYN locks on detection of a faulty brake circuit.The ZETADYN lock can only be released by setting the “Monitors / UNLOCK = On” parameter.16.12.3 Function test of the self-monitoringFunction test according to EN81-1:1998+A3:2009The self-monitoring test required according to EN81-1:1998+A3:2009 Enclosure F8.3.2 is performedfor every software version during internal software tests at Ziehl-Abegg.For this, 10 test runs are made and the function of the self-monitoring checked.Function test in start-upIf the drive unit brakes are used as brake elements for protection against unintended movement of thecar, a function test of the self-monitoring must be made during start-up.Test step 11. Disconnect signal cable at a monitor input.2. Perform test run.3. The error message "380 BR:Start Error" (monitor function "NCC") or "582 BR:T2 too small"(monitor function "NOC") must be output already at the start, otherwise the monitor is faulty.4. The ZETADYN locks, no further travel is possible.5. Re-connect the signal cable.6. Repeat the test run to check the lock. A new run may not be possible, the ZETADYN is still locked.7. Release the lock by setting the “Monitoring / UNLOCK = On” parameter (see display).8. Start new run, this must take place without errors.Monitors|-" UNLOCK On|-" OnUnlock encoderRepeat test step 1 for every monitor input.Translation of the original operating instructionsZETADYN 4C Special functionsR-TBA12_01-GB 1415 Part.-No. 00163371-GB179/20416Special functions
