Hyd-Mech H-40, Operation And Maintenance Manual

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H40
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SECTION 4, ELECTRICAL SYSTEM
GENERAL INFORMATION
All electrical work perfomed on this machine should be done only by a qualified technician.
This section contains photo's of the electrical panel layouts, electrical components lists, schematic and
wiring diagrams. Any additional information can be obtained from Hyd-Mech Service.
The power connection to the machine is made to the L1, L2 and L3 and ground terminals of the junction block
located in the high voltage panel. As supplied, the machine is set to run on 480 volts, three phase, as indicated
on the serial plate and the voltage label.
In order to use the machine on a different supply voltage, a transformer with an output of 480V and rated for
64 amps must be connected to the main power line.
At initial hook-up it is important to check that the phase order is correct. This is indicated by the hydraulic
pressure gauge registering an
IMMEDIATE pressure rise and the blade drive wheel revolving in a counter
clockwise direction. If thses are not observed,
SHUT THE MACHINE DOWN IMMEDIATELY !
and reverse any two of the phase lines.
NOTE: 1)The PLC is equipped with a lithium battery to keep the program stored while the power is shut
down. The battery will need to be replaced every 3 to 5 years, depending on usage. A visual warning will be
displayed on the interface when the battery drains to a certain level. Battaries can be purchased through your
Hyd-Mech Distibutor.
2) If the machine is equiped with an inverter, do not turn disconnect on for 3 three minutes after
disconnect has been shut off. Cycling power sooner than 3 minutes will result in damage to the Variable
Frequency Drive.
3) All of the machines equipped with a Mitsubushi PLC have a snap on Ferrite core on the interface
cable. This is placed near the interface in order to reduce "noise".