HIGHLANDER II VERTICAL PLATFORM LIFTS:
Install Manual
17FEB2021 | 630-00113 REV C
36
TROUBLESHOOTING
HIGHLANDER II: SECTION 6
Figure 6-7 (wires not shown)
BATTERIES
Each battery in a VPL is a 12V Sealed Lead Acid
battery. VPL400 and VPL600 get two (2) batteries
wired in series to provide 24V to the Inverter.
VPL800 to VPL1400 get four (4) batteries where
two (2) pairs of the batteries are wired in series and
the pairs are wired together in parallel to get the
24V to the inverter. Properly maintained batteries
are sized to be able to provide user with at least 5
round trips at full load while on battery power. In
order to preserve battery life during power outages
the lift will shut off the inverter and go into a low
power standby mode when the lift is not being used.
The unit will automatically "wake up" and check
the batteries every 8-hours. Hitting any button
or activating a gate will "wake-up" the lift after a
5-second delay.
60A FUSE
Between the positive leads of the batteries and
the inverter is an 60A fuse. This fuse protects the
batteries and is very unlikely to independently blow
unless there is a short during install or service.
BATTERY CHARGER
The battery charger is 24V, 2A with 4-stage charge
profiles to maximize battery life. After a power
outage it may take 12 to 18-hours to return to a full
charge.
BATTERY CHECK RELAY
Since we cannot check battery voltage while the
battery is charging, we have a Battery Check
Relay that switches between charging and voltage
monitoring. The battery voltage is monitored
continuously any time while on battery power and
checked every 4-hours while on AC power. A failed
Battery Check Relay would result in a Very Low
Battery warning.
INVERTER
The inverter is 1500W and converts the 24V from
the batteries into a 120 Volt modified sine wave
to power the lift. The inverter is controlled by the
control board via the Inverter Remote Control Cable.
There are safeties built into the inverter, however
the control board monitors the input and output of
the inverter and will go into a fault state to prevent
the inverter from tripping. A failed inverter will
appear to switch over to battery power but not
provide power to drive the motor. The periodic
operational checks should include a check of the
battery backup system. To do this the breaker must
be interrupted at the two (2) pole fused disconnect,
the tower junction box or the control tray screw
terminal.
FLOAT SWITCH
If a float switch is present and the float switch is
triggered for more than a minute, you will see a float
switch indication (flashing #2 amber).
After 25-trips or 2-weeks in time, the unit will go into
"out of service" mode which will not allow it to run
(flashing #2 red). This is to protect the safety of the
Battery
Charger
Battery
Check Relay
60A fuse
2X Batteries
Inverter
