Hurco AB6, Руководство по установке

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Installation
Autobend 6 November, 1999 2-89
Advance Relay - Hydraulic Press Brakes
Use a relay to advance the gauge on hydraulic and hydro-mechanical press
brakes. These press brakes use electrical relays and solenoids for
controlling the ram stroke movements.
Typically upon completion of a ram stroke, the press brake activates or
deactivates an up relay. To provide an advance signal, a relay is installed
inside the Large AB6 power cabinet. This relay is connected in parallel
with the press brake’s up relay.
The coil voltage of the advance relay depends on the press brake’s circuit
voltage. Most press brake manufacturers use the universally accepted
values 120VAC and 24VDC. Hurco provides for both voltages. Refer to
the press brake manufacturer’s manuals to determine the correct voltage.
In the event that the press brake’s voltage is different, obtain a relay
designed for the same voltage. For questions about obtaining a correct
relay, call Hurco’s Service Department for advice on how to proceed.
Locate these materials in the Standard AB6 installation kit:
•
two-conductor shielded cable
•
two (2) cord-grip conduit fittings sized to the above cable
•
120VAC or 24VDC relays
Warning
High Voltage! To avoid potential shock hazards,
disconnect power to the power cabinet. Failure to do so
may result in serious injury.
To avoid potential injury turn off the press brake, and
install the Out of Service tag and the lockout device.
Prevent component damage by discharging static
electricity to a ground. Follow the procedures below:
•
Before touching, adjusting, or removing a
printed circuit board (PCB), wear a wrist strap
grounded to the cabinet or enclosure ground
point.
•
If a grounding wrist strap is not available, touch
a grounding point (i.e., the metal cabinet’s
screws) within the enclosure each time before
touching a PCB or electronic assembly.