AZ
2
USER MANUAL
ST.TEC.003.EN Rev. 2.1
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1.4.
Wiring
!
WARNING
Do not connect in parallel the two power outputs to increase the total current
that can be imposed on a single motor. This can result in electrical shock or fire.
Do not change encoders’ connections after the successful execution of the first
homing. Any change in one of the two encoders’ connections may lead to
instability in the operation that may cause accidents or injury.
First shut off input power and wait at least 5 minutes before touching terminals
and wires on equipment (MCCB) that is connected to drive power side. Touching
the terminals and wires before that time could result in electric shock.
!
Use a protection diode on the positive terminal of the drive power supply to
avoid damages on the supply circuitry in case of regenerative braking of the
motor. The use of the diode is required in case of parallel connection of more
than one drive or connection of other loads in parallel with the drive.
A qualified expert must do electrical construction work. Connection of input
power by someone who does not have that expert knowledge may result in fire
or electric shock.
Connect output terminals (motor side) correctly. If the polarity is incorrect, the
motor(s) will operate in reverse and that may result in injury.
Do the wiring after installation. If wiring is done prior to installation, that may
result in injury or electric shock.
The following steps must be performed before wiring:
1.
turn off all input power;
2.
wait at least 5 minutes and check to make sure that the on state LED1 is no
longer lit;
3.
use a tester that can measure DC voltage (60V DC or more), and check to
make sure that the voltage to the DC main circuits (V and 0V) is 45V
or less. If these steps are not properly performed, the wiring will cause
electric shock.
Tighten the screws on the terminal block to specified torque. If the screws are
not tightened to the specified torque, it may lead to fire.
Check to make sure that the input power voltage is within the limits of the rated
power voltage written on the nameplate, with the tolerance indicated in the
manual. If the input power voltage do not respect these conditions, this may
result in fire.
!
CAUTION
Do not attach devices with built-in capacitors (such as noise filters or surge
absorbers) to the outputs (motor side) terminals. This could cause a fire.
!
Use a protection diode or set longer decelerating ramps in case of regenerative
braking. Such phenomenons may cause overvoltages and damages to the
external components that constitute the supply circuitry.