Testing The Traction (Driving Ability); Testing The Speed Monitoring - Intec MLC 8000 Operating Manual

INTEC GmbH
Lift controller MLC 8000
22/12/2016
Operating manual V2.0
'1' or '4' key (for upward direction) or '3' or '6' (for downward direction) is driven. Once the
final limit switch is reached, the lift will stop immediately. Within the bottom line of the LCD
display , the message "Safety line off" appears.
After performing the test, the menu item "Travel commands" must be finished by
pressing ESC. Otherwise even the emergency recall operation will not work and it is
not possible to move the lift away from the final limit switch.

6.2.6 Testing the traction (driving ability)

Since the emergency recall operation switch bridges the final limit switches, it can be tested,
directly after testing the final limit switches (see above), if the car or the counterweight are
pulled up or if the ropes begin to slip on the drive pulley if moving on.

6.2.7 Testing the speed monitoring

The lift controller constantly monitors whether or not the rated speed of the lift is exceeded by
more than 20%.
The test can only be done in lifts with digital positioning (like AWG or encoder).
To test this monitoring, the parameter "v Nominal" is set to a smaller value.
After that, a car command is given via keyboard to another floor (menu item "Set car calls" or
keyboard command "1xx↵", .e.g "104↵" for a car call in Floor 4).
It should be noted that the distance to the target floor is large enough that the lift starts at
nominal speed v3.
Upon reaching the 120% of the newly setting of parameter "v nominal" the lift stops
immediately and displays the error "Overspeed" within the LCD screen (state display 1).
After the emergency stop, the lift moves to the nearest floor and then starts again. Only after
the 3rd occurrence of "overspeed" the lift is completely out of order.
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