MULTILIFT ULTIMA S, Installation Instructions Manual

Page: 38 / 62

Installation
Ultima Hooklift 01/2020
38
5. PLC Control System
5.1 Installation of the control system
NOTE! In case of Ultima Flex or Pro , check the possibility to utilize the truck interface
cables for the connections of the cabin controller to reduce installation time.
Instructions for Scania and Volvo can be found in Multilift Product Site.
The PLC control system is designed to be connected to 24V electrical system. In case of con-
nection to 12V electrical system a voltage converter 12-24VDC (min. 10A) must be used.
Most of the cables and wires are installed at factory, except the power feed (L=36 ft), the CAN
extension cable (L=33 ft) and the adapter cable to control unit (L=3.2 ft). The power cord wires
are marked with and - labels. The wires are also marked with numbers: 1 = +24V and
2 = GND (-). Always make sure that the wires are installed correct way. Connecting wrong may
cause to short circuit in I/O module.
Connect the power feed of the hooklift to a connection bridge for accessories in the truck. Pow-
er feed must be protected with 10A fuse. Recommendation is to take the power after ignition
key (KL15). Check that the power feed is stable and stays on also when PTO is not on. The
warning lights of hooklift must stay on while driving. Check the truck manufacturer’s instruc-
tions on connecting the accessories. Use existing holes (Ø 0.3”) in the cabin to draw the cable.
It is not recommended to take the power directly from the battery because it might run empty in
longer period.
The PLC control system is protected against under and over voltage. Multilift control unit will
prompt an error message if the voltage lowers below 18 V or gets over 30 V. Over and under
voltage errors are logged and can be examined with the service tool’s diagnostics tool.
Any voltage below 15V or over 33V activates a
safety circuit in I/O module and the hooklift will be
inoperative. After the power returns to normal lev-
el, the safety circuit will release automatically. In
some trucks the voltage may drop under 16V
while cranking the engine and in some trucks may
have charging voltage over 30V. Always check
these conditions from truck manufacturer.
Before welding anything in the hooklift or the
truck, disconnect all connectors from I/O module.
Check the truck manufacturer’s instruction for
welding job.
Any self-made electrical connections to the ca-
bles, wires and solenoids are strictly forbidden be-
cause they might interfere the CAN signals. Most
of the additional functions have standby con-
nectors in the wiring harnesses. Consult
manufacturer for additional information.
36 ft
(1)+ / -(2)
33 ft Connected at factory
1m adapter cable
Truck interface CAN cable