Manual and data sheet for
ENA3 UCM Control
ENA3 UCM Control Manual Version 1.3
Date:
21.04.2017
page
7
of
12
Variotech GmbH, Gewerbeweg 5, 2230 Gänserndorf, Tel +43 2282 60310, https://variotech.com
•
2 LED labeled with „µP“ indicate that the safety system is working properly.
The LEDs are usually lighted constantly.
Only after stopping at the level, the LEDs will flash for a few seconds to show that it tests the safety
relay.
If the LED is flashing all the time, an error occurred which is described in more detail in the section
"Displaying the type of error."
If only one LED is on, the safety control system is defective and must be replaced.
•
1 LED labeled with "FB" indicates the correct function of the feedback switch (braking device).
This LED should light when the car is stopped and the UCM-braking system has switched off.
If the LED is not lighted, the UCM-braking device or the switch must be checked.
•
1 LED labeled with "S" indicates when the safety circuit is activated (Door closed).
This LED must be lighted by closed and locked doors or rather closed safety circuit.
Piezo signal transducer (Buzzer):
•
The Piezo buzzer is in normal operation without function.
However, if an error occurs the Piezo buzzer starts to beep - the same rate as the indicator of „µP“
LED
Reset button:
•
This button has no function during normal operation.
It serves only to restart ENA3 safety control after an error. The button must be pressed briefly. If
the button is jammed or otherwise remains in the pressed state, the safety circuit will not come into
operation again.
Optimization of the number of necessary traveling cable wires:
Especially in the modernization of existing lifts, there is often a lack of free traveling cable wires.
The following 2 tables show the necessary number of traveling cable wires depending on which UCM-
brake actuator is used and where the ENA3 control is located.
Table 1: Shows the required number of traveling cable wires on the assumption that the safety control
is mounted at or near the lift control.
version A:
ENA3 safety control mounted nearby the lift control
At lift box
On the car
roof
Required
traveling
cable wires
Door zone switch
-
x
3
UCM brake actuator, and feedback contact
-
x
4
UCM brake actuator, and feedback contact
x
-
-
supply 24V DC
x
x
-
Safety circuit monitoring
x
-
-
Safety circuit shutdown
x
-
-
re-leveling: test and switch off the bridging of the safety
circuit
x
-
-
Table 2: Shows the required number of traveling cable wires on the assumption that the safety control is
located on the car roof.
Version B:
ENA3 safety control mounted nearby the lift control
at lift box
on the car
roof
required
traveling
cable wires
Door zone switch
x
-
