Connecting
19
6. Connecting the USB cable
Connect the USB cable to the USB communication connector when
using the
MEXE02
.
USB communication connector
USB cable
Specications of USB cable
Specications USB2.0 (full speed)
Cable
Length: 3 m (9.8 ft.) or less
Shape: A to mini-B
Note
•
Connect the driver and PC directly using the USB cable without using a hub or extension cable.
•
In large electrically noisy environments, use the USB cable with a ferrite core or install a ferrite core to the USB cable.
7. Connecting the regeneration resistor
If continuous regeneration operation such as gravitational operation in vertical drive is performed or an inertia load is operated
with the round shaft type motor of 300 W or higher, use the regeneration resistor
RGB100
(sold separately).
Also, if the stopping time gets longer when starting and stopping operations of a large inertia load are repeated frequently, use
the regeneration resistor.
Install the regeneration resistor in a location where heat dissipation capacity equivalent to a level achieved with a heat sink [made
of aluminum, 350×350×3 mm (13.78×13.78×0.12 in.)] is ensured.
7-1 Connection method
Connect the regeneration resistor before turning on the main power.
•
A regenerative current ows through the two thick lead wires (AWG18: 0.75 mm
2
) of the regeneration resistor. Connect them to
the RG1 and RG2 terminals of CN1.
•
The two thin lead wires (AWG22: 0.3 mm
2
) of the regeneration resistor are the thermostat outputs. Connect to the TH input (pin
Nos. 10 and 11) of CN5.
onnect to CN1
unit
AWG22
Connec
TH input
150 °C (302 °F)
[N.C.]
AWG18
R
RG2 terminal
RG1 terminal
Note
•
Be sure to connect the thermostat output to the TH input when using the regeneration resistor.
•
If the regeneration resistor overheats to exceed the permissible temperature, the thermostat output is turned OFF
to generate the “regeneration resistor overheat” alarm. If the “regeneration resistor overheat” alarm is generated,
reconsider the driving condition, ambient temperature and others.
7-2 Regeneration resistor specications
Model
Continuous
regenerative power
Instantaneous
regenerative power
Resistance value Thermostat operating temperature
RGB100
70 W 720 W 150
Ω
Operation: Opens at 150±7 °C (302±13 °F)
Reset: Closes at 145±12 °C (293±22 °F) [normally closed]
About regeneration resistor overheat alarm
The regeneration resistor overheat alarm “ ” may be generated even if the regeneration resistor is not connected.
Once the main power supply is turned on in a state where the pin Nos. 10 and 11 (TH input) of CN5 are short-circuited, the
driver recognizes that the regeneration resistor is connected and changes to the setting that the regeneration resistor is
used. After that, if the power supply is turned on again in a state where nothing is connected to the pin Nos. 10 and 11 of
CN5, the regeneration resistor overheat alarm will be generated.
To cancel the setting to use the regeneration resistor, execute initialization of parameters without connecting anything to
the pin Nos. 10 and 11 of CN5. Then, turning on the main power supply again will reset the alarm.