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ZHD 1500/2000-135/155/175
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Connection unit
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11.2.3
Control devices
If a control device button is held down for too long, the control device is blocked and cannot be used for a number
of minutes. Fault code E flashes on the display. The fault is also indicated on a non-active coil control device with
a lock button, if this is connected to Ctrl 4. The LED on the coil control device then flashes the same number of
times as the number on the control device in question, see the list in section "11.2.2 Fault codes" on page 48.
Example:
Control device 2 is blocked, the LED on the coil control device then flashes twice, goes
out for a moment, flashes twice again, etc.
Coil control device’s LED
Fixed light
The coil control device is active
Extinguished (weak glim-
mer)
The coil control device is not active
Flashing
One of the other control devices is blocked
11.2.4
Supply voltage
The figures below show the desired supply voltage for 12 V and 24 V systems respectively. Speci-
fied voltage refers to voltage when the lift is operated. See also section "16.2 Maximum power
consumption - Minimum recommended conductor cross sectional area" on page 60.
The lift is not working.
The lift is working but giving a warning. This voltage range is not recommended other
than for emergency operation.
The lift is working but the voltage range outside the area marked with a heart is only
recommended for operation for shorter periods of time.
The lift works within the voltage range for the best functionality and service life.
0V
36V
0-7V
8-15V
16-36V
12V
10-14V
0V
36V
0-16V
18-30V
32-36V
24V
20-28V