Electrical Installation
AGD301 Product Manual Rev.2.0
Page 19
3.3.3 Safe Operating Area
While each specific maximal rating can be safely used, the product cannot support certain
combinations of these maximal ratings. For example, the product will not enable operation under the
following
combined
maximal ratings usage continuously over long-term period:
Three axes at 5.6A
rms
continuous each, at 90% PWM duty cycle
1.5A external load on the 5V supply
Product mounted horizontally and not attached to a suitable base plate
50
°
C ambient temperature.
Permitted
combinations, as well as forbidden combinations, cannot be specifically provided since
they are a function of multiple conditions, such as continuous current of all three axes, bus voltage,
PWM duty cycle of all three motors, 5V consumption, I/O's high current usage, base plate size,
product mounting orientation, and ambient temperature.
The SOA of the product is defined as any combination of operational conditions (each within the
absolute maximal ratings defined in the Technical Specifications) and assembly options that lead to
internal product temperature below 75°C.
The product includes a built-in temperature sensor. Its internal temperature is reported via the
status parameter BoardTemp. When BoardTemp reaches 75°C, all motors will be disabled and
ererors will be reported. A motor-enable request will create an error if BoardTemp is higher than
75°C.
The following figures are examples of safe operating cases. The SOA charts assume 90% duty cycle on
PWM output continuously; that is, motors are moving at the maximum speed allowed by the bus
voltage.
Attention
Each of the power/voltage/current absolute maximal ratings is valid over the overall
operating temperature range, subject to the safe operating area (SOA).
Attention
Operating (or storing) the product contrary to the defined absolute maximal ratings is
not allowed and will damage the product.
