Everest CORE - Product Manual |
Application Guide
INGENIA | 08/01/2019
39
Schematic
Signals description
Signal
Description
BAKE+
Positive terminal of the brake solenoid
BAKE-
Negative terminal of the brake solenoid
PWM_BRAKE
To be connected to pin 42 of Everest CORE Interface connector
GND_D
Logic supply reference voltage. To be connected to pins 39 or 46 of Everest CORE Interface
connector
GND_P
Power supply reference voltage. To be connected to power pin 2 of P1 in Everest CORE
Design Notes
•
Signal BRAKE+ is to be connected to the positive terminal of the brake solenoid, and at the same time to the
positive terminal of the brake power supply. The negative terminal of the brake power supply must be tied
to GND_P.
• If the DC bus is supplied at 24 V or less, the signal BRAKE+ could be tied to SUP_PROTECTED or externally
connected to the positive terminal of the power supply.
•
The net-tie between the GND_D and the GND_P allows sharing the same reference voltage while controlling
the return path in the layout phase.
•
As a solenoid is a highly inductive load, the wheeling diode D1 provides a discharge path for the energy
stored in it.
In case of a low voltage DC bus
Everest CORE DC bus can be driven from a very low voltage power supply, but still a 24 V brake might be
required. In the event that the
DC bus is lower than the brake driving voltage, the signal BRAKE+ must
not be tied to the DC bus
(either SUP_PROTECTED, POW_SUP or power pin 1 of P1 in Everest CORE). If
doing so, diode D1 would short the DC bus to a greater voltage, allowing a great current through it, and
most probably burning it.
